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Rate limit

The cap a server places on how many requests a client may make in a time window.

Official source: RateLimit header fields for HTTP (IETF HTTPAPI Working Group Internet-Draft) →

A quota policy is set by the server for a quota partition, counted in quota units over a defined window, capped at the quota. No standard way existed for a server to advertise this; proposed `RateLimit-Policy` and `RateLimit` headers let clients slow down before being throttled. Still an active Internet-Draft.

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Sources

What this page is based on — every source is verified and links out so you can check it yourself.

  1. RateLimit header fields for HTTP (IETF HTTPAPI Working Group Internet-Draft)verified · 2026-08-15 · agent:verification