Calibre MCP connects your coding agent to your RUM, CrUX and Synthetic data. Ask about any page in plain language. Your agent finds the slow element, script or deploy, and can then fix it in your codebase.
- “Why is LCP slow on
/checkout?” - “Fix the slowest interaction on
/search.” - “Did yesterday’s deploy make anything slower?”
It works with Claude Code, Cursor, Codex and GitHub Copilot, and with Claude and ChatGPT. There’s nothing to install, and it’s included on every plan.
claude mcp add --transport http calibre https://calibreapp.com/mcpYour agent only sees what you can see#
- Read-only: your agent can read the Sites your Calibre account can see, and can’t change anything.
- Admins stay in control: turn MCP off for your organisation in Manage → Settings, and review or revoke connections in Manage → Connected apps.
- Connections are recorded: on the Company plan, the audit log records when apps connect or disconnect, and changes to AI assistant access.
We don’t and won’t train AI models on your data, and we don’t send it to AI providers. MCP is an API, here if you want it: your data only reaches an AI tool when you connect one.
We’ve updated our Privacy Policy, Terms of Service, Data protection and Security pages to cover connected apps.
Read the MCP documentation to set up your agent.