Does Attio integrate with Claude?
Yes — official hosted MCP connector
Yes. Attio runs an official hosted MCP server, so Claude connects to your Attio workspace as a custom connector with one-click OAuth — no API keys. Claude can then look up contacts and companies, search records, read notes, and write back activity, notes and tasks, with writes requiring confirmation. It works on Claude Free, Pro, Max, Team and Enterprise; Free is limited to one custom connector.
| Integration method | Native (hosted MCP) — Attio runs an official hosted MCP server at https://mcp.attio.com/mcp. In Claude you add it as a custom connector and authorize with one-click OAuth using your existing Attio login — no API keys. Claude connects to the server from Anthropic's cloud, not your local device. |
|---|---|
| Sync direction | Two-way, on demand: Claude reads from your Attio workspace (look up contacts and companies, search records, read notes and call transcripts) and can write to it (log activity, add notes, create tasks, update records). Write operations require user confirmation before they run. |
| Plan required | On the Attio side you need an active Attio workspace. On the Claude side, custom remote-MCP connectors are available on Free, Pro, Max, Team and Enterprise plans; Free users are limited to one custom connector, and on Team/Enterprise an Owner must add the connector before members can connect. |
| Setup time | ~5 minutes unverified estimate |
How to connect Attio to Claude
- Make sure you have an active Attio workspace and a Claude plan that supports custom connectors.
- In Claude, open Settings/Customize then Connectors and click Add custom connector.
- Paste the Attio MCP URL https://mcp.attio.com/mcp and continue.
- Complete the OAuth sign-in with your Attio credentials to authorize access.
- Ask Claude to use Attio — for example look up a company or log a note — and confirm any write actions when prompted.
Known friction points
- Attio enforces per-workspace rate limits on the MCP server (for example 100 read req/sec, 25 write req/sec, 300 search req/min, and 2 req/sec for semantic search and reporting), so very high-volume bulk requests can be throttled. [source]
- On Claude Free plans only one custom connector can be added, and on Team/Enterprise plans an Owner must add the Attio connector before individual members can connect. [source]
FAQ
- Does Attio integrate with Claude?
- Yes. Attio provides an official hosted MCP server, and you add it to Claude as a custom connector with one-click OAuth. Claude can then read and write data in your Attio workspace.
- Do I need an API key to connect Attio to Claude?
- No. The connector uses OAuth — you sign in with your existing Attio credentials. No API keys are required.
- Which Claude plan do I need to add the Attio connector?
- Custom remote-MCP connectors are available on Free, Pro, Max, Team and Enterprise. Free users can add only one custom connector, and on Team/Enterprise an Owner must add it first.
✓ Last verified: 2026-06-10 · Every claim on this page links to a primary source. If the integration changed, the page is out of date — check the sources below.
Sources
- Attio Docs — MCP overview (accessed 2026-06-10)
- Claude Help Center — Get started with custom connectors using remote MCP (accessed 2026-06-10)