cursor

Cursor adapter

Wires vouch serve into Cursor as an MCP server.

Setup

Cursor reads MCP servers from ~/.cursor/mcp.json (global) or .cursor/mcp.json (per-project). Use the per-project file so the server only loads when you're working in this repo.

{
  "mcpServers": {
    "vouch": {
      "command": "vouch",
      "args": ["serve"],
      "env": {
        "VOUCH_AGENT": "cursor"
      }
    }
  }
}

Restart Cursor. The vouch tools should appear in the Composer tool list.

.cursorrules excerpt

Add to .cursorrules:

When proposing knowledge for the project KB, use the vouch MCP tools. Every claim needs a citation. Do not skip the proposal step — durable writes require human approval via vouch approve.

Notes

• Cursor sometimes caches MCP server lists. If vouch doesn't show up, try Cmd-Shift-P → Reload Window.
• Cursor's Composer can call tools in parallel. The vouch server handles concurrent requests fine, but be aware that two proposals filed in the same Composer turn will get different ids.