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Just MCP

On your first datafrey run, the CLI asks which AI client you want to connect — pick Cursor. To install (or reinstall) later: 
datafrey client cursor
Click Install in the Cursor dialog that opens, then ask Cursor about your database. On first MCP tool call, Cursor opens your browser for OAuth. Tokens refresh automatically. datafrey client cursor opens a cursor://anysphere.cursor-deeplink/mcp/install URL, which registers https://mcp.datafrey.ai/mcp in Cursor. Deeplink doesn’t work? Set up MCP JSON directly.

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MCP + Skill

To also get the /db slash command in Cursor, install the DataFrey plugin: 
datafrey client claude
The plugin is shared between Claude Code and Cursor — client claude installs it via the Claude Code marketplace, and Cursor picks it up automatically. /db behaves the same in both. Plugin source: datafrey-ai/datafrey/plugins/claude-code (works for both Claude Code and Cursor).