Installer avec Codex ou Claude Copiez ce prompt, collez-le dans Codex, Claude ou un autre assistant, puis laissez-le vérifier la page du skill et l'installer pour vous.
Une commande directe contourne le prompt de vérification. Examinez la source avant de l'exécuter.
Designed for Claude Code, also compatible with Codex and OpenClaw
PostHog Incident Runbook
Overview
Rapid incident response for PostHog integration failures. PostHog Cloud has its own status page (status.posthog.com) — the first step is always determining whether the issue is PostHog-side or your integration.
Severity Levels
Level
Definition
Response Time
Examples
P1
Analytics completely down
< 15 min
All capture calls failing, feature flags returning defaults
P2
Degraded analytics
< 1 hour
High latency, partial event loss, slow flag eval
P3
Minor impact
< 4 hours
Webhook delays, specific event type missing
P4
No user impact
Next day
Monitoring gaps, dashboard stale data
Quick Triage (Run First)
set -euo pipefail
echo"=== PostHog Triage ==="echo""# 1. Is PostHog Cloud up?echo -n "PostHog US Cloud: "
curl -sf -o /dev/null -w "%{http_code}" https://us.i.posthog.com/healthz || echo"UNREACHABLE"echo""# 2. Can we capture events?echo -n "Event capture: "
curl -sf -o /dev/null -w "%{http_code}" -X POST 'https://us.i.posthog.com/capture/' \
-H 'Content-Type: application/json' \
-d "{\"api_key\":\"${NEXT_PUBLIC_POSTHOG_KEY}\",\"event\":\"triage_test\",\"distinct_id\":\"triage\"}" || echo"FAILED"echo""# 3. Can we evaluate flags?echo -n
curl -sf -o /dev/null -w -X POST \
-H \
-d ||
[ -n ];
-n
curl -sf -o /dev/null -w \
-H ||
-n
curl -sf -o /dev/null -w ||
Is PostHog Cloud healthy (status.posthog.com)?
├── NO → PostHog outage
│ ├── Enable graceful degradation (feature flags return defaults)
│ ├── Monitor status.posthog.com for resolution
│ └── Events will be lost during outage (capture is fire-and-forget)
│
└── YES → Our integration issue
├── Are we getting 401? → API key issue (see Error 401 below)
├── Are we getting 429? → Rate limited (see Error 429 below)
├── Are events just not appearing? → Check flush/shutdown (see below)
└── Are flags returning defaults? → Check personalApiKey (see below)
Immediate Actions by Error Type
401/403 — Authentication Failed
set -euo pipefail
# Verify API key type and validityecho"Project key prefix: $(echo "$NEXT_PUBLIC_POSTHOG_KEY" | head -c 4)"echo"Personal key prefix: $(echo "$POSTHOG_PERSONAL_API_KEY" | head -c 4)"# Test project key (should return HTTP 200)
curl -s -o /dev/null -w "Capture: %{http_code}\n" -X POST 'https://us.i.posthog.com/capture/' \
-H 'Content-Type: application/json' \
-d "{\"api_key\":\"$NEXT_PUBLIC_POSTHOG_KEY\",\"event\":\"test\",\"distinct_id\":\"test\"}"# Test personal key (should return project list)
curl -s -o /dev/null -w "Admin: %{http_code}\n""https://app.posthog.com/api/projects/" \
-H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY"# Fix: If key is invalid, rotate in PostHog dashboard and update secrets
429 — Rate Limited
set -euo pipefail
# PostHog rate limits (private API only):# - Analytics endpoints: 240/min, 1200/hour# - HogQL query: 1200/hour# - Local flag eval polling: 600/min# - Capture endpoints: NO LIMIT# Immediate: Cache API responses, reduce polling frequency# Long-term: See posthog-rate-limits skill
Events Not Appearing
set -euo pipefail
# Most common cause: not calling flush/shutdown in serverless# Check 1: Is capture endpoint reachable?
curl -s -X POST 'https://us.i.posthog.com/capture/' \
-H 'Content-Type: application/json' \
-d "{\"api_key\":\"$NEXT_PUBLIC_POSTHOG_KEY\",\"event\":\"debug_test\",\"distinct_id\":\"debug-$(date +%s)\"}" | jq .
# Expected: {"status": 1}# Check 2: Verify API host is correct (common mistake)# WRONG: https://app.posthog.com (this is the UI)# RIGHT: https://us.i.posthog.com (this is the ingest endpoint)
Feature Flags Returning Defaults
// Most common causes:// 1. No personalApiKey → falls back to remote eval which may fail// 2. Flags not loaded yet → check timing// 3. Wrong project key → flags from different project// Fix 1: Add personalApiKeyconst posthog = newPostHog(process.env.NEXT_PUBLIC_POSTHOG_KEY!, {
personalApiKey: process.env.POSTHOG_PERSONAL_API_KEY, // Required for local eval
});
// Fix 2: Wait for flags in browser
posthog.onFeatureFlags(() => {
// Now flags are loadedconst value = posthog.isFeatureEnabled('my-flag');
});
Graceful Degradation Pattern
// PostHog should NEVER crash your appfunctionsafeCapture(distinctId: string, event: string, props?: Record<string, any>) {
try {
posthog.capture({ distinctId, event, properties: props });
} catch {
// Swallow error — analytics failure should never impact users
}
}
asyncfunctionsafeFlag(key: string, userId: string, fallback: boolean = false): Promise<boolean> {
try {
const result = await posthog.isFeatureEnabled(key, userId);
return result ?? fallback;
} catch {
return fallback; // Return safe default
}
}
