Countersign for Claude Code

ai.llpro.countersign/countersign

Independent, signed check of AI work: math, quotes, sources, links, code. Public verifiable log.

client:Claude Code transport:streamable-http tools:3

Install Countersign in Claude Code

run in your project directory

claude mcp add --transport http countersign https://countersign.llpro.ai/mcp

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