{"meta":{"version":"v1","pricing":{"public":{"label":"Public","description":"Read-only API access for lightweight status checks and public integrations."},"premium":{"label":"Premium (early access)","description":"API keys with higher hourly quotas are available now; webhooks, alerting, and exports are on the roadmap."}},"generatedAt":"2026-07-09T01:11:54.707Z"},"data":{"id":"incident_gfb_51YhJchdiN3Mc1542MkD","slug":"firebase-firebase-hosting-returning-unexpected-431-errors-on-some-post-requests-2025-12-20-c1542mkd","title":"Firebase Hosting returning unexpected 431 errors on some POST requests to Firebase Functions rewrites","summary":"Firebase Hosting returning unexpected 431 errors on some POST requests to Firebase Functions rewrites","status":"resolved","severity":"major","startedAt":"2025-12-20T17:00:00+00:00","updatedAt":"2026-01-07T00:22:26+00:00","resolvedAt":"2026-01-06T20:30:00+00:00","provider":{"slug":"firebase","name":"Firebase"},"affectedServices":[{"slug":"firebase-hosting","name":"Hosting"}],"links":{"html":"/incidents/firebase-firebase-hosting-returning-unexpected-431-errors-on-some-post-requests-2025-12-20-c1542mkd","api":"/api/v1/incidents/firebase-firebase-hosting-returning-unexpected-431-errors-on-some-post-requests-2025-12-20-c1542mkd","providerHtml":"/providers/firebase"},"impactSummary":"Firebase reported a medium severity event affecting Hosting.","source":{"id":"source_firebase_status","kind":"official_api","name":"Firebase Status Dashboard","checkedAt":"2026-07-09T01:10:22.415+00:00","officialUrl":"https://status.firebase.google.com","statusPageUrl":"https://status.firebase.google.com"},"updates":[{"id":"update_gfb_51YhJchdiN3Mc1542MkD_20260106t1734010000","status":"investigating","body":"POST requests against Firebase Hosting Sites with rewrites to Firebase Fuctions can occasionally return unexpected 431 errors.","createdAt":"2026-01-06T17:34:01+00:00"},{"id":"update_gfb_51YhJchdiN3Mc1542MkD_20260106t1929140000","status":"resolved","body":"The Firebase Hosting team is currently rolling out a fix. It should be available globally within a few hours.","createdAt":"2026-01-06T19:29:14+00:00"}],"access":{"plan":"public","keyed":false}}}