Apollo API

REST discovered

Details

URL: https://api.apollo.io/api/v1
Docs: https://docs.apollo.io/reference

Authentication

Apollo API key api_key discovered Get key ↗

In Apollo, go to Settings > Integrations > API Keys or open the Apollo developer dashboard. Click API Keys > Create new key, choose the endpoint permissions for the key (or enable Set as master key for full access), then copy the key and store it securely. Access depends on your Apollo plan.

OAuth 2.0 oauth2 discovered

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.