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What you saw

Why it happened

There’s a separate per-IP cap (500 requests per minute) sitting on top of the per-user limit. It catches abuse, plus dev setups where lots of agents share one IP. You hit it because that IP fired too many requests across all harnesses in a 60-second window.

How to fix it

  1. Back off and retry. The window resets after a minute.
  2. Running many agents from one machine in dev? Stagger their startup so they don’t all hammer the proxy at once.
  3. On Cloud, the 500 requests/minute per-IP cap is fixed. Stagger workers as in step 2. Self-hosted, raise it with MANIFEST_IP_RATE_MAX_REQUESTS in your .env and restart. See Environment variables.