Callwright

Callwright runs locally from a Node.js package published to the npm registry: callwright version 1.0.4. The package starts a local server that speaks MCP over Streamable HTTP; the client then connects to it by URL. It reads these environment variables: RETELL_API_KEY (required, secret), MCP_AUTH_TOKEN (secret), PORT, CALLWRIGHT_DATA_DIR, CALLWRIGHT_PUBLIC_URL, CLAUDE_ROUTINE_URL and CLAUDE_ROUTINE_TOKEN (secret); set them in the client's configuration for this server.

Derived from the registry entry, not tested here. What the server does, and on what terms, is set by its publisher; check its repository or website before giving it access to your accounts or files. How to add an MCP server to an assistant · Before you connect