Numbers
Number of the day, random number, number facts and anything else you want to do with numbers
- Authentication
- API Key
- HTTPS
- Yes
- CORS
- No
- Category
- Science & Math
- Data source
- public-apis + marcelscruz
- Documentation / URL
- https://math.tools/api/numbers/
Overview
Numbers (math.tools) provides number data — key-based (the API responds even without a valid key, verified).
Quick Start
Number of the day (replace YOUR_KEY):
curl "https://api.math.tools/numbers/nod?key=YOUR_KEY"{ "success": { "total": 1 }, "copyright": { "copyright": "2019-21 https://math.tools" }, "contents": { "nod": { "category": { "name": "number" } } } }Authentication
- Register at math.tools → API key.
- Send it as the
keyquery parameter.
Rate Limits & Notes
- Free tier with limits (check the docs); paid plans scale.
- Number facts.
FAQ
Is Numbers free? Free tier with limits; more is paid.
Does it work without a key? It responds with data even with an invalid key (verified) — but use a real key for reliable access.
What’s the auth style?
key query parameter.
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|---|---|---|---|---|
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