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mcp/harbor
Verified official

Countersign MCP

v1.0.0

ai.llpro.countersign/countersign

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

transport:streamable-http tools:3
Website

Target client

run in your project directory 

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

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

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

countersign_stamp

countersign stamp

countersign_verify

countersign verify

countersign_log

countersign log

All 3 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.