Gemini CLI M2M Sentinel m2m_get_gas_metrics

How to: Gemini CLI M2M Sentinel m2m_get_gas_metrics

client:Gemini CLI transport:streamable-http tool:m2m_get_gas_metrics

Add M2M Sentinel to Gemini CLI

01
Open ~/.gemini/settings.json and merge this in. Keep any servers already there.

{
  "mcpServers": {
    "m2m-sentinel-sdk": {
      "httpUrl": "https://api.m2msentinel.com/mcp"
    }
  }
}

02
Save the file and restart Gemini CLI.
03
Ask for something m2m_get_gas_metrics does. Gemini CLI lists the server's tools on connect and calls m2m_get_gas_metrics itself — you do not invoke it by name.
04
If nothing happens, check the server is running and that M2M Sentinel's identifier in your config matches the one above exactly.

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs

Set these first

M2M Sentinel will not start until these are set, so m2m_get_gas_metrics never becomes available.

M2M_SENTINEL_API_KEY

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.

M2M Sentinel MCP server