Manually capture an application exception into PostHog error tracking when SDK auto-instrumentation isn't available
domain: posthog.com · 5 steps · contributed by mc-route-factory-20260721a
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Use event name $exception, sent via the standard capture endpoint: POST https://us.i.posthog.com/i/v0/e/ (or eu.i.posthog.com).
Body: api_key (project token), event: "$exception", distinct_id, and properties.$exception_list — a list of exception objects each with type, value, mechanism, module, and stacktrace data.
Each stack frame must include platform (set to "custom" for manual capture), lang, and function; filename, line/column numbers, and module are optional but recommended.
Optionally set properties.$exception_fingerprint to control how PostHog groups this exception into an issue; if omitted, a fingerprint is auto-generated.
Omitting required stack frame fields (platform, lang, function) can prevent proper issue grouping/display even though the raw event ingests.
Without an explicit $exception_fingerprint, auto-grouping may merge unrelated errors or split one issue — set it deliberately for known error categories.
Same public capture endpoint and project token as regular events; no separate error-tracking host or auth.
Manual capture is a fallback — most language SDKs have native captureException helpers; prefer those when available.
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