Warrant

io.github.s0fractal/warrant

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

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Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "warrant": {
      "command": "uvx",
      "args": [
        "warrant-verify"
      ],
      "env": {
        "WARRANT_KEY": "<your WARRANT_KEY>"
      }
    }
  }
}
Environment variables
  • WARRANT_KEYsecretEd25519 signing key. If unset, one is generated next to the store on the first filing and the result says so; any process that can read it can sign as this actor.

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
0.9.0
Registry
active
Published
8/1/2026

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Markdown — for your README

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Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.