name: Numbers API Plans and Pricing
description: Pricing plans available for the Numbers API service.
url: http://numbersapi.com/
plans:
  - name: Free
    description: The Numbers API is completely free to use with no tiers, no authentication required, and no formal rate limits. It operates as a community resource on a best-effort basis.
    price: 0.00
    currency: USD
    unit: month
    rateLimit: unlimited
    authentication: none
    features:
      - No API key required
      - No signup required
      - Access to trivia, math, year, and date fact endpoints
      - Plain text and JSON response formats
      - Random fact endpoint
      - Fallback witty responses when specific fact is unavailable
      - Consistent/static responses suitable for caching
notes: >
  The Numbers API has no documented paid tier. It is a free, open community service
  created by David Hu and Mack Duan. Caching is recommended to reduce load.
  The service operates over HTTP only (not HTTPS); HTTPS consumers should proxy
  requests through a backend server.