- Symptom
- 429 rate_limited on a single integration at moderate sustained volumeRetry-After no longer exceeds 60 secondsFree and Plus workspaces throttle at a lower rate than Business or Enterprise
- Cause
- Since September 9, 2026, the per-connection limit is enforced over a fixed 60-second window: 600 requests per minute on Business and Enterprise, 180 per minute on all other plans. The wait is also repeated in the body as additional_data.retry_after.
- Fix
- Pace requests to the plan's per-minute budget, and honor Retry-After or additional_data.retry_after on 429 and 529. Check additional_data rate_limit_reason to tell a workspace limit from an endpoint limit.
- Apply
Throttle to <=180 req/min (non-Business plans) or <=600 req/min (Business/Enterprise); on 429 sleep for Retry-After or additional_data.retry_after seconds- Affected
- All API versions, from 2026-09-09
- Sources
Last verified 2026-10-17 · Confirmed by 0 builders