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data-view-component="true" class="octicon octicon-copilot color-fg-subtle mr-3"> <path d="M23.922 16.992c-.861 1.495-5.859 5.023-11.922 5.023-6.063 0-11.061-3.528-11.922-5.023A.641.641 0 0 1 0 16.736v-2.869a.841.841 0 0 1 .053-.22c.372-.935 1.347-2.292 2.605-2.656.167-.429.414-1.055.644-1.517a10.195 10.195 0 0 1-.052-1.086c0-1.331.282-2.499 1.132-3.368.397-.406.89-.717 1.474-.952 1.399-1.136 3.392-2.093 6.122-2.093 2.731 0 4.767.957 6.166 2.093.584.235 1.077.546 1.474.952.85.869 1.132 2.037 1.132 3.368 0 .368-.014.733-.052 1.086.23.462.477 1.088.644 1.517 1.258.364 2.233 1.721 2.605 2.656a.832.832 0 0 1 .053.22v2.869a.641.641 0 0 1-.078.256ZM12.172 11h-.344a4.323 4.323 0 0 1-.355.508C10.703 12.455 9.555 13 7.965 13c-1.725 0-2.989-.359-3.782-1.259a2.005 2.005 0 0 1-.085-.104L4 11.741v6.585c1.435.779 4.514 2.179 8 2.179 3.486 0 6.565-1.4 8-2.179v-6.585l-.098-.104s-.033.045-.085.104c-.793.9-2.057 1.259-3.782 1.259-1.59 0-2.738-.545-3.508-1.492a4.323 4.323 0 0 1-.355-.508h-.016.016Zm.641-2.935c.136 1.057.403 1.913.878 2.497.442.544 1.134.938 2.344.938 1.573 0 2.292-.337 2.657-.751.384-.435.558-1.15.558-2.361 0-1.14-.243-1.847-.705-2.319-.477-.488-1.319-.862-2.824-1.025-1.487-.161-2.192.138-2.533.529-.269.307-.437.808-.438 1.578v.021c0 .265.021.562.063.893Zm-1.626 0c.042-.331.063-.628.063-.894v-.02c-.001-.77-.169-1.271-.438-1.578-.341-.391-1.046-.69-2.533-.529-1.505.163-2.347.537-2.824 1.025-.462.472-.705 1.179-.705 2.319 0 1.211.175 1.926.558 2.361.365.414 1.084.751 2.657.751 1.21 0 1.902-.394 2.344-.938.475-.584.742-1.44.878-2.497Z"></path><path d="M14.5 14.25a1 1 0 0 1 1 1v2a1 1 0 0 1-2 0v-2a1 1 0 0 1 1-1Zm-5 0a1 1 0 0 1 1 1v2a1 1 0 0 1-2 0v-2a1 1 0 0 1 1-1Z"></path> </svg> <div> <div class="color-fg-default h4">GitHub Copilot</div> Write better code with AI </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" 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2h3.5a.75.75 0 0 1 0 1.5h-3.5a.25.25 0 0 0-.25.25v8.5c0 .138.112.25.25.25h8.5a.25.25 0 0 0 .25-.25v-3.5a.75.75 0 0 1 1.5 0v3.5A1.75 1.75 0 0 1 12.25 14h-8.5A1.75 1.75 0 0 1 2 12.25v-8.5C2 2.784 2.784 2 3.75 2Zm6.854-1h4.146a.25.25 0 0 1 .25.25v4.146a.25.25 0 0 1-.427.177L13.03 4.03 9.28 7.78a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042l3.75-3.75-1.543-1.543A.25.25 0 0 1 10.604 1Z"></path> </svg> </a></li> </ul> </div> </div> </div> </li> <li class="HeaderMenu-item position-relative flex-wrap flex-justify-between flex-items-center d-block d-lg-flex flex-lg-nowrap flex-lg-items-center js-details-container js-header-menu-item"> <button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false"> Solutions <svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon 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0 1 1.06 0Z"></path> </svg> </button> <div class="HeaderMenu-dropdown dropdown-menu rounded m-0 p-0 pt-2 pt-lg-4 position-relative position-lg-absolute left-0 left-lg-n3 pb-2 pb-lg-4 px-lg-4"> <div class="HeaderMenu-column"> <div class="border-bottom pb-3 pb-lg-0 pb-lg-3 mb-3 mb-lg-0 mb-lg-3"> <ul class="list-style-none f5" > <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description" data-analytics-event="{"location":"navbar","action":"github_sponsors","context":"open_source","tag":"link","label":"github_sponsors_link_open_source_navbar"}" href="/sponsors"> <div> <div class="color-fg-default h4">GitHub Sponsors</div> Fund open source developers </div> </a></li> </ul> </div> <div class="border-bottom pb-3 pb-lg-0 pb-lg-3 mb-3 mb-lg-0 mb-lg-3"> <ul class="list-style-none f5" > <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center 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href="https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax" data-view-component="true" class="Link color-fg-accent text-normal ml-2">Search syntax tips</a> <div class="d-flex flex-1"></div> </div> </div> </div> </div> </modal-dialog></div> </div> <div data-action="click:qbsearch-input#retract" class="dark-backdrop position-fixed" hidden data-target="qbsearch-input.darkBackdrop"></div> <div class="color-fg-default"> <dialog-helper> <dialog data-target="qbsearch-input.feedbackDialog" data-action="close:qbsearch-input#handleDialogClose cancel:qbsearch-input#handleDialogClose" id="feedback-dialog" aria-modal="true" aria-labelledby="feedback-dialog-title" aria-describedby="feedback-dialog-description" data-view-component="true" class="Overlay Overlay-whenNarrow Overlay--size-medium Overlay--motion-scaleFade Overlay--disableScroll"> <div data-view-component="true" class="Overlay-header"> <div class="Overlay-headerContentWrap"> <div 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method="post"><input type="hidden" data-csrf="true" name="authenticity_token" value="TncNECWdFPkHV81vXeF+62SiVmsg2qSPW7HKjJZbjKWdM+4vu4jTUGNnYOZ0z204K3suVJbmXUEuZ9AZN2E8KA==" /> <p>We read every piece of feedback, and take your input very seriously.</p> <textarea name="feedback" class="form-control width-full mb-2" style="height: 120px" id="feedback"></textarea> <input name="include_email" id="include_email" aria-label="Include my email address so I can be contacted" class="form-control mr-2" type="checkbox"> <label for="include_email" style="font-weight: normal">Include my email address so I can be contacted</label> </form></div> </scrollable-region> <div data-view-component="true" class="Overlay-footer Overlay-footer--alignEnd"> <button data-close-dialog-id="feedback-dialog" type="button" data-view-component="true" class="btn"> Cancel </button> <button form="code-search-feedback-form" data-action="click:qbsearch-input#submitFeedback" type="submit" data-view-component="true" class="btn-primary btn"> Submit feedback </button> </div> </dialog></dialog-helper> <custom-scopes data-target="qbsearch-input.customScopesManager"> <dialog-helper> <dialog data-target="custom-scopes.customScopesModalDialog" data-action="close:qbsearch-input#handleDialogClose cancel:qbsearch-input#handleDialogClose" id="custom-scopes-dialog" aria-modal="true" aria-labelledby="custom-scopes-dialog-title" aria-describedby="custom-scopes-dialog-description" data-view-component="true" class="Overlay Overlay-whenNarrow Overlay--size-medium Overlay--motion-scaleFade Overlay--disableScroll"> <div data-view-component="true" class="Overlay-header Overlay-header--divided"> <div class="Overlay-headerContentWrap"> <div class="Overlay-titleWrap"> <h1 class="Overlay-title " id="custom-scopes-dialog-title"> Saved searches </h1> <h2 id="custom-scopes-dialog-description" class="Overlay-description">Use saved searches to filter your results more quickly</h2> </div> <div class="Overlay-actionWrap"> 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accept-charset="UTF-8" method="post"><input type="hidden" data-csrf="true" name="authenticity_token" value="SA0V04tCVEM1wHGetgYlEhpFh5CHscRMcdfKrz54VHUkwgSfkh7NUz5f8r3ufqSRCt24vLesp36NN6qhNkntVA==" /> <div data-target="custom-scopes.customScopesModalDialogFlash"></div> <input type="hidden" id="custom_scope_id" name="custom_scope_id" data-target="custom-scopes.customScopesIdField"> <div class="form-group"> <label for="custom_scope_name">Name</label> <auto-check src="/search/custom_scopes/check_name" required only-validate-on-blur="false"> <input type="text" name="custom_scope_name" id="custom_scope_name" data-target="custom-scopes.customScopesNameField" class="form-control" autocomplete="off" placeholder="github-ruby" required maxlength="50"> <input type="hidden" data-csrf="true" value="4hsNOGqPzVDI1cQPprica9iztQlZRaBJSVmvGnyNNSqNp8+Hh4bgvrlgwkjKSlE5kDNTUdpII1HLFyXj8aW4CA==" /> </auto-check> </div> <div class="form-group"> <label for="custom_scope_query">Query</label> <input type="text" name="custom_scope_query" id="custom_scope_query" data-target="custom-scopes.customScopesQueryField" class="form-control" autocomplete="off" placeholder="(repo:mona/a OR repo:mona/b) AND lang:python" required maxlength="500"> </div> <p class="text-small color-fg-muted"> To see all available qualifiers, see our <a class="Link--inTextBlock" href="https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax">documentation</a>. </p> </form> </div> <div data-target="custom-scopes.manageCustomScopesForm"> <div data-target="custom-scopes.list"></div> </div> </div> </scrollable-region> <div data-view-component="true" class="Overlay-footer Overlay-footer--alignEnd Overlay-footer--divided"> <button data-action="click:custom-scopes#customScopesCancel" type="button" data-view-component="true" class="btn"> Cancel </button> <button form="custom-scopes-dialog-form" data-action="click:custom-scopes#customScopesSubmit" 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1-.75.75h-2.5a.75.75 0 0 1 0-1.5h1.75v-2h-8a1 1 0 0 0-.714 1.7.75.75 0 1 1-1.072 1.05A2.495 2.495 0 0 1 2 11.5Zm10.5-1h-8a1 1 0 0 0-1 1v6.708A2.486 2.486 0 0 1 4.5 9h8ZM5 12.25a.25.25 0 0 1 .25-.25h3.5a.25.25 0 0 1 .25.25v3.25a.25.25 0 0 1-.4.2l-1.45-1.087a.249.249 0 0 0-.3 0L5.4 15.7a.25.25 0 0 1-.4-.2Z"></path> </svg> <span class="author flex-self-stretch" itemprop="author"> <a class="url fn" rel="author" data-hovercard-type="organization" data-hovercard-url="/orgs/basecamp/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="/basecamp"> basecamp </a> </span> <span class="mx-1 flex-self-stretch color-fg-muted">/</span> <strong itemprop="name" class="mr-2 flex-self-stretch"> <a data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame" href="/basecamp/bc3-api">bc3-api</a> </strong> <span></span><span class="Label Label--secondary v-align-middle mr-1">Public</span> </div> </div> <div id="repository-details-container" class="flex-shrink-0" data-turbo-replace style="max-width: 70%;"> <ul class="pagehead-actions flex-shrink-0 d-none d-md-inline" style="padding: 2px 0;"> <li> <a href="/login?return_to=%2Fbasecamp%2Fbc3-api" rel="nofollow" id="repository-details-watch-button" data-hydro-click="{"event_type":"authentication.click","payload":{"location_in_page":"notification subscription menu watch","repository_id":null,"auth_type":"LOG_IN","originating_url":"https://github.com/basecamp/bc3-api","user_id":null}}" data-hydro-click-hmac="b6adafa879c9e812a9e7a369e418437f41e7cfe52a30c1bf0bf1312d65d49339" aria-label="You must be signed in to change notification settings" data-view-component="true" class="btn-sm btn"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-bell mr-2"> <path d="M8 16a2 2 0 0 0 1.985-1.75c.017-.137-.097-.25-.235-.25h-3.5c-.138 0-.252.113-.235.25A2 2 0 0 0 8 16ZM3 5a5 5 0 0 1 10 0v2.947c0 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button","repository_id":44994863,"auth_type":"LOG_IN","originating_url":"https://github.com/basecamp/bc3-api","user_id":null}}" data-hydro-click-hmac="8b2320e9a7decf6f0744f2d54b23e351e868fa9a0207c56a1a9734ede999a5c5" data-view-component="true" class="btn-sm btn"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-repo-forked mr-2"> <path d="M5 5.372v.878c0 .414.336.75.75.75h4.5a.75.75 0 0 0 .75-.75v-.878a2.25 2.25 0 1 1 1.5 0v.878a2.25 2.25 0 0 1-2.25 2.25h-1.5v2.128a2.251 2.251 0 1 1-1.5 0V8.5h-1.5A2.25 2.25 0 0 1 3.5 6.25v-.878a2.25 2.25 0 1 1 1.5 0ZM5 3.25a.75.75 0 1 0-1.5 0 .75.75 0 0 0 1.5 0Zm6.75.75a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5Zm-3 8.75a.75.75 0 1 0-1.5 0 .75.75 0 0 0 1.5 0Z"></path> </svg>Fork <span id="repo-network-counter" data-pjax-replace="true" data-turbo-replace="true" title="107" data-view-component="true" class="Counter">107</span> </a> </li> <li> <div data-view-component="true" class="BtnGroup d-flex"> <a href="/login?return_to=%2Fbasecamp%2Fbc3-api" rel="nofollow" data-hydro-click="{"event_type":"authentication.click","payload":{"location_in_page":"star button","repository_id":44994863,"auth_type":"LOG_IN","originating_url":"https://github.com/basecamp/bc3-api","user_id":null}}" data-hydro-click-hmac="75e6fbadc3532fe9e7be1227a1addb771f08623a4027c707111a493a7ea3e139" aria-label="You must be signed in to star a repository" data-view-component="true" class="tooltipped tooltipped-sw btn-sm btn"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-star v-align-text-bottom d-inline-block mr-2"> <path d="M8 .25a.75.75 0 0 1 .673.418l1.882 3.815 4.21.612a.75.75 0 0 1 .416 1.279l-3.046 2.97.719 4.192a.751.751 0 0 1-1.088.791L8 12.347l-3.766 1.98a.75.75 0 0 1-1.088-.79l.72-4.194L.818 6.374a.75.75 0 0 1 .416-1.28l4.21-.611L7.327.668A.75.75 0 0 1 8 .25Zm0 2.445L6.615 5.5a.75.75 0 0 1-.564.41l-3.097.45 2.24 2.184a.75.75 0 0 1 .216.664l-.528 3.084 2.769-1.456a.75.75 0 0 1 .698 0l2.77 1.456-.53-3.084a.75.75 0 0 1 .216-.664l2.24-2.183-3.096-.45a.75.75 0 0 1-.564-.41L8 2.694Z"></path> </svg><span data-view-component="true" class="d-inline"> Star </span> <span id="repo-stars-counter-star" aria-label="535 users starred this repository" data-singular-suffix="user starred this repository" data-plural-suffix="users starred this repository" data-turbo-replace="true" title="535" data-view-component="true" class="Counter js-social-count">535</span> </a></div> </li> </ul> </div> </div> <div id="responsive-meta-container" data-turbo-replace> <div class="d-block d-md-none mb-2 px-3 px-md-4 px-lg-5"> <p class="f4 mb-3 "> API documentation for Basecamp 4 </p> <div class="mb-2 d-flex flex-items-center Link--secondary"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-link flex-shrink-0 mr-2"> <path 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class="octicon octicon-star mr-1"> <path d="M8 .25a.75.75 0 0 1 .673.418l1.882 3.815 4.21.612a.75.75 0 0 1 .416 1.279l-3.046 2.97.719 4.192a.751.751 0 0 1-1.088.791L8 12.347l-3.766 1.98a.75.75 0 0 1-1.088-.79l.72-4.194L.818 6.374a.75.75 0 0 1 .416-1.28l4.21-.611L7.327.668A.75.75 0 0 1 8 .25Zm0 2.445L6.615 5.5a.75.75 0 0 1-.564.41l-3.097.45 2.24 2.184a.75.75 0 0 1 .216.664l-.528 3.084 2.769-1.456a.75.75 0 0 1 .698 0l2.77 1.456-.53-3.084a.75.75 0 0 1 .216-.664l2.24-2.183-3.096-.45a.75.75 0 0 1-.564-.41L8 2.694Z"></path> </svg> <span class="text-bold">535</span> stars </a> <a class="Link--secondary no-underline mr-3" href="/basecamp/bc3-api/forks"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-repo-forked mr-1"> <path d="M5 5.372v.878c0 .414.336.75.75.75h4.5a.75.75 0 0 0 .75-.75v-.878a2.25 2.25 0 1 1 1.5 0v.878a2.25 2.25 0 0 1-2.25 2.25h-1.5v2.128a2.251 2.251 0 1 1-1.5 0V8.5h-1.5A2.25 2.25 0 0 1 3.5 6.25v-.878a2.25 2.25 0 1 1 1.5 0ZM5 3.25a.75.75 0 1 0-1.5 0 .75.75 0 0 0 1.5 0Zm6.75.75a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5Zm-3 8.75a.75.75 0 1 0-1.5 0 .75.75 0 0 0 1.5 0Z"></path> </svg> <span class="text-bold">107</span> forks </a> <a class="Link--secondary no-underline mr-3 d-inline-block" href="/basecamp/bc3-api/branches"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-git-branch mr-1"> <path d="M9.5 3.25a2.25 2.25 0 1 1 3 2.122V6A2.5 2.5 0 0 1 10 8.5H6a1 1 0 0 0-1 1v1.128a2.251 2.251 0 1 1-1.5 0V5.372a2.25 2.25 0 1 1 1.5 0v1.836A2.493 2.493 0 0 1 6 7h4a1 1 0 0 0 1-1v-.628A2.25 2.25 0 0 1 9.5 3.25Zm-6 0a.75.75 0 1 0 1.5 0 .75.75 0 0 0-1.5 0Zm8.25-.75a.75.75 0 1 0 0 1.5.75.75 0 0 0 0-1.5ZM4.25 12a.75.75 0 1 0 0 1.5.75.75 0 0 0 0-1.5Z"></path> </svg> <span>Branches</span> </a> <a class="Link--secondary no-underline d-inline-block" href="/basecamp/bc3-api/tags"> <svg aria-hidden="true" height="16" 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data-target="react-partial.embeddedData">{"props":{"initialPayload":{"allShortcutsEnabled":false,"path":"/","repo":{"id":44994863,"defaultBranch":"master","name":"bc3-api","ownerLogin":"basecamp","currentUserCanPush":false,"isFork":false,"isEmpty":false,"createdAt":"2015-10-26T20:21:03.000Z","ownerAvatar":"https://avatars.githubusercontent.com/u/13131?v=4","public":true,"private":false,"isOrgOwned":true},"currentUser":null,"refInfo":{"name":"master","listCacheKey":"v0:1696261731.0","canEdit":false,"refType":"branch","currentOid":"f2410b867add555794027a11d9a997d6d47c337c"},"tree":{"items":[{"name":"sections","path":"sections","contentType":"directory"},{"name":"CONDUCT.md","path":"CONDUCT.md","contentType":"file"},{"name":"README.md","path":"README.md","contentType":"file"}],"templateDirectorySuggestionUrl":null,"readme":null,"totalCount":3,"showBranchInfobar":false},"fileTree":null,"fileTreeProcessingTime":null,"foldersToFetch":[],"treeExpanded":false,"symbolsExpanded":false,"isOverview":true,"overview":{"banners":{"shouldRecommendReadme":false,"isPersonalRepo":false,"showUseActionBanner":false,"actionSlug":null,"actionId":null,"showProtectBranchBanner":false,"publishBannersInfo":{"dismissActionNoticePath":"/settings/dismiss-notice/publish_action_from_repo","releasePath":"/basecamp/bc3-api/releases/new?marketplace=true","showPublishActionBanner":false},"interactionLimitBanner":null,"showInvitationBanner":false,"inviterName":null,"actionsMigrationBannerInfo":{"releaseTags":[],"showImmutableActionsMigrationBanner":false,"initialMigrationStatus":null}},"codeButton":{"contactPath":"/contact","isEnterprise":false,"local":{"protocolInfo":{"httpAvailable":true,"sshAvailable":null,"httpUrl":"https://github.com/basecamp/bc3-api.git","showCloneWarning":null,"sshUrl":null,"sshCertificatesRequired":null,"sshCertificatesAvailable":null,"ghCliUrl":"gh 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API\u003c/h1\u003e\u003ca id=\"user-content-the-basecamp-4-api\" class=\"anchor\" aria-label=\"Permalink: The Basecamp 4 API\" href=\"#the-basecamp-4-api\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eWelcome to the Basecamp 4 API! If you're looking to integrate your application with Basecamp 4 or create your own application in concert with data inside of Basecamp 4, you're in the right place. We're happy to have you!\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eCompatibility with previous Basecamp APIs\u003c/h2\u003e\u003ca id=\"user-content-compatibility-with-previous-basecamp-apis\" class=\"anchor\" aria-label=\"Permalink: Compatibility with previous Basecamp APIs\" href=\"#compatibility-with-previous-basecamp-apis\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe Basecamp 4 API is not compatible with the \u003ca href=\"https://github.com/basecamp/basecamp-classic-api\"\u003eBasecamp Classic API\u003c/a\u003e or the \u003ca href=\"https://github.com/basecamp/bcx-api\"\u003eBasecamp 2 API\u003c/a\u003e. All integrations will start fresh with the new API. The core ingredients are the same, though: Basecamp 4 is a REST-style API that uses JSON for serialization and OAuth 2.0 for authentication.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eWhat's different?\u003c/h2\u003e\u003ca id=\"user-content-whats-different\" class=\"anchor\" aria-label=\"Permalink: What's different?\" href=\"#whats-different\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIf you've used a previous version of the Basecamp API, you need to adapt your integration code. Here are some notable changes for the Basecamp 4 API:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eWe require OAuth 2.0 for \u003ca href=\"#authentication\"\u003eauthentication\u003c/a\u003e—no more Basic authentication\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#pagination\"\u003ePagination\u003c/a\u003e is performed via the \u003ccode\u003eLink\u003c/code\u003e and \u003ccode\u003eX-Total-Count\u003c/code\u003e headers\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eMaking a request\u003c/h2\u003e\u003ca id=\"user-content-making-a-request\" class=\"anchor\" aria-label=\"Permalink: Making a request\" href=\"#making-a-request\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eAll URLs start with \u003cstrong\u003e\u003ccode\u003ehttps://3.basecampapi.com/999999999/\u003c/code\u003e\u003c/strong\u003e. URLs are HTTPS only. The path is prefixed with the account ID, but no \u003ccode\u003e/api/v1\u003c/code\u003e API prefix. Also, note the different domain!\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTo make a request for all the projects on your account, append the \u003ccode\u003eprojects\u003c/code\u003e index path to the base URL to form something like \u003ccode\u003ehttps://3.basecampapi.com/999999999/projects.json\u003c/code\u003e. In cURL, it looks like this:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"curl -H \u0026quot;Authorization: Bearer $ACCESS_TOKEN\u0026quot; -A 'MyApp (yourname@example.com)' https://3.basecampapi.com/999999999/projects.json\"\u003e\u003cpre\u003ecurl -H \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003eAuthorization: Bearer \u003cspan class=\"pl-smi\"\u003e$ACCESS_TOKEN\u003c/span\u003e\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003e\u003c/span\u003e -A \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e'\u003c/span\u003eMyApp (yourname@example.com)\u003cspan class=\"pl-pds\"\u003e'\u003c/span\u003e\u003c/span\u003e https://3.basecampapi.com/999999999/projects.json\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTo create something, it's the same idea, but you also have to include the \u003ccode\u003eContent-Type\u003c/code\u003e header and the JSON data:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"curl -H \u0026quot;Authorization: Bearer $ACCESS_TOKEN\u0026quot; \\\n -H 'Content-Type: application/json' \\\n -A 'User-Agent: MyApp (yourname@example.com)' \\\n -d '{ \u0026quot;name\u0026quot;: \u0026quot;My new project!\u0026quot; }' \\\n https://3.basecampapi.com/999999999/projects.json\"\u003e\u003cpre\u003ecurl -H \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003eAuthorization: Bearer \u003cspan class=\"pl-smi\"\u003e$ACCESS_TOKEN\u003c/span\u003e\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003e\u003c/span\u003e \\\n -H \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e'\u003c/span\u003eContent-Type: application/json\u003cspan class=\"pl-pds\"\u003e'\u003c/span\u003e\u003c/span\u003e \\\n -A \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e'\u003c/span\u003eUser-Agent: MyApp (yourname@example.com)\u003cspan class=\"pl-pds\"\u003e'\u003c/span\u003e\u003c/span\u003e \\\n -d \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e'\u003c/span\u003e{ \"name\": \"My new project!\" }\u003cspan class=\"pl-pds\"\u003e'\u003c/span\u003e\u003c/span\u003e \\\n https://3.basecampapi.com/999999999/projects.json\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThroughout the Basecamp 4 API docs, we include \"Copy as cURL\" examples. To try the examples in your shell, copy your OAuth 2.0 access token into your clipboard and run:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"export ACCESS_TOKEN=PASTE_ACCESS_TOKEN_HERE\nexport ACCOUNT_ID=999999999\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eexport\u003c/span\u003e ACCESS_TOKEN=PASTE_ACCESS_TOKEN_HERE\n\u003cspan class=\"pl-k\"\u003eexport\u003c/span\u003e ACCOUNT_ID=999999999\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThen you should be able to copy/paste any example from the docs. After pasting a cURL example, you can pipe it to a JSON pretty printer to make it more readable. Try \u003ca href=\"https://jmhodges.github.io/jsonpp/\" rel=\"nofollow\"\u003ejsonpp\u003c/a\u003e or \u003ccode\u003ejson_pp\u003c/code\u003e on OSX:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"curl -s -H \u0026quot;Authorization: Bearer $ACCESS_TOKEN\u0026quot; https://3.basecampapi.com/999999999/projects.json | json_pp\"\u003e\u003cpre\u003ecurl -s -H \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003eAuthorization: Bearer \u003cspan class=\"pl-smi\"\u003e$ACCESS_TOKEN\u003c/span\u003e\u003cspan class=\"pl-pds\"\u003e\"\u003c/span\u003e\u003c/span\u003e https://3.basecampapi.com/999999999/projects.json \u003cspan class=\"pl-k\"\u003e|\u003c/span\u003e json_pp\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eAuthentication\u003c/h2\u003e\u003ca id=\"user-content-authentication\" class=\"anchor\" aria-label=\"Permalink: Authentication\" href=\"#authentication\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eAs mentioned above, to authenticate you must use OAuth 2.0. OAuth 2.0 allows users to authorize your application to use Basecamp on their behalf without having to copy/paste API tokens or touch sensitive login information.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eRead the \u003ca href=\"https://github.com/basecamp/api/blob/master/sections/authentication.md\"\u003eauthentication guide\u003c/a\u003e to get started.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eIdentifying your application\u003c/h2\u003e\u003ca id=\"user-content-identifying-your-application\" class=\"anchor\" aria-label=\"Permalink: Identifying your application\" href=\"#identifying-your-application\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYou must include a \u003ccode\u003eUser-Agent\u003c/code\u003e header with \u003cstrong\u003eboth\u003c/strong\u003e:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eThe name of your application\u003c/li\u003e\n\u003cli\u003eA link to your application or your email address\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eWe use this information to get in touch if you're doing something wrong (so we can warn you before you're blacklisted) or something awesome (so we can congratulate you). Here are examples of acceptable \u003ccode\u003eUser-Agent\u003c/code\u003e headers:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eUser-Agent: Freshbooks (http://freshbooks.com/contact.php)\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eUser-Agent: Fabian's Ingenious Integration (fabian@example.com)\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eIf you don't include a \u003ccode\u003eUser-Agent\u003c/code\u003e header, you'll get a \u003ccode\u003e400 Bad Request\u003c/code\u003e response.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eJSON only\u003c/h2\u003e\u003ca id=\"user-content-json-only\" class=\"anchor\" aria-label=\"Permalink: JSON only\" href=\"#json-only\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eWe use JSON for all API data. The style is no root element and snake_case for object keys. This means that you have to send the \u003ccode\u003eContent-Type\u003c/code\u003e header \u003ccode\u003eContent-Type: application/json; charset=utf-8\u003c/code\u003e when you're POSTing or PUTing data into Basecamp. All API URLs end in \u003ccode\u003e.json\u003c/code\u003e to indicate that they return JSON. Alternatively you can send \u003ccode\u003eAccept: application/json\u003c/code\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eYou'll receive a \u003ccode\u003e415 Unsupported Media Type\u003c/code\u003e response code if you don't include the \u003ccode\u003eContent-Type\u003c/code\u003e header.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003ePagination\u003c/h2\u003e\u003ca id=\"user-content-pagination\" class=\"anchor\" aria-label=\"Permalink: Pagination\" href=\"#pagination\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eMost collection APIs paginate their results. The number of requests that'll appear on each page is variable. In most cases, we use a \u003ca href=\"https://github.com/basecamp/geared_pagination\"\u003egeared pagination ratio\u003c/a\u003e with 15 results on page 1, 30 on page 2, 50 on 3, and then 100 on 4 and above. The Basecamp 4 API follows the \u003ca href=\"https://tools.ietf.org/html/rfc5988\" rel=\"nofollow\"\u003eRFC5988 convention\u003c/a\u003e of using the \u003ccode\u003eLink\u003c/code\u003e header to provide URLs for the \u003ccode\u003enext\u003c/code\u003e page. Follow this convention to retrieve the next page of data—please don't build the pagination URLs yourself!\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eHere's an example response header from requesting the third page of \u003ca href=\"/basecamp/bc3-api/blob/master/sections/messages.md#messages\"\u003emessages\u003c/a\u003e:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"Link: \u0026lt;https://3.basecampapi.com/999999999/buckets/2085958496/messages.json?page=4\u0026gt;; rel=\u0026quot;next\u0026quot;\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003eLink: \u0026lt;https://3.basecampapi.com/999999999/buckets/2085958496/messages.json?page=4\u0026gt;; rel=\"next\"\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIf the \u003ccode\u003eLink\u003c/code\u003e header is blank, that's the last page. The Basecamp 4 API also provides the \u003ccode\u003eX-Total-Count\u003c/code\u003e header, which displays the total number of resources in the collection you are fetching.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eUsing HTTP caching\u003c/h2\u003e\u003ca id=\"user-content-using-http-caching\" class=\"anchor\" aria-label=\"Permalink: Using HTTP caching\" href=\"#using-http-caching\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYou must use HTTP freshness headers to speed up your application and lighten the load on our servers. Most API responses will include an \u003ccode\u003eETag\u003c/code\u003e or \u003ccode\u003eLast-Modified\u003c/code\u003e header. When you first request a resource, store these values. On subsequent requests, submit them back to us as \u003ccode\u003eIf-None-Match\u003c/code\u003e and \u003ccode\u003eIf-Modified-Since\u003c/code\u003e, respectively. If the resource hasn't changed since your last request, you'll get a \u003ccode\u003e304 Not Modified\u003c/code\u003e response with no body, saving you the time and bandwidth of sending something you already have.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eHandling errors\u003c/h2\u003e\u003ca id=\"user-content-handling-errors\" class=\"anchor\" aria-label=\"Permalink: Handling errors\" href=\"#handling-errors\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eAPI clients must expect and gracefully handle transient server errors and rate limits. We recommend baking graceful 5xx and 429 retries into your integration from the beginning so errors are handled automatically.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eRate limiting (429 Too Many Requests)\u003c/h3\u003e\u003ca id=\"user-content-rate-limiting-429-too-many-requests\" class=\"anchor\" aria-label=\"Permalink: Rate limiting (429 Too Many Requests)\" href=\"#rate-limiting-429-too-many-requests\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eWe return a \u003ca href=\"http://tools.ietf.org/html/draft-nottingham-http-new-status-02#section-4\" rel=\"nofollow\"\u003e429 Too Many Requests\u003c/a\u003e response when you've exceeded a rate limit. Consult the \u003ccode\u003eRetry-After\u003c/code\u003e response header to determine how long to wait (in seconds) before retrying the request.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003ePlan ahead to gracefully handle the failure modes that API backpressure will exert on your integration. Multiple rate limits are in effect, e.g. for GET vs POST requests and per-second/hour/day limits, and they're adjusted dynamically, so responding to them dynamically is essential, particularly at high traffic levels.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eFor a sense of scale, the first rate limit you'll commonly encounter is currently 50 requests per 10 second period per IP address.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ca href=\"https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#5xx_Server_errors\" rel=\"nofollow\"\u003e5xx server errors\u003c/a\u003e\u003c/h3\u003e\u003ca id=\"user-content-5xx-server-errors\" class=\"anchor\" aria-label=\"Permalink: 5xx server errors\" href=\"#5xx-server-errors\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIf Basecamp is having trouble, you will get a response with a 5xx status code indicating a server error. 500 (Internal Server Error), 502 (Bad Gateway), 503 (Service Unavailable), and 504 (Gateway Timeout) may be retried with \u003ca href=\"https://en.wikipedia.org/wiki/Exponential_backoff\" rel=\"nofollow\"\u003eexponential backoff\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e404 Not Found\u003c/h3\u003e\u003ca id=\"user-content-404-not-found\" class=\"anchor\" aria-label=\"Permalink: 404 Not Found\" href=\"#404-not-found\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eAPI requests may 404 due to deleted content, an inactive account, missing user permissions, etc. Detect these conditions to give your users a clear explanation about why they can't connect to Basecamp. Do not automatically retry these requests.\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eInactive account. 404 Not Found response with a \u003ccode\u003eReason: Account Inactive\u003c/code\u003e header. Due to an expired trial or account suspension. All API requests to an inactive account will fail, so we recommend detecting and disabling the account in your integration as well.\u003c/li\u003e\n\u003cli\u003eInaccessible items. 404 Not Found response. Due to a deleted item or insufficient permissions.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eRich text content\u003c/h2\u003e\u003ca id=\"user-content-rich-text-content\" class=\"anchor\" aria-label=\"Permalink: Rich text content\" href=\"#rich-text-content\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eMany resources, including messages, documents, and comments, represent their content as rich text in HTML. Rich text content may contain lists, block quotes, simple formatting, and inline attachments such as mentions, images, and files.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eSee the \u003ca href=\"/basecamp/bc3-api/blob/master/sections/rich_text.md\"\u003eRich text\u003c/a\u003e section for more information about working with HTML and attachments in rich text content.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eAPI endpoints\u003c/h2\u003e\u003ca id=\"user-content-api-endpoints\" class=\"anchor\" aria-label=\"Permalink: API endpoints\" href=\"#api-endpoints\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/attachments.md#attachments\"\u003eAttachments\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/campfires.md#campfires\"\u003eCampfires\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/card_table_cards.md#card-table-cards\"\u003eCard table cards\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/card_table_columns.md#card-table-columns\"\u003eCard table columns\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/card_table_steps.md#card-table-steps\"\u003eCard table steps\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/card_tables.md#card-tables\"\u003eCard tables\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/chatbots.md#chatbots\"\u003eChatbots\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/client_approvals.md#client-approvals\"\u003eClient approvals\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/client_correspondences.md#client-correspondences\"\u003eClient correspondences\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/client_replies.md#client-replies\"\u003eClient replies\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/client_visibility.md#client-visibility\"\u003eClient visibility\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/comments.md#comments\"\u003eComments\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/documents.md#documents\"\u003eDocuments\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/events.md#events\"\u003eEvents\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/forwards.md#forwards\"\u003eForwards\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/inbox_replies.md#inbox-replies\"\u003eInbox replies\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/inboxes.md#inboxes\"\u003eInboxes\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/lineup_markers.md#lineup-markers\"\u003eLineup Markers\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/message_boards.md#message-boards\"\u003eMessage Boards\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/message_types.md#message-types\"\u003eMessage Types\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/messages.md#messages\"\u003eMessages\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/people.md#people\"\u003ePeople\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/projects.md#projects\"\u003eProjects\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/question_answers.md#question-answers\"\u003eQuestion answers\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/questionnaires.md#questionnaires\"\u003eQuestionnaires\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/questions.md#questions\"\u003eQuestions\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/recordings.md#recordings\"\u003eRecordings\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/schedule_entries.md#schedule-entries\"\u003eSchedule entries\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/schedules.md#schedules\"\u003eSchedules\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/subscriptions.md#subscriptions\"\u003eSubscriptions\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/templates.md#templates\"\u003eTemplates\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/todolist_groups.md#to-do-list-groups\"\u003eTo-do list groups\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/todolists.md#to-do-lists\"\u003eTo-do lists\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/todosets.md#to-do-sets\"\u003eTo-do sets\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/todos.md#to-dos\"\u003eTo-dos\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/uploads.md#uploads\"\u003eUploads\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/vaults.md#vaults\"\u003eVaults\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/sections/webhooks.md#webhooks\"\u003eWebhooks\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eListing your application\u003c/h2\u003e\u003ca id=\"user-content-listing-your-application\" class=\"anchor\" aria-label=\"Permalink: Listing your application\" href=\"#listing-your-application\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTo add your application to our public list of Basecamp 4 integrations, go to \u003ca href=\"https://github.com/basecamp/bc3-integrations\"\u003ehttps://github.com/basecamp/bc3-integrations\u003c/a\u003e and open a pull request.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eGetting Help\u003c/h2\u003e\u003ca id=\"user-content-getting-help\" class=\"anchor\" aria-label=\"Permalink: Getting Help\" href=\"#getting-help\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIf you have a question about the API, please \u003ca href=\"https://basecamp.com/support\" rel=\"nofollow\"\u003eopen a support ticket\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eConduct\u003c/h2\u003e\u003ca id=\"user-content-conduct\" class=\"anchor\" aria-label=\"Permalink: Conduct\" href=\"#conduct\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003ePlease note that this project is released with a \u003ca href=\"https://github.com/basecamp/bc3-api/blob/master/CONDUCT.md\"\u003eContributor Code of Conduct\u003c/a\u003e. By participating in discussions about the Basecamp 4 API, you agree to abide by these terms.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLicense\u003c/h2\u003e\u003ca id=\"user-content-license\" class=\"anchor\" aria-label=\"Permalink: License\" href=\"#license\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThese API docs are licensed under \u003ca href=\"http://creativecommons.org/licenses/by-sa/4.0/\" rel=\"nofollow\"\u003eCreative Commons (CC BY-SA 4.0)\u003c/a\u003e. Please share, remix, and distribute as you see fit.\u003c/p\u003e\n\u003c/article\u003e","loaded":true,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":[{"level":1,"text":"The Basecamp 4 API","anchor":"the-basecamp-4-api","htmlText":"The Basecamp 4 API"},{"level":2,"text":"Compatibility with previous Basecamp APIs","anchor":"compatibility-with-previous-basecamp-apis","htmlText":"Compatibility with previous Basecamp APIs"},{"level":2,"text":"What's different?","anchor":"whats-different","htmlText":"What's different?"},{"level":2,"text":"Making a request","anchor":"making-a-request","htmlText":"Making a request"},{"level":2,"text":"Authentication","anchor":"authentication","htmlText":"Authentication"},{"level":2,"text":"Identifying your application","anchor":"identifying-your-application","htmlText":"Identifying your application"},{"level":2,"text":"JSON only","anchor":"json-only","htmlText":"JSON only"},{"level":2,"text":"Pagination","anchor":"pagination","htmlText":"Pagination"},{"level":2,"text":"Using HTTP caching","anchor":"using-http-caching","htmlText":"Using HTTP caching"},{"level":2,"text":"Handling errors","anchor":"handling-errors","htmlText":"Handling errors"},{"level":3,"text":"Rate limiting (429 Too Many Requests)","anchor":"rate-limiting-429-too-many-requests","htmlText":"Rate limiting (429 Too Many Requests)"},{"level":3,"text":"5xx server errors","anchor":"5xx-server-errors","htmlText":"5xx server errors"},{"level":3,"text":"404 Not Found","anchor":"404-not-found","htmlText":"404 Not Found"},{"level":2,"text":"Rich text content","anchor":"rich-text-content","htmlText":"Rich text content"},{"level":2,"text":"API endpoints","anchor":"api-endpoints","htmlText":"API endpoints"},{"level":2,"text":"Listing your application","anchor":"listing-your-application","htmlText":"Listing your application"},{"level":2,"text":"Getting 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data-hpc="true"><article class="markdown-body entry-content container-lg" itemprop="text"><div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">The Basecamp 4 API</h1><a id="user-content-the-basecamp-4-api" class="anchor" aria-label="Permalink: The Basecamp 4 API" href="#the-basecamp-4-api"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Welcome to the Basecamp 4 API! If you're looking to integrate your application with Basecamp 4 or create your own application in concert with data inside of Basecamp 4, you're in the right place. We're happy to have you!</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Compatibility with previous Basecamp APIs</h2><a id="user-content-compatibility-with-previous-basecamp-apis" class="anchor" aria-label="Permalink: Compatibility with previous Basecamp APIs" href="#compatibility-with-previous-basecamp-apis"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The Basecamp 4 API is not compatible with the <a href="https://github.com/basecamp/basecamp-classic-api">Basecamp Classic API</a> or the <a href="https://github.com/basecamp/bcx-api">Basecamp 2 API</a>. All integrations will start fresh with the new API. The core ingredients are the same, though: Basecamp 4 is a REST-style API that uses JSON for serialization and OAuth 2.0 for authentication.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">What's different?</h2><a id="user-content-whats-different" class="anchor" aria-label="Permalink: What's different?" href="#whats-different"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">If you've used a previous version of the Basecamp API, you need to adapt your integration code. Here are some notable changes for the Basecamp 4 API:</p> <ul dir="auto"> <li>We require OAuth 2.0 for <a href="#authentication">authentication</a>—no more Basic authentication</li> <li><a href="#pagination">Pagination</a> is performed via the <code>Link</code> and <code>X-Total-Count</code> headers</li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Making a request</h2><a id="user-content-making-a-request" class="anchor" aria-label="Permalink: Making a request" href="#making-a-request"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">All URLs start with <strong><code>https://3.basecampapi.com/999999999/</code></strong>. URLs are HTTPS only. The path is prefixed with the account ID, but no <code>/api/v1</code> API prefix. Also, note the different domain!</p> <p dir="auto">To make a request for all the projects on your account, append the <code>projects</code> index path to the base URL to form something like <code>https://3.basecampapi.com/999999999/projects.json</code>. In cURL, it looks like this:</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="curl -H "Authorization: Bearer $ACCESS_TOKEN" -A 'MyApp (yourname@example.com)' https://3.basecampapi.com/999999999/projects.json"><pre>curl -H <span class="pl-s"><span class="pl-pds">"</span>Authorization: Bearer <span class="pl-smi">$ACCESS_TOKEN</span><span class="pl-pds">"</span></span> -A <span class="pl-s"><span class="pl-pds">'</span>MyApp (yourname@example.com)<span class="pl-pds">'</span></span> https://3.basecampapi.com/999999999/projects.json</pre></div> <p dir="auto">To create something, it's the same idea, but you also have to include the <code>Content-Type</code> header and the JSON data:</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="curl -H "Authorization: Bearer $ACCESS_TOKEN" \ -H 'Content-Type: application/json' \ -A 'User-Agent: MyApp (yourname@example.com)' \ -d '{ "name": "My new project!" }' \ https://3.basecampapi.com/999999999/projects.json"><pre>curl -H <span class="pl-s"><span class="pl-pds">"</span>Authorization: Bearer <span class="pl-smi">$ACCESS_TOKEN</span><span class="pl-pds">"</span></span> \ -H <span class="pl-s"><span class="pl-pds">'</span>Content-Type: application/json<span class="pl-pds">'</span></span> \ -A <span class="pl-s"><span class="pl-pds">'</span>User-Agent: MyApp (yourname@example.com)<span class="pl-pds">'</span></span> \ -d <span class="pl-s"><span class="pl-pds">'</span>{ "name": "My new project!" }<span class="pl-pds">'</span></span> \ https://3.basecampapi.com/999999999/projects.json</pre></div> <p dir="auto">Throughout the Basecamp 4 API docs, we include "Copy as cURL" examples. To try the examples in your shell, copy your OAuth 2.0 access token into your clipboard and run:</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="export ACCESS_TOKEN=PASTE_ACCESS_TOKEN_HERE export ACCOUNT_ID=999999999"><pre><span class="pl-k">export</span> ACCESS_TOKEN=PASTE_ACCESS_TOKEN_HERE <span class="pl-k">export</span> ACCOUNT_ID=999999999</pre></div> <p dir="auto">Then you should be able to copy/paste any example from the docs. After pasting a cURL example, you can pipe it to a JSON pretty printer to make it more readable. Try <a href="https://jmhodges.github.io/jsonpp/" rel="nofollow">jsonpp</a> or <code>json_pp</code> on OSX:</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="curl -s -H "Authorization: Bearer $ACCESS_TOKEN" https://3.basecampapi.com/999999999/projects.json | json_pp"><pre>curl -s -H <span class="pl-s"><span class="pl-pds">"</span>Authorization: Bearer <span class="pl-smi">$ACCESS_TOKEN</span><span class="pl-pds">"</span></span> https://3.basecampapi.com/999999999/projects.json <span class="pl-k">|</span> json_pp</pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Authentication</h2><a id="user-content-authentication" class="anchor" aria-label="Permalink: Authentication" href="#authentication"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">As mentioned above, to authenticate you must use OAuth 2.0. OAuth 2.0 allows users to authorize your application to use Basecamp on their behalf without having to copy/paste API tokens or touch sensitive login information.</p> <p dir="auto">Read the <a href="https://github.com/basecamp/api/blob/master/sections/authentication.md">authentication guide</a> to get started.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Identifying your application</h2><a id="user-content-identifying-your-application" class="anchor" aria-label="Permalink: Identifying your application" href="#identifying-your-application"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">You must include a <code>User-Agent</code> header with <strong>both</strong>:</p> <ul dir="auto"> <li>The name of your application</li> <li>A link to your application or your email address</li> </ul> <p dir="auto">We use this information to get in touch if you're doing something wrong (so we can warn you before you're blacklisted) or something awesome (so we can congratulate you). Here are examples of acceptable <code>User-Agent</code> headers:</p> <ul dir="auto"> <li><code>User-Agent: Freshbooks (http://freshbooks.com/contact.php)</code></li> <li><code>User-Agent: Fabian's Ingenious Integration (fabian@example.com)</code></li> </ul> <p dir="auto">If you don't include a <code>User-Agent</code> header, you'll get a <code>400 Bad Request</code> response.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">JSON only</h2><a id="user-content-json-only" class="anchor" aria-label="Permalink: JSON only" href="#json-only"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">We use JSON for all API data. The style is no root element and snake_case for object keys. This means that you have to send the <code>Content-Type</code> header <code>Content-Type: application/json; charset=utf-8</code> when you're POSTing or PUTing data into Basecamp. All API URLs end in <code>.json</code> to indicate that they return JSON. Alternatively you can send <code>Accept: application/json</code>.</p> <p dir="auto">You'll receive a <code>415 Unsupported Media Type</code> response code if you don't include the <code>Content-Type</code> header.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Pagination</h2><a id="user-content-pagination" class="anchor" aria-label="Permalink: Pagination" href="#pagination"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Most collection APIs paginate their results. The number of requests that'll appear on each page is variable. In most cases, we use a <a href="https://github.com/basecamp/geared_pagination">geared pagination ratio</a> with 15 results on page 1, 30 on page 2, 50 on 3, and then 100 on 4 and above. The Basecamp 4 API follows the <a href="https://tools.ietf.org/html/rfc5988" rel="nofollow">RFC5988 convention</a> of using the <code>Link</code> header to provide URLs for the <code>next</code> page. Follow this convention to retrieve the next page of data—please don't build the pagination URLs yourself!</p> <p dir="auto">Here's an example response header from requesting the third page of <a href="/basecamp/bc3-api/blob/master/sections/messages.md#messages">messages</a>:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="Link: <https://3.basecampapi.com/999999999/buckets/2085958496/messages.json?page=4>; rel="next""><pre class="notranslate"><code>Link: <https://3.basecampapi.com/999999999/buckets/2085958496/messages.json?page=4>; rel="next" </code></pre></div> <p dir="auto">If the <code>Link</code> header is blank, that's the last page. The Basecamp 4 API also provides the <code>X-Total-Count</code> header, which displays the total number of resources in the collection you are fetching.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Using HTTP caching</h2><a id="user-content-using-http-caching" class="anchor" aria-label="Permalink: Using HTTP caching" href="#using-http-caching"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">You must use HTTP freshness headers to speed up your application and lighten the load on our servers. Most API responses will include an <code>ETag</code> or <code>Last-Modified</code> header. When you first request a resource, store these values. On subsequent requests, submit them back to us as <code>If-None-Match</code> and <code>If-Modified-Since</code>, respectively. If the resource hasn't changed since your last request, you'll get a <code>304 Not Modified</code> response with no body, saving you the time and bandwidth of sending something you already have.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Handling errors</h2><a id="user-content-handling-errors" class="anchor" aria-label="Permalink: Handling errors" href="#handling-errors"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">API clients must expect and gracefully handle transient server errors and rate limits. We recommend baking graceful 5xx and 429 retries into your integration from the beginning so errors are handled automatically.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Rate limiting (429 Too Many Requests)</h3><a id="user-content-rate-limiting-429-too-many-requests" class="anchor" aria-label="Permalink: Rate limiting (429 Too Many Requests)" href="#rate-limiting-429-too-many-requests"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">We return a <a href="http://tools.ietf.org/html/draft-nottingham-http-new-status-02#section-4" rel="nofollow">429 Too Many Requests</a> response when you've exceeded a rate limit. Consult the <code>Retry-After</code> response header to determine how long to wait (in seconds) before retrying the request.</p> <p dir="auto">Plan ahead to gracefully handle the failure modes that API backpressure will exert on your integration. Multiple rate limits are in effect, e.g. for GET vs POST requests and per-second/hour/day limits, and they're adjusted dynamically, so responding to them dynamically is essential, particularly at high traffic levels.</p> <p dir="auto">For a sense of scale, the first rate limit you'll commonly encounter is currently 50 requests per 10 second period per IP address.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#5xx_Server_errors" rel="nofollow">5xx server errors</a></h3><a id="user-content-5xx-server-errors" class="anchor" aria-label="Permalink: 5xx server errors" href="#5xx-server-errors"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">If Basecamp is having trouble, you will get a response with a 5xx status code indicating a server error. 500 (Internal Server Error), 502 (Bad Gateway), 503 (Service Unavailable), and 504 (Gateway Timeout) may be retried with <a href="https://en.wikipedia.org/wiki/Exponential_backoff" rel="nofollow">exponential backoff</a>.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">404 Not Found</h3><a id="user-content-404-not-found" class="anchor" aria-label="Permalink: 404 Not Found" href="#404-not-found"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">API requests may 404 due to deleted content, an inactive account, missing user permissions, etc. Detect these conditions to give your users a clear explanation about why they can't connect to Basecamp. Do not automatically retry these requests.</p> <ul dir="auto"> <li>Inactive account. 404 Not Found response with a <code>Reason: Account Inactive</code> header. Due to an expired trial or account suspension. All API requests to an inactive account will fail, so we recommend detecting and disabling the account in your integration as well.</li> <li>Inaccessible items. 404 Not Found response. Due to a deleted item or insufficient permissions.</li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Rich text content</h2><a id="user-content-rich-text-content" class="anchor" aria-label="Permalink: Rich text content" href="#rich-text-content"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Many resources, including messages, documents, and comments, represent their content as rich text in HTML. Rich text content may contain lists, block quotes, simple formatting, and inline attachments such as mentions, images, and files.</p> <p dir="auto">See the <a href="/basecamp/bc3-api/blob/master/sections/rich_text.md">Rich text</a> section for more information about working with HTML and attachments in rich text content.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">API endpoints</h2><a id="user-content-api-endpoints" class="anchor" aria-label="Permalink: API endpoints" href="#api-endpoints"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/attachments.md#attachments">Attachments</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/campfires.md#campfires">Campfires</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/card_table_cards.md#card-table-cards">Card table cards</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/card_table_columns.md#card-table-columns">Card table columns</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/card_table_steps.md#card-table-steps">Card table steps</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/card_tables.md#card-tables">Card tables</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/chatbots.md#chatbots">Chatbots</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/client_approvals.md#client-approvals">Client approvals</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/client_correspondences.md#client-correspondences">Client correspondences</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/client_replies.md#client-replies">Client replies</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/client_visibility.md#client-visibility">Client visibility</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/comments.md#comments">Comments</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/documents.md#documents">Documents</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/events.md#events">Events</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/forwards.md#forwards">Forwards</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/inbox_replies.md#inbox-replies">Inbox replies</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/inboxes.md#inboxes">Inboxes</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/lineup_markers.md#lineup-markers">Lineup Markers</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/message_boards.md#message-boards">Message Boards</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/message_types.md#message-types">Message Types</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/messages.md#messages">Messages</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/people.md#people">People</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/projects.md#projects">Projects</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/question_answers.md#question-answers">Question answers</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/questionnaires.md#questionnaires">Questionnaires</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/questions.md#questions">Questions</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/recordings.md#recordings">Recordings</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/schedule_entries.md#schedule-entries">Schedule entries</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/schedules.md#schedules">Schedules</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/subscriptions.md#subscriptions">Subscriptions</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/templates.md#templates">Templates</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/todolist_groups.md#to-do-list-groups">To-do list groups</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/todolists.md#to-do-lists">To-do lists</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/todosets.md#to-do-sets">To-do sets</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/todos.md#to-dos">To-dos</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/uploads.md#uploads">Uploads</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/vaults.md#vaults">Vaults</a></li> <li><a href="https://github.com/basecamp/bc3-api/blob/master/sections/webhooks.md#webhooks">Webhooks</a></li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Listing your application</h2><a id="user-content-listing-your-application" class="anchor" aria-label="Permalink: Listing your application" href="#listing-your-application"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">To add your application to our public list of Basecamp 4 integrations, go to <a href="https://github.com/basecamp/bc3-integrations">https://github.com/basecamp/bc3-integrations</a> and open a pull request.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Getting Help</h2><a id="user-content-getting-help" class="anchor" aria-label="Permalink: Getting Help" href="#getting-help"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">If you have a question about the API, please <a href="https://basecamp.com/support" rel="nofollow">open a support ticket</a>.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Conduct</h2><a id="user-content-conduct" class="anchor" aria-label="Permalink: Conduct" href="#conduct"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Please note that this project is released with a <a href="https://github.com/basecamp/bc3-api/blob/master/CONDUCT.md">Contributor Code of Conduct</a>. By participating in discussions about the Basecamp 4 API, you agree to abide by these terms.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">License</h2><a id="user-content-license" class="anchor" aria-label="Permalink: License" href="#license"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">These API docs are licensed under <a href="http://creativecommons.org/licenses/by-sa/4.0/" rel="nofollow">Creative Commons (CC BY-SA 4.0)</a>. 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0ZM9 11a1 1 0 1 1-2 0 1 1 0 0 1 2 0Z"></path> </svg> <button type="button" class="flash-close js-ajax-error-dismiss" aria-label="Dismiss error"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-x"> <path d="M3.72 3.72a.75.75 0 0 1 1.06 0L8 6.94l3.22-3.22a.749.749 0 0 1 1.275.326.749.749 0 0 1-.215.734L9.06 8l3.22 3.22a.749.749 0 0 1-.326 1.275.749.749 0 0 1-.734-.215L8 9.06l-3.22 3.22a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042L6.94 8 3.72 4.78a.75.75 0 0 1 0-1.06Z"></path> </svg> </button> You can’t perform that action at this time. </div> <template id="site-details-dialog"> <details class="details-reset details-overlay details-overlay-dark lh-default color-fg-default hx_rsm" open> <summary role="button" aria-label="Close dialog"></summary> <details-dialog class="Box Box--overlay d-flex flex-column anim-fade-in fast hx_rsm-dialog hx_rsm-modal"> <button class="Box-btn-octicon m-0 btn-octicon position-absolute right-0 top-0" type="button" aria-label="Close dialog" data-close-dialog> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-x"> <path d="M3.72 3.72a.75.75 0 0 1 1.06 0L8 6.94l3.22-3.22a.749.749 0 0 1 1.275.326.749.749 0 0 1-.215.734L9.06 8l3.22 3.22a.749.749 0 0 1-.326 1.275.749.749 0 0 1-.734-.215L8 9.06l-3.22 3.22a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042L6.94 8 3.72 4.78a.75.75 0 0 1 0-1.06Z"></path> </svg> </button> <div class="octocat-spinner my-6 js-details-dialog-spinner"></div> </details-dialog> </details> </template> <div class="Popover js-hovercard-content position-absolute" style="display: none; outline: none;"> <div class="Popover-message Popover-message--bottom-left Popover-message--large Box color-shadow-large" style="width:360px;"> </div> </div> <template id="snippet-clipboard-copy-button"> <div class="zeroclipboard-container position-absolute right-0 top-0"> <clipboard-copy aria-label="Copy" class="ClipboardButton btn js-clipboard-copy m-2 p-0" data-copy-feedback="Copied!" data-tooltip-direction="w"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-copy js-clipboard-copy-icon m-2"> <path d="M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 0 1 0 1.5h-1.5a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-1.5a.75.75 0 0 1 1.5 0v1.5A1.75 1.75 0 0 1 9.25 16h-7.5A1.75 1.75 0 0 1 0 14.25Z"></path><path d="M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0 1 14.25 11h-7.5A1.75 1.75 0 0 1 5 9.25Zm1.75-.25a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-7.5a.25.25 0 0 0-.25-.25Z"></path> </svg> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-check js-clipboard-check-icon color-fg-success d-none m-2"> <path d="M13.78 4.22a.75.75 0 0 1 0 1.06l-7.25 7.25a.75.75 0 0 1-1.06 0L2.22 9.28a.751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018L6 10.94l6.72-6.72a.75.75 0 0 1 1.06 0Z"></path> </svg> </clipboard-copy> </div> </template> <template id="snippet-clipboard-copy-button-unpositioned"> <div class="zeroclipboard-container"> <clipboard-copy aria-label="Copy" class="ClipboardButton btn btn-invisible js-clipboard-copy m-2 p-0 d-flex flex-justify-center flex-items-center" data-copy-feedback="Copied!" data-tooltip-direction="w"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-copy js-clipboard-copy-icon"> <path d="M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 0 1 0 1.5h-1.5a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-1.5a.75.75 0 0 1 1.5 0v1.5A1.75 1.75 0 0 1 9.25 16h-7.5A1.75 1.75 0 0 1 0 14.25Z"></path><path d="M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0 1 14.25 11h-7.5A1.75 1.75 0 0 1 5 9.25Zm1.75-.25a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-7.5a.25.25 0 0 0-.25-.25Z"></path> </svg> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-check js-clipboard-check-icon color-fg-success d-none"> <path d="M13.78 4.22a.75.75 0 0 1 0 1.06l-7.25 7.25a.75.75 0 0 1-1.06 0L2.22 9.28a.751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018L6 10.94l6.72-6.72a.75.75 0 0 1 1.06 0Z"></path> </svg> </clipboard-copy> </div> </template> </div> <div id="js-global-screen-reader-notice" class="sr-only mt-n1" aria-live="polite" aria-atomic="true" ></div> <div id="js-global-screen-reader-notice-assertive" class="sr-only mt-n1" aria-live="assertive" aria-atomic="true"></div> </body> </html>