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Rate Limiting & Quota

X-RateLimit-Limit

de facto — unregistered response 4 spellings

Declared by 95 providers across 5408 published specification files in the APIs.io network.

What this header is for, and how to use it →

A count here is providers whose published contract declares this header — not providers who send it. Response headers set at the edge rarely appear in an OpenAPI at all, so a low number can measure documentation practice rather than deployment.

Spelled 4 ways

HTTP field names are case-insensitive (RFC 9110 §5.1), so every spelling below is the same header on the wire. A contract is not the wire: generated clients key off the string, and a developer reading two of these sees two different headers.

X-RateLimit-Limitx-ratelimit-limitx-RateLimit-LimitX-Ratelimit-Limit

Providers declaring it (95)

abuseipdb adapt-io akamai allowance anilist anvil api-snap apitoolkit appsmax-rest-api-v1 autoleadstar ava-protocol avito axiom-co aylien bargo-congress-trades-api bloomberg-lp bluecore brainfish cashfree celonis coasty cofactr commercetools common-room contextdev dext didit domaintools dropbox elbo-ai-inc engineering-platform eod-historical eodhd factset folk frameio getstream github gofundme gravatar green-button-alliance hakuna hellosign hex-pm imagekit intelligems kanmon limble-cmms linear logiless lucent maison-safqa-holdings-limited matter metalend microsoft-azure mixmax moengage moneris mvmnt natural-ai npr nvd opengov openmercantil opensea overshoot overshootai papaya-global pdfshift persistiq pipedream playcanvas prezent princess-beef-heavy-industries quandl relace ron-swanson-quotes sendgrid silna snapapi-pics spaceship syntage takealot the-index-fyi thenewsapi usertesting voltair weavr webflow webflow-api-and-documentation-webflow weblate wefunder zamzar zapier zoominfo

Explore

All headers Rate Limiting & Quota Guidance on headers.apievangelist.com