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Google Merchant Center: Update a product input — MCP tool

Google Merchant Center MCP tool: Sparse-updates an existing product input — the cheap way to change price or availability without re-sending the whole product.

Technical name: update_product_input

What task it solves

I want to update a product input.

Sparse-updates an existing product input — the cheap way to change price or availability without re-sending the whole product.

When to use it

Use this capability when you need “Update a product input” without doing the same work manually in the Google Merchant Center interface. It runs only when an AI client calls it.

What to provide

  • account — optional. Merchant Center account ID (digits, e.g. "123456"). Omit to use the GOOGLE_MERCHANTS_ACCOUNT_ID default.
  • product_input — required. Product input ID: "contentLanguage~feedLabel~offerId" or the base64url name.
  • data_source — required. Data source: numeric ID (e.g. "104628") or full name "accounts/{account}/dataSources/{id}". Product/promotion writes require an API-type data source (input: API), not a file feed.
  • update_mask — optional. Comma-separated attribute paths to update, e.g. "productAttributes.price". Omit to apply every populated field of this request.
  • product_attributes — optional. Product attributes to change (camelCase), e.g. {"price": {"amountMicros": "8990000", "currencyCode": "USD"}, "availability": "out_of_stock"}.
  • custom_attributes — optional. Custom (non-standard) attributes as {name, value} pairs.
  • version_number — optional. Optional int64 freshness guard (as a string).

What it returns

Returns the updated ProductInput; the processed product refreshes after async processing (minutes).

What changes in Google Merchant Center

The tool changes real Google Merchant Center data as described above. The server does not promise an automatic rollback.

Example request

Update a product input in Google Merchant Center. Ask for any required identifiers that are missing.

Errors and limitations

data_source must be the source holding the input. update_mask is a comma-separated list of attribute paths (e.g. "productAttributes.price,productAttributes.availability"); when omitted, all populated fields of the request are applied. Every path listed in update_mask MUST carry a value in this request — a masked path with no value ERASES that attribute (the tool rejects such requests locally; to clear an attribute intentionally use raw_request). To create a product or replace it wholesale use insert_product_input.

Access also depends on token permissions, quotas, and upstream API limits.

Related MCP tools

Technical details