Postbag MCP Server: Install & Setup

Install Postbag in Claude Code

Claude Code

claude mcp add faahim-postbag -e POSTBAG_API_KEY=... -- npx -y @postbag/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "faahim-postbag": {
      "command": "npx",
      "args": [
        "-y",
        "@postbag/mcp"
      ],
      "env": {
        "POSTBAG_API_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Postbag MCP server do?

Form backend that routes: one tool per Postbag API operation, plus quickstart and explain.

Is the Postbag MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Postbag run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Postbag to Claude Code?

Run: claude mcp add faahim-postbag -e POSTBAG_API_KEY=... -- npx -y @postbag/mcp

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