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Windsurf Moltline Outbound Engine utm_builder

How to: Windsurf Moltline Outbound Engine utm_builder

client:Windsurf transport:streamable-http tool:utm_builder

Add Moltline Outbound Engine to Windsurf

  1. 01

    Open ~/.codeium/windsurf/mcp_config.json and merge this in. Keep any servers already there. 

{
  "mcpServers": {
    "outbound": {
      "serverUrl": "https://mcp.moltlinestudio.com/outbound"
    }
  }
}
  1. 02

    Save the file and restart Windsurf.

  2. 03

    Ask for something utm_builder does. Windsurf lists the server's tools on connect and calls utm_builder itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that Moltline Outbound Engine's identifier in your config matches the one above exactly.

Global only — Windsurf has no per-project MCP config. Refresh Cascade after saving. Windsurf docs

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.

Moltline Outbound Engine MCP server