在支持 CSS 计划的国家/地区，购物比较服务 (CSS) 可以代表商家在 Google 上投放购物广告。Content API 允许 CSS 网域和 CSS 组使用标签整理其关联的账号。CSS 网域可以列出、标记和过滤与该网域相关联的 Merchant Center 账号。CSS 组可以标记并列出与该组关联的 CSS 网域。这些 Content API 服务以程序化方式提供 Comparison Shopping Service Center 中的部分功能。
Merchant Center 账号是指 CSS 网域为其投放购物广告的商家。CSS 可以与多种不同类型的 Merchant Center 账号相关联，包括多客户账号 (MCA) 和各个商家账号。每个 Merchant Center 账号只能与一个 CSS 网域相关联。如需详细了解不同类型的 Merchant Center 账号，请参阅 Comparison Shopping Service Center 中的账号类型。
CSS 标签类型
CSS 使用两种类型的标签：
人工标签由 CSS 网域创建并分配给 Merchant Center 账号，由 CSS 组创建并分配给 CSS 网域。
自动标签由 CSS Center 自动创建并分配给 Merchant Center 账号。自动标签适用于不同类型的账号指标，可帮助您识别重要账号和重大账号活动。
为与 CSS 网域相关联的 Merchant Center 账号创建标签并应用标签后，您可以使用 accounts.list 方法，并在请求中传递标签查询参数，以仅返回具有该标签的账号。以下示例演示了如何使用创建标签示例中创建的 key-accounts 标签的 id (123) 过滤与 CSS 网域相关联的 Merchant Center 账号。如需检索账号，请使用以下网址发出 GET 请求：
[null,null,["最后更新时间 (UTC)：2025-08-13。"],[[["\u003cp\u003eThe Merchant API is the new version of the Content API for Shopping and allows Comparison Shopping Services (CSSs) to manage accounts and data programmatically.\u003c/p\u003e\n"],["\u003cp\u003eCSSs can utilize the API to organize their associated accounts using labels, which can be manually created or automatically generated based on account metrics.\u003c/p\u003e\n"],["\u003cp\u003eThe API provides endpoints for creating, applying, and retrieving labels for both CSS domains and Merchant Center accounts.\u003c/p\u003e\n"],["\u003cp\u003eCSS domains have specific requirements when using the API, including using their \u003ccode\u003ecssId\u003c/code\u003e and specifying the \u003ccode\u003eview=CSS\u003c/code\u003e parameter.\u003c/p\u003e\n"],["\u003cp\u003eExamples are provided for creating labels, applying labels to accounts, filtering accounts by labels, and managing labels for CSS domains.\u003c/p\u003e\n"]]],["The Merchant API beta, a new version of the Content API for Shopping, allows Comparison Shopping Services (CSSs) to manage Merchant Center accounts. CSSs can use `accounts.labels` to create manual labels and `accounts.updatelabels` to apply them to Merchant Center accounts or CSS domains. `accounts.list` enables filtering Merchant Center accounts by label, and `csses` manages associations between labels and CSS domains. This allows for the creation of labels to identify important accounts and use them to filter and organize accounts.\n"],null,["# CSS label management\n\nComparison Shopping Services (CSSs) can place shopping ads on Google on behalf\nof merchants in countries where the CSS program is available. The Content API\nallows CSS domains and CSS groups to organize their associated accounts using\nlabels. CSS domains can list, label, and filter the Merchant Center accounts\nassociated with the domain. CSS groups can label and list the CSS domains\naffiliated with the group. These Content API services provide programmatic\nequivalents to some of the features available in the [Comparison Shopping\nService Center](//support.google.com/merchants/answer/9773265).\n\nFor more information about CSSs, see\n[Comparison Shopping Services](//support.google.com/merchants/topic/9080307).\nFor information on working with labels in CSS Center, see\n[Use account labels in Comparison Shopping Service Center](//support.google.com/merchants/answer/9773369).\n\nCSS account types\n-----------------\n\nCSSs use the following three types of accounts:\n\n- *CSS groups* are the top-level accounts that can contain one or multiple CSS domains.\n- *CSS domains* are the accounts for the CSSs themselves, which place Shopping ads on behalf of merchants. Each CSS domain can only belong to one CSS group.\n- *Merchant Center accounts* are the merchants for which CSS domains place Shopping ads. CSSs can be associated with several different types of Merchant Center accounts, including multi-client accounts (MCAs) and individual merchant accounts. Each Merchant Center account can only be associated with one CSS domain. For more information about different types of Merchant Center accounts, see [Account types in Comparison Shopping Service Center](//support.google.com/merchants/answer/9772965).\n\nCSS label types\n---------------\n\nCSSs use two types of labels:\n\n- *Manual labels* are created and assigned to Merchant Center accounts by CSS domains, and to CSS domains by CSS groups.\n- *Automatic labels* are automatically created and assigned to Merchant Center accounts by CSS Center. Automatic labels are available for different types of account metrics and can help you identify important accounts and significant account activity.\n\nFor more information about label types, including the available automatic\nlabels, see\n[Use account labels in Comparison Shopping Service Center](//support.google.com/merchants/answer/9773369).\n\nContent API functionality and endpoints for CSSs\n------------------------------------------------\n\nThe Content API offers the following endpoints for CSSs:\n\n- [`accounts.labels`](/shopping-content/reference/rest/v2.1/accounts.labels): Allows you to create, retrieve, and modify labels to apply to CSS domain and Merchant Center accounts. For an example, see [Creating a label](#create-label).\n- [`accounts.updatelabels`](/shopping-content/reference/rest/v2.1/accounts/updatelabels): Allows you to apply labels to a single Merchant Center account. For an example, see [Applying a label to a Merchant Center account](#apply-label).\n- [`accounts.list`](/shopping-content/reference/rest/v2.1/accounts/list): Allows you to retrieve all the Merchant Center accounts associated with a CSS domain, including the labels applied to each account. You can also filter by label `id` to retrieve a subset of associated accounts. For an example, see [Using labels to filter Merchant Center accounts](#filter).\n- [`accounts.get`](/shopping-content/reference/rest/v2.1/accounts/get): Allows you to retrieve the labels applied to a single Merchant Center account.\n- [`csses`](/shopping-content/reference/rest/v2.1/csses): Allows you to view and manage the associations between labels and CSS domains. For an example, see [Applying a label to a CSS domain](#domain-label).\n\nWhen calling `accounts` endpoints as a CSS domain, be aware of the following\nrequirements:\n\n- CSS domains must provide their `cssId` instead of a `merchantId`.\n- CSS domains must provide a query parameter of `view=CSS`.\n- CSS domains must provide their associated Merchant Center account id as the `accountId`.\n\n| **Note:** Only CSS domain and CSS group accounts can use labels. Merchant Center accounts themselves do not have access to the label functionality.\n\nExample: Create a label\n-----------------------\n\nYou can use the `accounts.labels.create` method to create a new label. Labels\ncan be applied to CSS domains and Merchant Center accounts. However, labels for\nthe different account types are separate and cannot be used interchangeably. To\ncreate a domain-level label, which can be applied to Merchant Center accounts\nassociated with the domain, use the CSS domain ID as the `accountId` when\ncreating the label. To create a group-level label, which can be applied to CSS\ndomains affiliated with the group, use the CSS group ID as the `accountId` when\ncreating the label.\n\nThe following example demonstrates how to create a **domain-level** key-accounts\nlabel, which can then be applied to Merchant Center accounts associated with the\ndomain. To create the label, make a `POST` request using the following URL and\nrequest body: \n\n https://shoppingcontent.googleapis.com/content/v2.1/accounts/\u003cvar translate=\"no\"\u003e\u003cspan class=\"devsite-syntax-nt\"\u003eaccountId\u003c/span\u003e\u003c/var\u003e/labels\n\n {\n \"name\": \"key-accounts\",\n \"description\": \"All accounts with over a million products\"\n }\n\nExample: Apply a label to a Merchant Center account\n---------------------------------------------------\n\nYou can use the `accounts.updatelabels` method to assign labels to a Merchant\nCenter account associated with a CSS domain. The following example demonstrates\nhow to apply the **key-accounts** label created in the previous example to one\nof your most important Merchant Center accounts.\n| **Note:** You must use the `id` of the label, not the name, when applying a label to a Merchant Center account. The `id` is automatically assigned to the label and returned in the response when the label is created. You can also retrieve the label `id` by calling `accounts.labels.list`.\n\nTo apply the label, make a `POST` request using the following URL and request\nbody: \n\n https://shoppingcontent.googleapis.com/content/v2.1/\u003cvar translate=\"no\"\u003e\u003cspan class=\"devsite-syntax-nt\"\u003ecssId\u003c/span\u003e\u003c/var\u003e/accounts/\u003cvar translate=\"no\"\u003e\u003cspan class=\"devsite-syntax-nt\"\u003esubaccountId\u003c/span\u003e\u003c/var\u003e/updatelabels/\n\n {\n \"labelIds\": ['123'] // 'key-accounts'\n }\n\nExample: Use labels to filter Merchant Center accounts\n------------------------------------------------------\n\nAfter creating and applying labels to the Merchant Center accounts associated\nwith a CSS domain, you can use the `accounts.list` method and pass the label\nquery parameter in your request to return only the accounts with that label. The\nfollowing example demonstrates how to filter the Merchant Center accounts\nassociated with a CSS domain, using the `id` (`123`) of the **key-accounts**\nlabel created in the [Creating a label](#create-label) example. To retrieve the\naccoungs, make a `GET` request using the following URL: \n\n https://shoppingcontent.googleapis.com/content/v2.1/\u003cvar translate=\"no\"\u003e\u003cspan class=\"devsite-syntax-nt\"\u003ecssId\u003c/span\u003e\u003c/var\u003e/accounts?view=CSS&label=123\n\nNo request body is needed.\n\nExample: Apply a label to a CSS domain\n--------------------------------------\n\nYou can also use the `csses.updatelabels` method to assign labels to a CSS\ndomain affiliated with a CSS group. The following example demonstrates how to\napply a **key-domains** group-level label created using the\n`accounts.labels.create` method to one of your most important CSS domain\naccounts. Keep in mind that labels for CSS domains and Merchant Center accounts\nare separate. Group-level labels must be created using a CSS group ID as its\n`accountId`.\n| **Note:** You must use the `id` of the label, not the name, when applying a label to a CSS domain. The `id` is automatically assigned to the label and returned in the response when the label is created. You can also retrieve the label `id` by calling `accounts.labels.list`.\n\nTo apply the label, make a `POST` request using the following URL and request\nbody: \n\n https://shoppingcontent.googleapis.com/content/v2.1/\u003cvar translate=\"no\"\u003e\u003cspan class=\"devsite-syntax-nt\"\u003ecssGroupId\u003c/span\u003e\u003c/var\u003e/csses/\u003cvar translate=\"no\"\u003e\u003cspan class=\"devsite-syntax-nt\"\u003ecssDomainId\u003c/span\u003e\u003c/var\u003e/updatelabels/\n\n {\n \"labelIds\": ['456'] // 'key-domains'\n }"]]
