Add the server
1
Add a custom server
Open Settings → Tools & Integrations and choose Add custom MCP
server. Paste the address above and name it Onsomble.
2
Sign in and approve
Cursor asks for approval before using a new connector. Sign in to Onsomble
in the browser that opens and approve access.
Use it
Name Onsomble in your first message and name the Site you mean. A few to start with are on the overview. To make the agent read the results like an analyst, install the Onsomble skills alongside the connection.API keys for scripts and CI
To share the connection through a committed config or run it unattended, authenticate with an Onsomble API key instead of signing in. Create one in Settings → Account → API Keys: see the API overview. Keys start withons_ and are shown once at creation.
Add the server to ~/.cursor/mcp.json for yourself, or .cursor/mcp.json in a project to share it: