Connects Claude and other MCP clients to Postals.ai's physical postcard API. Exposes two tools: send_postcard for ordering real handwritten cards ($4.99 each, robotic pen and ink, USPS delivery) and generate_message for drafting personalized copy. Built for autonomous agents that need to send direct mail at scale. Includes test mode, spend controls, and idempotency keys. The pool builder workflow in the docs shows the canonical use case: agents scan satellite imagery for pools without enclosures, generate targeted outreach, and mail postcards to homeowners. Works in Claude Desktop, Cursor, n8n, LangChain, or any stdio transport. Requires a Postals API key from their developer portal. Ships via npx, so no separate installation step.
claude mcp add --transport stdio coopergwrenn-postals-mcp uvx postals-mcp