API League · Rate Limits

Api League Rate Limits

API League enforces two independent ceilings and reports on only one of them. QUOTA is a daily token allowance, reported on every response through three vendor headers and enforced with HTTP 402. RATE is a per-second request ceiling plus a separate concurrency ceiling, enforced with HTTP 429 and reported through NO headers whatsoever — there is no RateLimit-Limit, no X-RateLimit-Remaining and no Retry-After. An agent can therefore see exactly how much budget it has left, but is blind to how close it is to being throttled and gets no server-directed backoff when it is.

Api League Rate Limits is the machine-readable rate-limit profile for API League on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 12 rate-limit definitions, across the Free, Rookie, Pro, and Champion tiers, measuring tokens, requests_per_minute, concurrent_requests, and requests_per_second.

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

Tagged areas include API Marketplace, Rate Limiting, Quotas, Throttling, and Tokens.

12 Limits Throttle: 429 Quota: 402
API MarketplaceRate LimitingQuotasThrottlingTokens

Limits

Daily Token Quota api-key
tokens · day
50
Request Rate api-key
requests_per_minute · minute
60
Concurrency api-key
concurrent_requests
1
Daily Token Quota api-key
tokens · day
500
Request Rate api-key
requests_per_second · second
2
Concurrency api-key
concurrent_requests
5
Daily Token Quota api-key
tokens · day
5000
Request Rate api-key
requests_per_second · second
10
Concurrency api-key
concurrent_requests
10
Daily Token Quota api-key
tokens · day
50000
Request Rate api-key
requests_per_second · second
20
Concurrency api-key
concurrent_requests
20

Policies

Concurrency is separate from rate
The provider gives a worked example: on a 2-concurrent plan, two three-second searches started in quick succession occupy both slots, and a third call errors until one finishes — even though the per-second rate was never exceeded.
Quota reset
Daily token quotas reset to zero at midnight UTC. There is no monthly quota.
Free-tier hard stop
On Free there is no overage path — once the daily quota is gone the API returns 402 until reset.

Work with this as data

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

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

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.
All 92 tools →

Call it yourself

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/api-league-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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