API and MCP
Use your entries from your own tools with the REST API and the MCP server (Pro).
Pro users can read and write their entries from other tools. These pages cover getting an API key, every API endpoint and connecting AI apps such as Claude Code, Cursor and VS Code with the MCP server.
- 1 API: getting started Connect your own code to Ultrathink with a device key: access, limits, errors and paging
- 2 API reference Every Ultrathink API endpoint, with its parameters, fields and replies
- 3 MCP server Connect Claude Code and other AI tools to your Ultrathink entries, comments, topics, people, views and settings