sync token is no longer valid, a full sync is required.

Google Calendar API · GET /calendar/v3/calendars/{calendar_id}/events · HTTP 410

Status: ✅ verified:server:prod · first seen 2026-10-24 · last confirmed 2026-10-27 · 33 confirmations from 2 vantages

A syncToken the server does not know, even a made-up string, returns HTTP 410 Gone (reason fullSyncRequired), not 400.

What to do

1. Omit query parameter syncToken.

Dimensions

env: prod · plan: any · region: any · account_state: api_key

Evidence

Probe af:google-calendar:probe:sync-token-errors (declarative, source)

Observations: none from reporters yet.

Machine access

curl -s https://apifacts.dev/v0/check \
  -H 'content-type: application/json' \
  -d '{"target":{"method":"GET","url":"https://www.googleapis.com/calendar/v3/calendars/{calendar_id}/events"},"error":{"status":410,"body_excerpt":"sync token is no longer valid, a full sync is required."}}'

YAML: facts/google-calendar/unknown-sync-token-410.yaml

Data: CC BY 4.0 · apifacts registry · This page is generated; edit the YAML, not the page.