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mcp/harbor
Claude Desktop

Deus Witness for Claude Desktop

io.github.sipkigroup/witness

MCP proxy: holds risky tool calls for passkey approval; signed receipts you can check offline.

client:Claude Desktop transport:stdio runtime:pypi

Install Deus Witness in Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json · windows: %APPDATA%\Claude\claude_desktop_config.json

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "witness": {
      "command": "uvx",
      "args": [
        "deus-witness"
      ],
      "env": {
        "DEUS_WITNESS_KEY": "<DEUS_WITNESS_KEY>",
        "DEUS_WITNESS_URL": "<DEUS_WITNESS_URL>"
      }
    }
  }
}

Settings → Developer → Edit Config opens this file. Restart the app after saving. Claude Desktop docs

Deus Witness in other clients

Deus Witness MCP server