Keygen · Rate Limits

Keygen Rate Limits

Keygen enforces sliding-window rate limits that differ by whether requests originate client-side (unauthenticated, license, or user tokens) or server-side (admin, environment, or product tokens). Client-side traffic is the more constrained tier - roughly a 60-request burst per 30 seconds with a sustained ceiling around 500 requests per 5 minutes - while server-side tokens receive substantially higher, undocumented ceilings suited to back-end automation. Limits and the current window are surfaced on every response via X-RateLimit-* headers, and throttled requests return 429 with a Retry-After header.

Keygen Rate Limits is the machine-readable rate-limit profile for Keygen on the APIs.io network, in the API Commons Rate Limits shape.

It captures 4 rate-limit definitions, measuring requests.

Limit state is signalled in the X-RateLimit-Window, X-RateLimit-Count, X-RateLimit-Limit, and X-RateLimit-Remaining response headers, and an exhausted limit returns HTTP 429.

This profile was written by API Evangelist and has not been verified against a page the provider published; treat every limit as unconfirmed until a dated transcription replaces it.

The profile also includes 3 backoff/retry policies defined and response codes documented for throttled.

Tagged areas include Software Licensing, Distribution, Rate Limiting, Quotas, and Throttling.

4 Limits Exhausted: HTTP 429 X-RateLimit-WindowX-RateLimit-CountX-RateLimit-LimitX-RateLimit-Remaining
Method: generated, dated 2026-07-01.
Written by API Evangelist on 2026-07-01 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
View Source
Software LicensingDistributionRate LimitingQuotasThrottling

Limits

Client-Side Burst ip-or-token
requests · per 30s
60/30s
Applies to unauthenticated, license, and user (client-side) tokens.
Client-Side Sustained ip-or-token
requests · per 5m
500/5m
Sustained ceiling (~1 req/sec) for client-side tokens; short bursts allowed.
Server-Side token
requests · per sliding
see provider documentation/sliding
Admin, environment, and product tokens receive higher, undocumented limits.
Enterprise Custom account
requests · per custom
negotiated/custom
Custom rate limits available on Keygen Cloud Enterprise plans.

Policies

Backoff Strategy
Honor the Retry-After header and use exponential backoff with jitter on 429.
Header Monitoring
Read X-RateLimit-Remaining / X-RateLimit-Reset to throttle proactively before hitting 429.
Caching
Cache validation and metadata responses and use offline license check-out to reduce request volume.

Sources

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

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Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
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Call it yourself

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curl "https://apis.io/api/v1/rate-limits/keygen-rate-limits"
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curl "https://apis.io/api/v1/rate-limits?limit=25"

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