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Overview of Google Pay Merchant SDK | Google Pay for India | Google for Developers
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M140.89,29.92l3.93,2.62c-1.27,1.88-4.32,5.11-9.61,5.11c-6.55,0-11.28-5.07-11.28-11.53c0-6.86,4.77-11.53,10.71-11.53c5.98,0,8.91,4.76,9.87,7.34l0.52,1.31l-15.42,6.38c1.18,2.31,3.01,3.49,5.59,3.49C137.79,33.11,139.58,31.84,140.89,29.92zM128.79,25.77l10.31-4.28c-0.57-1.44-2.27-2.45-4.28-2.45C132.24,19.04,128.66,21.31,128.79,25.77z"/> </svg>Pay </a> </li> </ul> </span> </div> <div class="devsite-top-logo-row-middle"> <div class="devsite-header-upper-tabs"> <devsite-tabs class="upper-tabs"> <nav class="devsite-tabs-wrapper" aria-label="Upper tabs"> <tab > <a href="https://developers.google.com/pay" track-metadata-eventdetail="https://developers.google.com/pay" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - overview" track-metadata-module="primary nav" data-category="Overview" data-label="navTopMenu" track-name="overview" data-action="tabClick" > Overview </a> </tab> <tab class="devsite-dropdown "> <a 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class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip> </li> <li class="devsite-nav-item"> <a href="https://developers.google.com/pay/api/android/overview" track-type="nav" track-metadata-eventdetail="https://developers.google.com/pay/api/android/overview" track-metadata-position="nav - payments" track-metadata-module="tertiary nav" track-metadata-module_headline=" " tooltip data-action="dropdownClick" data-label="navTopMenu" data-category="android" > <div class="devsite-nav-item-title"> Android </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developers.google.com/pay/api/web/overview" track-type="nav" track-metadata-eventdetail="https://developers.google.com/pay/api/web/overview" track-metadata-position="nav - payments" track-metadata-module="tertiary nav" track-metadata-module_headline=" " tooltip data-label="navTopMenu" data-category="web" data-action="dropdownClick" > <div class="devsite-nav-item-title"> Web </div> </a> </li> </ul> </div> </div> </div> </tab> <tab > <a href="https://developers.google.com/wallet" track-metadata-eventdetail="https://developers.google.com/wallet" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - wallet" track-metadata-module="primary nav" data-category="Wallet" data-label="navTopMenu" track-name="wallet" data-action="tabClick" > Wallet </a> </tab> <tab class="devsite-dropdown devsite-active "> <a href="https://developers.google.com/pay/india/api" track-metadata-eventdetail="https://developers.google.com/pay/india/api" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - india" track-metadata-module="primary nav" aria-label="India, selected" data-category="Payments" data-label="navTopMenu" track-name="india" data-action="tabClick" > India </a> <a href="#" role="button" aria-haspopup="true" aria-expanded="false" aria-label="Dropdown menu for India" track-type="nav" track-metadata-eventdetail="https://developers.google.com/pay/india/api" track-metadata-position="nav - india" track-metadata-module="primary nav" data-category="Payments" data-label="navTopMenu" track-name="india" data-action="tabClick" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></a> <div class="devsite-tabs-dropdown" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Merchant APIs</li> <li class="devsite-nav-item"> <a href="https://developers.google.com/pay/india/api/android/overview" track-type="nav" track-metadata-eventdetail="https://developers.google.com/pay/india/api/android/overview" track-metadata-position="nav - india" track-metadata-module="tertiary nav" track-metadata-module_headline="merchant apis" tooltip data-action="dropdownClick" data-category="android-india" data-label="navTopMenu" > <div class="devsite-nav-item-title"> Android </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developers.google.com/pay/india/api/ios/overview" track-type="nav" track-metadata-eventdetail="https://developers.google.com/pay/india/api/ios/overview" track-metadata-position="nav - india" track-metadata-module="tertiary nav" track-metadata-module_headline="merchant apis" tooltip data-category="ios-india" data-label="navTopMenu" data-action="dropdownClick" > <div class="devsite-nav-item-title"> iOS </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developers.google.com/pay/india/api/web/intro" track-type="nav" track-metadata-eventdetail="https://developers.google.com/pay/india/api/web/intro" track-metadata-position="nav - india" track-metadata-module="tertiary nav" track-metadata-module_headline="merchant apis" tooltip data-label="navTopMenu" data-action="dropdownClick" data-category="web-india" > <div class="devsite-nav-item-title"> Web </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developers.google.com/pay/india/api/otherapis/omnichannel/overview" track-type="nav" track-metadata-eventdetail="https://developers.google.com/pay/india/api/otherapis/omnichannel/overview" track-metadata-position="nav - india" track-metadata-module="tertiary nav" track-metadata-module_headline="merchant apis" tooltip data-label="navTopMenu" data-category="omnichannel-india" data-action="dropdownClick" > <div class="devsite-nav-item-title"> Omnichannel </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developers.google.com/pay/india/api/merchant-sdk/guides/overview" track-type="nav" track-metadata-eventdetail="https://developers.google.com/pay/india/api/merchant-sdk/guides/overview" track-metadata-position="nav - india" track-metadata-module="tertiary nav" track-metadata-module_headline="merchant apis" tooltip data-label="navTopMenu" data-action="dropdownClick" data-category="merchant-india" > <div class="devsite-nav-item-title"> Merchant SDK </div> </a> </li> </ul> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>PSP APIs</li> <li class="devsite-nav-item"> <a href="https://developers.google.com/pay/india/api/psp/overview" track-type="nav" track-metadata-eventdetail="https://developers.google.com/pay/india/api/psp/overview" track-metadata-position="nav - india" track-metadata-module="tertiary nav" track-metadata-module_headline="merchant apis" tooltip data-category="psp-india" data-label="navTopMenu" data-action="dropdownClick" > <div class="devsite-nav-item-title"> UPI callbacks </div> </a> </li> </ul> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Bank APIs</li> <li class="devsite-nav-item"> <a href="https://developers.google.com/pay/india/api/banks/credit-card/guides/overview" track-type="nav" track-metadata-eventdetail="https://developers.google.com/pay/india/api/banks/credit-card/guides/overview" track-metadata-position="nav - india" track-metadata-module="tertiary nav" track-metadata-module_headline="merchant apis" tooltip data-label="navTopMenu" data-action="dropdownClick" data-category="cards-india" > <div class="devsite-nav-item-title"> Credit Card </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developers.google.com/pay/india/api/banks/loans/guides/overview" track-type="nav" track-metadata-eventdetail="https://developers.google.com/pay/india/api/banks/loans/guides/overview" track-metadata-position="nav - india" track-metadata-module="tertiary nav" track-metadata-module_headline="merchant apis" tooltip data-label="navTopMenu" data-action="dropdownClick" data-category="loans-india" > <div class="devsite-nav-item-title"> Personal Loans </div> </a> </li> </ul> </div> </div> </div> </tab> <tab > <a href="https://developers.google.com/pay/payment-card-recognition/debit-credit-card-recognition" track-metadata-eventdetail="https://developers.google.com/pay/payment-card-recognition/debit-credit-card-recognition" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - payment card recognition" track-metadata-module="primary nav" data-category="payment-card-recognition" data-label="navTopMenu" track-name="payment card recognition" data-action="tabClick" > Payment Card Recognition </a> </tab> <tab > <a href="https://developers.google.com/pay/spot" track-metadata-eventdetail="https://developers.google.com/pay/spot" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - spot platform" track-metadata-module="primary nav" data-category="spot-platform" data-label="navTopMenu" track-name="spot platform" data-action="tabClick" > Spot Platform </a> </tab> </nav> </devsite-tabs> </div> <devsite-search enable-signin enable-search enable-suggestions enable-query-completion project-name="Google Pay for India" tenant-name="Google for Developers" project-scope="/pay/india/api/merchant-sdk/guides/overview" url-scoped="https://developers.google.com/s/results/pay/india/api/merchant-sdk/guides/overview" > <form class="devsite-search-form" action="https://developers.google.com/s/results" method="GET"> <div class="devsite-search-container"> <button type="button" search-open class="devsite-search-button devsite-header-icon-button button-flat material-icons" aria-label="Open search"></button> <div class="devsite-searchbox"> <input aria-activedescendant="" aria-autocomplete="list" aria-label="Search" aria-expanded="false" aria-haspopup="listbox" autocomplete="off" class="devsite-search-field devsite-search-query" name="q" placeholder="Search" role="combobox" type="text" value="" > <div class="devsite-search-image material-icons" aria-hidden="true"> </div> <div class="devsite-search-shortcut-icon-container" aria-hidden="true"> <kbd class="devsite-search-shortcut-icon">/</kbd> </div> </div> </div> </form> <button type="button" search-close class="devsite-search-button devsite-header-icon-button button-flat material-icons" aria-label="Close search"></button> </devsite-search> </div> <devsite-language-selector> <ul role="presentation"> <li role="presentation"> <a role="menuitem" lang="en" >English</a> </li> <li role="presentation"> <a role="menuitem" lang="de" >Deutsch</a> </li> <li role="presentation"> <a role="menuitem" lang="es" >Español</a> </li> <li role="presentation"> <a role="menuitem" lang="fr" >Français</a> </li> <li role="presentation"> <a role="menuitem" lang="id" >Indonesia</a> </li> <li role="presentation"> <a role="menuitem" lang="pt_br" >Português – Brasil</a> </li> <li role="presentation"> <a role="menuitem" lang="ru" >Русский</a> </li> <li role="presentation"> <a role="menuitem" lang="zh_cn" >中文 – 简体</a> </li> <li role="presentation"> <a role="menuitem" lang="ja" >日本語</a> </li> <li role="presentation"> <a role="menuitem" lang="ko" >한국어</a> </li> </ul> </devsite-language-selector> <devsite-user enable-profiles fp-auth id="devsite-user"> <span class="button devsite-top-button" aria-hidden="true" visually-hidden>Sign in</span> </devsite-user> </div> </div> </div> <div class="devsite-collapsible-section "> <div class="devsite-header-background"> <div class="devsite-product-id-row" > <div class="devsite-product-description-row"> <ul class="devsite-breadcrumb-list" aria-label="Lower header breadcrumb"> <li class="devsite-breadcrumb-item "> <a href="https://developers.google.com/pay/india/api" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Lower Header" data-value="1" track-type="globalNav" track-name="breadcrumb" track-metadata-position="1" track-metadata-eventdetail="Google Pay for India" > Google Pay for India </a> </li> <li class="devsite-breadcrumb-item "> <div class="devsite-breadcrumb-guillemet material-icons" aria-hidden="true"></div> <a href="https://developers.google.com/pay/india/api/merchant-sdk/guides/overview" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Lower Header" data-value="2" track-type="globalNav" track-name="breadcrumb" track-metadata-position="2" track-metadata-eventdetail="Google Pay for India" > Merchant SDK </a> </li> </ul> </div> <div class="devsite-product-button-row"> <a href="https://pay.google.com/business/console?utm_source=devsite&utm_medium=devsite&utm_campaign=devsite" class="button external " target="_blank" >Manage integrations in console</a> </div> </div> <div class="devsite-doc-set-nav-row"> <devsite-tabs class="lower-tabs"> <nav class="devsite-tabs-wrapper" aria-label="Lower tabs"> <tab class="devsite-active"> <a href="https://developers.google.com/pay/india/api/merchant-sdk/guides/overview" 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Events" data-label="Breadcrumbs" data-value="4" track-type="globalNav" track-name="breadcrumb" track-metadata-position="4" track-metadata-eventdetail="Google Pay for India" > Google Pay for India </a> </li> <li class="devsite-breadcrumb-item "> <div class="devsite-breadcrumb-guillemet material-icons" aria-hidden="true"></div> <a href="https://developers.google.com/pay/india/api/merchant-sdk/guides/overview" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Breadcrumbs" data-value="5" track-type="globalNav" track-name="breadcrumb" track-metadata-position="5" track-metadata-eventdetail="Google Pay for India" > Merchant SDK </a> </li> </ul> <devsite-thumb-rating position="header"> </devsite-thumb-rating> </div> <h1 class="devsite-page-title" tabindex="-1"> Overview of Google Pay Merchant SDK </h1> <devsite-feature-tooltip ack-key="AckCollectionsBookmarkTooltipDismiss" analytics-category="Site-Wide Custom Events" analytics-action-show="Callout Profile displayed" analytics-action-close="Callout Profile dismissed" analytics-label="Create Collection Callout" class="devsite-page-bookmark-tooltip nocontent" dismiss-button="true" id="devsite-collections-dropdown" dismiss-button-text="Dismiss" close-button-text="Got it"> <devsite-bookmark></devsite-bookmark> <span slot="popout-heading"> Stay organized with collections </span> <span slot="popout-contents"> Save and categorize content based on your preferences. </span> </devsite-feature-tooltip> <div class="devsite-page-title-meta"><devsite-view-release-notes></devsite-view-release-notes></div> <devsite-toc class="devsite-nav" depth="2" devsite-toc-embedded > </devsite-toc> <div class="devsite-article-body clearfix "> <p>The <strong>Google Pay Merchant SDK</strong> (or <strong>Google Pay SDK</strong>) is a toolkit that enables developers to integrate their applications with Google Pay for accepting payments online. Users making purchases on the developers’ apps can make payments easily and conveniently.</p> <p>The SDK can be integrated directly by the merchant into their app, or it may be bundled into the SDK provided by their Payment Gateway (PG) . If you are a merchant with an existing PG SDK, check with your PG if the Google Pay SDK functionality can be provided within that PG SDK.</p> <h2 id="high_level_flow" data-text="High level Google Pay SDK flow" tabindex="-1">High level Google Pay SDK flow</h2> <p><img src="/static/pay/india/api/merchant-sdk/images/GPay-merchant-SDK-flow2.png" alt="SDK flow"></p> <ol> <li>Merchant app integrated with Google Pay SDK calls the <a href="/pay/india/api/merchant-sdk/reference/api#isreadytopay"><code translate="no" dir="ltr">IsReadyToPay</code></a> API to check if the user device is ready to pay with Google Pay. Assume the device is ready.</li> <li>Merchant app calls the <a href="/pay/india/api/merchant-sdk/reference/api#loadpaymentdata"><code translate="no" dir="ltr">loadPaymentData</code></a> API with the required input, which is passed on to Google Pay.</li> <li>Google Pay user selects from available payment methods, and authenticates the payment. The Google Pay server backend is called with instructions to execute the payment.</li> <li>The Google Pay server makes the payment call, either to the merchant’s PG or to the user’s PSP (Payment Service Provider). The former is used for card payments and for merchants who have UPI payments set up through their PG, while the latter is for cases where the merchant wants to integrate with UPI directly through Google Pay.</li> <li>The payment status is returned to the Google Pay server.</li> <li>The Google Pay client receives the state, and displays it in the UI that is rendered on the merchant app.</li> <li><p>The Google Pay SDK reverts control to the merchant app. In cases where the merchant’s PG has provided a response bundle for the merchant, this is included in the <code translate="no" dir="ltr">gatewayResponse</code> field.</p> <ol> <li>The Google Pay response can be used for an initial check of payment parameters such as the amount, transaction ID, and payee VPA.</li> <li><p>To check the payment status, the merchant needs to do the following:</p> <ul> <li>Verify the authenticity of <code translate="no" dir="ltr">gatewayResponse</code>, if the field is populated.</li> <li>Call their PG or acquiring PSP for status, if the <code translate="no" dir="ltr">gatewayResponse</code> field is not populated.</li> </ul></li> </ol></li> <li><p>The merchant displays the payment status and next steps for fulfilment in the merchant app.</p></li> </ol> </div> <devsite-recommendations display="in-page" hidden yield> </devsite-recommendations> <devsite-thumb-rating position="footer"> </devsite-thumb-rating> <devsite-recommendations id="recommendations-link" yield></devsite-recommendations> <div class="devsite-floating-action-buttons"> </div> </article> <devsite-content-footer class="nocontent"> <p>Except as otherwise noted, the content of this page is licensed under the <a href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 License</a>, and code samples are licensed under the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache 2.0 License</a>. 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