Google Merchant Center: Re-fetch a file feed now — MCP tool

Google Merchant Center MCP tool: Triggers an immediate re-fetch (re-read) of a file-based feed outside its regular schedule.

Technical name: fetch_data_source

What task it solves

I want to re-fetch a file feed now.

Triggers an immediate re-fetch (re-read) of a file-based feed outside its regular schedule.

When to use it

Use this capability when you need “Re-fetch a file feed now” 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.
• 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.

What it returns

Returns an empty object on success — the fetch itself runs asynchronously on Google's side.

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

Re-fetch a file feed now in Google Merchant Center. Ask for any required identifiers that are missing.

Errors and limitations

Works only for data sources with a file input and fetch settings (scheduled fetch or Google Sheets); calling it on an API-type source is an error.

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

Related MCP tools

• Create an API data source — create_data_source
• Get a data source — get_data_source
• List data sources — list_data_sources

Technical details

• Impact: changes data
• Group: Data sources
• Description source: fetch_data_source registration in src/tools/datasources.ts
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