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Make WebFetch tool use GEMINI_SANDBOX_PROXY_COMMAND proxy when set #558

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Make WebFetch tool use GEMINI_SANDBOX_PROXY_COMMAND proxy when set #558

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4160178
feat(cli): Allow SEATBELT profiles in user settings directory
grepsuzette Sep 8, 2025
9234b78
Make WebFetch tool use GEMINI_SANDBOX_PROXY_COMMAND proxy when set
grepsuzette Sep 8, 2025
db55420
remove unwanted edit
grepsuzette Sep 8, 2025
0a40c71
remove unwanted part
grepsuzette Sep 8, 2025
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1 change: 1 addition & 0 deletions docs/tools/web-fetch.md
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Original file line number Diff line number Diff line change
Expand Up @@ -52,3 +52,4 @@ web_fetch(url="https://github.com/google/gemini-react/blob/main/README.md", prom
- **Content processing:** The tool fetches content directly and processes it using an AI model, converting HTML to readable text format.
- **Output quality:** The quality of the output will depend on the clarity of the instructions in the prompt.
- **MCP tools:** If an MCP-provided web fetch tool is available (starting with "mcp\_\_"), prefer using that tool as it may have fewer restrictions.
- **Proxy support:** The tool will use a configured proxy if available. Additionally, when `GEMINI_SANDBOX_PROXY_COMMAND` is set, the tool will automatically use the sandbox proxy which listens on `http://localhost:8877`.
7 changes: 7 additions & 0 deletions packages/core/src/tools/web-fetch.ts
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Expand Up @@ -204,9 +204,16 @@ export class WebFetchTool extends BaseDeclarativeTool<
type: 'object',
},
);

// Use the configured proxy if available
const proxy = config.getProxy();
if (proxy) {
setGlobalDispatcher(new ProxyAgent(proxy as string));
}
// If no configured proxy, check if sandbox proxy is set via GEMINI_SANDBOX_PROXY_COMMAND
else if (process.env['GEMINI_SANDBOX_PROXY_COMMAND']) {
// When GEMINI_SANDBOX_PROXY_COMMAND is set, the proxy listens on localhost:8877
setGlobalDispatcher(new ProxyAgent('http://localhost:8877'));
}
}

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