Cursor

Cursor supports MCP servers via its mcp.json config.

Locate the config file

OS	Path
macOS	`~/.cursor/mcp.json`
Windows	`%USERPROFILE%\.cursor\mcp.json`
Linux	`~/.cursor/mcp.json`

For project-scoped config, use .cursor/mcp.json at the repo root.

Add the MCP server

{
  "mcpServers": {
    "part3": {
      "url": "https://mcp.part3.io"
    }
  }
}

No header, no secret. Cursor discovers the OAuth endpoints automatically and opens a browser on first use to sign in and approve access.

Prime-only access

MCP is currently limited to users who are a Project Prime on at least one project, plus super-duper-admins. Non-Primes will see an access-denied page on the consent screen.

Restart Cursor

Reload the window (Cmd/Ctrl + Shift + P → Developer: Reload Window) or quit and reopen.

Verify

Open the Cursor chat panel and check the MCP servers section — part3 should be listed as connected, with tools available.

Troubleshooting

See the Claude Code troubleshooting section — the causes and fixes apply to Cursor as well.