PostHog API

REST discovered

Details

URL: https://us.posthog.com
Docs: https://posthog.com/docs/api.md

Authentication

Personal API key bearer discovered Get token ↗

Authorization: Bearer <credential> /personal_api_key=<credential>

In PostHog, open Personal API keys, click + Create a personal API Key, choose scopes, and copy the key immediately. For MCP-specific manual setup, PostHog also links a preset at user API keys with MCP preset.

OAuth 2.0 oauth2 discovered

Authorization: Bearer <credential>

OAuth 2.0 — self-onboarding

Point your MCP client at the server URL and approve access in the browser. The server accepts a Client ID Metadata Document (CIMD), so the client authenticates with its own hosted URL as the client_id — nothing to register.

Project API token api_key discovered Get key ↗

token=<credential>

Open your project's settings in PostHog at Project settings and copy the project token. PostHog uses this token for public ingestion and feature-flag evaluation endpoints; it is sent in the request payload rather than as a Bearer token.