
Zippopotam MCP — wraps Zippopotam.us ZIP/postal code API (free, no auth)
Streamable HTTP
https://gateway.pipeworx.io/zippopotam/mcpclaude mcp add --transport http zippopotam https://gateway.pipeworx.io/zippopotam/mcp@pipeworx/mcp-zippopotam · npm 1.1.1 · stdio
claude mcp add --transport stdio zippopotam -- npx -y @pipeworx/mcp-zippopotam@1.1.1