Postbag

Connect Runs on your machine

claude mcp add postbag -e POSTBAG_CODEX=<POSTBAG_CODEX> -- uvx postbag==2.3.0

{
  "mcpServers": {
    "postbag": {
      "command": "uvx",
      "args": [
        "postbag==2.3.0"
      ],
      "env": {
        "POSTBAG_CODEX": "<POSTBAG_CODEX>"
      }
    }
  }
}

{
  "mcpServers": {
    "postbag": {
      "command": "uvx",
      "args": [
        "postbag==2.3.0"
      ],
      "env": {
        "POSTBAG_CODEX": "<POSTBAG_CODEX>"
      }
    }
  }
}

{
  "servers": {
    "postbag": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "postbag==2.3.0"
      ],
      "env": {
        "POSTBAG_CODEX": "<POSTBAG_CODEX>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

Details

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