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  Meet
  
Merchant API
  - the official successor to Content API for Shopping.
  
  update
  Get the latest
  on new Merchant API features, bug fixes, and updates.
   
  add_alert
  Note: Content API for Shopping will be sunset on August 18, 2026.
         
       
     
  
  
  
  
  
    
      Method: collections.create
    
    
      
    
    
      
      Stay organized with collections
    
    
      
      Save and categorize content based on your preferences.
    
  
  
      
    
  
  
  
  
  
    
  
  
    
    
    
    
    
      
      
      
        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.
        
      
      
    
  
  
  
 
  
    
    
      
       
    
    
  
  
  Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
  Last updated 2025-02-25 UTC.
  
  
  
    
      [null,null,["Last updated 2025-02-25 UTC."],[],["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"]]