mcp for Claude Code

io.github.postcept/mcp

Verify agent actions against the system of record and get signed completion receipts.

client:Claude Code transport:stdio runtime:npm

Install mcp in Claude Code

run in your project directory

claude mcp add mcp -e POSTCEPT_API_KEY=<POSTCEPT_API_KEY> -- npx -y @postcept/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs