PostHog API

posthog.com

Provides programmatic access to PostHog's product analytics, feature flags, session replay, and related data via HTTP endpoints.

The PostHog API API uses api key authentication; has usage based pricing; offers a free tier (First 100K LLM events/month free (AI Observability); more than 90% of companies use PostHog for free, no credit card required). Verified 2026-07-13 with per-field source links.

Marketing Verified 2026-07-13 medium confidence

Base URL

https://us.i.posthog.com (US cloud) or https://eu.i.posthog.com (EU cloud)

posthog.com ↗

Auth

api_key

posthog.com ↗

Free tier

First 100K LLM events/month free (AI Observability); more than 90% of companies use PostHog for free, no credit card required

posthog.com ↗

Pricing model

usage_based

posthog.com ↗

Pricing

AI Observability: above 100k events, usage-based at $0.00006/event; billing limits can be set per product

posthog.com ↗

Rate limits

not documented null

no source

OpenAPI spec

not documented null

no source

MCP server

Official MCP server, install with `npx @posthog/wizard mcp add`

posthog.com ↗