writ MCP Server: Install & Setup

Install writ in Claude Code

Claude Code

claude mcp add writ -e WRIT_API_KEY=... -- uvx writ-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "writ": {
      "command": "uvx",
      "args": [
        "writ-mcp"
      ],
      "env": {
        "WRIT_API_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the writ MCP server do?

Commit-time policy checks for AI agent writes (ALLOW/DENY/STEP_UP) with a tamper-evident audit log.

Is the writ MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does writ run locally or remotely?

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

How do I add writ to Claude Code?

Run: claude mcp add writ -e WRIT_API_KEY=... -- uvx writ-mcp

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