PieterPost MCP

PieterPost MCP is a Model Context Protocol server that bridges the gap between AI agents and traditional postal mail. It allows AI assistants to send physical letters, postcards, and packages programmatically through PieterPost's mail service. The tool is designed for developers and AI enthusiasts who want to give their agents the ability to interact with the physical world via mail. To use it, you connect the MCP server to your AI application (e.g., Claude Desktop, custom agents). Once connected, the AI can call functions like send_letter or send_postcard, passing recipient details and content. PieterPost handles printing, envelope insertion, stamping, and posting through the USPS. What sets PieterPost MCP apart is its focus on simplicity and integration with the MCP ecosystem. It requires minimal setup and provides a straightforward API for mail dispatch. However, it currently only supports mail delivery within the United States and has limited customization options. The tool is ideal for developers building physical mail capabilities into their AI workflows, such as sending automated thank-you notes, reminders, or marketing materials. It enables AI agents to perform tasks that were previously impossible without human intervention.