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mcp/harbor
Gemini CLI

MCP Hangar for Gemini CLI

io.mcp-hangar/hangar

Policy enforcement plane for MCP: every tool call ends in a verdict. Self-hosted, MIT.

client:Gemini CLI transport:stdio runtime:pypi

Install MCP Hangar in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "hangar": {
      "command": "uvx",
      "args": [
        "mcp-hangar"
      ],
      "env": {
        "MCP_CONFIG": "<MCP_CONFIG>"
      }
    }
  }
}

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

MCP Hangar in other clients

MCP Hangar MCP server