# Attio documentation Research date: 2026-09-07 Documentation coverage: partial. Reference index, not a mirror of complete vendor documentation. Retrieved pages do not prove the MCP works. ## What it does A CRM built around a flexible, user-defined data model (not fixed contact/company/deal objects) with real-time sync and an API-first architecture. ## Access and connection MCP support: official Access requirements: free - the Free plan (up to 3 seats) includes API access, rate-limited (~1,000 calls/hour). Paid tiers: Plus $29/user/mo, Pro $69/user/mo, Enterprise custom. Authentication: OAuth - one-time login as the user's own Attio account, no API key needed. Reads auto-approve; writes require confirmation. Permissions mirror whatever the logged-in user already has in the workspace. Research checked: 2026-09-07 These details come from catalog research. Check vendor sources for current setup instructions; this is not proof of a tested connection. ## Sources - https://docs.attio.com/mcp/overview - https://mcp.attio.com/ - https://attio.com/pricing - https://mcp.attio.com/mcp ## Retrieved pages - https://docs.attio.com/mcp/overview (fetched)