published

Numbers API

Numbers API provides developers with free access to trivia and facts about numbers, suitable for applications, games, and educational projects.

Developed by NumbersAPI

View Source
99.95%Uptime
150msLatency
1.9kStars
No AuthAuth
NoCredit Card
RESTStyle
v1Version
API Endpoints

Reference for available routes, request structures, and live examples.

Returns a random trivia fact about any number.

Full Endpoint URL
http://numbersapi.com/random/trivia
Implementation Example
curl -X GET 'http://numbersapi.com/random/trivia' \
  -H 'Authorization: Bearer YOUR_API_KEY'
Expected Response
"42 is the answer to the ultimate question of life, the universe, and everything."
Version:v1
Real-World Applications
  • Integrating trivia facts into mobile apps and gamesOptimized Capability
  • Enriching educational websites with number-based factsOptimized Capability
  • Powering daily fact widgetsOptimized Capability
  • Creating Slack or Discord trivia botsOptimized Capability
  • Enhancing math learning tools with fun contextOptimized Capability
Advantages
  • ✓ No authentication needed – instant access
  • ✓ Completely free with a generous rate limit
  • ✓ Simple, intuitive RESTful endpoints
  • ✓ Supports plain text and JSON responses
Limitations
  • ✗ No user authentication or api key management
  • ✗ Limited to trivia and facts only (not computation or advanced math)
  • ✗ No official SDKs or client libraries
  • ✗ Error responses are minimal and not fully structured

FAQs

API Specifications

v1
Pricing Model
Free
Credit Card
Not Required
Response Formats
JSON, text
Supported Languages
7 Languages
SDK Support
REST Only
Time to Hello World

Less than 5 minutes

Rate Limit

1000 requests/hour/IP

Free Tier Usage

1000 requests per hour per IP, no signup or credit card required.

Use Case: Best For

Developers building educational or trivia experiences needing instant, free, and fun number facts.

Not Recommended For

Projects requiring user-specific data, authentication, or advanced math operations.

Resources

Documentation Official Website Source Code Pricing Details Postman Collection
#education#facts#numbers

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