specification: API Commons Rate Limits
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/RateLimits
provider: FXRatesAPI
providerId: fxratesapi
created: '2026-07-12'
modified: '2026-07-12'
reconciled: false
tags:
- Foreign Exchange
- FX
- Currency
- Exchange Rates
- Rate Limiting
- Quotas
description: >-
  FXRatesAPI meters usage primarily by a monthly request quota that scales with
  the subscription tier (free vs paid), rather than by a documented
  requests-per-second burst limit. The free tier is confirmed usable without an
  API key. Specific per-tier monthly request counts and any short-window burst
  limits are NOT reconciled in this artifact because the pricing and usage pages
  are client-rendered and require sign-in to read exact values.
notes: >-
  reconciled=false. Verify the monthly request quota per tier and any burst /
  per-second limits on the fxratesapi.com/pricing and /docs/endpoints/usage
  pages during reconciliation. No 429 behavior was triggered or confirmed during
  read-only probing.
sources:
- https://fxratesapi.com/pricing
- https://fxratesapi.com/docs/endpoints/usage
responseCodes:
  throttled: 429
limits:
- name: Monthly Request Quota
  scope: account
  metric: requests
  limit: see provider documentation
  notes: Capped monthly request allowance that scales by subscription tier; exact per-tier values not reconciled.
policies:
- name: Tiered Quotas
  description: Monthly request allowance increases from the free tier through paid subscription tiers.
- name: Backoff Strategy
  description: Clients should implement exponential backoff with jitter and honor any Retry-After header on 429 responses.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com