LocalFree

Warrant MCP server

s0fractal/warrant

Record an agent's decisions with reasons anyone can re-execute offline — verify recomputes them.

5 GitHub stars
Source code

Install Warrant in Claude Code

Claude Code
claude mcp add warrant -- uvx warrant-verify
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "warrant": {
      "command": "uvx",
      "args": [
        "warrant-verify"
      ]
    }
  }
}

Frequently asked questions

What does the Warrant MCP server do?

Record an agent's decisions with reasons anyone can re-execute offline — verify recomputes them.

Is the Warrant MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Warrant run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Warrant to Claude Code?

Run: claude mcp add warrant -- uvx warrant-verify

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