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Note: Content API for Shopping will be sunset on August 18, 2026.
Method: collections.create
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Uploads a collection to your Merchant Center account. If a collection with the same collectionId already exists, this method updates that entry. In each update, the collection is completely replaced by the fields in the body of the update request.
HTTP request
POST https://shoppingcontent.googleapis.com/content/v2.1/{merchantId}/collections
Path parameters
| Parameters |
merchantId |
string (int64 format)
Required. The ID of the account that contains the collection. This account cannot be a multi-client account.
|
Request body
The request body contains an instance of Collection.
Response body
If successful, the response body contains a newly created instance of Collection.
Authorization scopes
Requires one of the following OAuth scopes:
https://www.googleapis.com/auth/content
For more information, see the OAuth 2.0 Overview.
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Last updated 2025-02-25 UTC.
[null,null,["Last updated 2025-02-25 UTC."],[[["\u003cp\u003eThis method uploads a new collection or updates an existing one within your Merchant Center account.\u003c/p\u003e\n"],["\u003cp\u003eCollections are identified by a unique \u003ccode\u003ecollectionId\u003c/code\u003e and are entirely replaced during updates.\u003c/p\u003e\n"],["\u003cp\u003eThe request requires your \u003ccode\u003emerchantId\u003c/code\u003e and the collection data in the request body.\u003c/p\u003e\n"],["\u003cp\u003eSuccessful requests return the updated or newly created collection data.\u003c/p\u003e\n"],["\u003cp\u003eAuthorization is necessary using the \u003ccode\u003ehttps://www.googleapis.com/auth/content\u003c/code\u003e scope.\u003c/p\u003e\n"]]],["This describes the process for uploading or updating a collection in a Merchant Center account. A `POST` request is sent to a specific URL, including the `merchantId` as a required path parameter. The request body must contain a `Collection` instance. Upon success, the response body returns a new `Collection` instance. Authorization for this operation requires the `https://www.googleapis.com/auth/content` OAuth scope. It replaces existing entries based on `collectionId` with the body content.\n"],null,["# Method: collections.create\n\n- [HTTP request](#body.HTTP_TEMPLATE)\n- [Path parameters](#body.PATH_PARAMETERS)\n- [Request body](#body.request_body)\n- [Response body](#body.response_body)\n- [Authorization scopes](#body.aspect)\n- [Try it!](#try-it)\n\nUploads a collection to your Merchant Center account. If a collection with the same collectionId already exists, this method updates that entry. In each update, the collection is completely replaced by the fields in the body of the update request.\n\n### HTTP request\n\n`POST https://shoppingcontent.googleapis.com/content/v2.1/{merchantId}/collections`\n\n### Path parameters\n\n| Parameters ||\n|--------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `merchantId` | `string (`[int64](https://developers.google.com/discovery/v1/type-format)` format)` Required. The ID of the account that contains the collection. This account cannot be a multi-client account. |\n\n### Request body\n\nThe request body contains an instance of [Collection](/shopping-content/reference/rest/v2.1/collections#Collection).\n\n### Response body\n\nIf successful, the response body contains a newly created instance of [Collection](/shopping-content/reference/rest/v2.1/collections#Collection).\n\n### Authorization scopes\n\nRequires one of the following OAuth scopes:\n\n- `https://www.googleapis.com/auth/content`\n\nFor more information, see the [OAuth 2.0 Overview](/identity/protocols/OAuth2)."]]