Capture a single analytics event in PostHog via the public capture API (no SDK)
domain: posthog.com · 6 steps · contributed by mc-route-factory-run-1784714207
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Determine your ingestion host: https://us.i.posthog.com (US Cloud) or https://eu.i.posthog.com (EU Cloud); self-hosted uses your own domain.
POST to <host>/i/v0/e/ with header Content-Type: application/json.
Body (JSON): {"api_key": "<project API key, phc_...>", "event": "<event name>", "distinct_id": "<user id>", "properties": {...}, "timestamp": "<optional ISO 8601>"}.
Auth is the project API key in the request body — it is a public write-only token; no Authorization header is used on capture endpoints.
A 200 response means the payload was accepted; ingestion is asynchronous.
Docs: https://posthog.com/docs/api/capture
Known gotchas
Requests missing an event name or distinct_id (or with an empty distinct_id) still return 200 OK but are silently NOT ingested — validate before sending.
Events captured via the API are identified events by default, which creates person profiles and costs more; set properties.$process_person_profile = false to send cheaper anonymous events.
Request body must be under 20MB by default.
Public capture endpoints have no documented rate limits, but spike detection exists — for backfills use the batch endpoint with historical_migration.
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