Attio REST API

REST discovered

Details

URL: https://api.attio.com
Docs: https://docs.attio.com/rest-api/overview

Authentication

OAuth 2.0 + OAuth 2.0 Authorization: Bearer <credential> discovered

OAuth 2.0 oauth2

OAuth 2.0 — self-onboarding

Point your MCP client at the server URL and approve access in the browser. The server supports OAuth Dynamic Client Registration (RFC 7591), so the client registers itself automatically — no developer-portal app, client_id, or client_secret to create.

Attio single-workspace API key bearer discovered Get token ↗

Authorization: Bearer <credential> /Authorization: Basic <credential>

For single-workspace integrations, generate an API key from the app developer settings as described in Generating an API key. Choose the scopes in the UI when creating the token. Use the resulting token as an access token for the REST API.