Web fetch tool (`web_fetch`)

The web_fetch tool allows the Gemini agent to retrieve and process content from specific URLs provided in your prompt.

Technical reference

The agent uses this tool when you include URLs in your prompt and request specific operations like summarization or extraction.

prompt (string, required): A request containing up to 20 valid URLs (starting with http:// or https://) and instructions on how to process them.

Confirmation: Triggers a confirmation dialog showing the converted URLs.
Plan Mode: In Plan Mode, web_fetch is available but always requires explicit user confirmation (ask_user) due to security implications of accessing external or private network addresses.
Processing: Uses the Gemini API's urlContext for retrieval.
Fallback: If API access fails, the tool attempts to fetch raw content directly from your local machine.
Formatting: Returns a synthesized response with source attribution.