How to Choose the Best Science & Math API in 2026
There are 33 Science & Math APIs in our directory. Of these, 29 require no authentication, making them ideal for quick prototyping. 29 are rated beginner-friendly.
Last updated: April 2026
Quick Comparison: Top 10 Science & Math APIs
| Name | Auth | HTTPS | CORS | Difficulty |
|---|---|---|---|---|
| arcsecond.io | No Auth | ✓ | ? | Beginner |
| arXiv | No Auth | ✓ | ? | Beginner |
| CORE | API Key | ✓ | ? | Intermediate |
| GBIF | No Auth | ✓ | ✓ | Beginner |
| iDigBio | No Auth | ✓ | ? | Beginner |
| inspirehep.net | No Auth | ✓ | ? | Beginner |
| isEven (humor) | No Auth | ✓ | ? | Beginner |
| ISRO | No Auth | ✓ | ✗ | Beginner |
| ITIS | No Auth | ✓ | ? | Beginner |
| Launch Library 2 | No Auth | ✓ | ✓ | Beginner |
Free Science & Math APIs (No Auth)
These APIs require no API key or signup. Start using them immediately.
arcsecond.io
⭐ Beginner's Pickarcsecond.io is a free astronomy API that aggregates data from multiple space databases, including stars, planets, exoplanets, and observing sites.
arXiv
arXiv provides programmatic access to curated research-sharing platform: physics, mathematics, quantitative finance, and economics via REST API.
GBIF
⭐ Beginner's PickGBIF (Global Biodiversity Information Facility) is a free, open API providing access to hundreds of millions of species occurrence records from around the world.
iDigBio
iDigBio is a free API that gives you access to millions of digitized natural history museum specimens from institutions across the United States and beyond.
inspirehep.net
INSPIRE-HEP is a free REST API for the High Energy Physics literature database, covering papers, authors, institutions, conferences, and experiments in particle physics.
isEven (humor)
⭐ Beginner's PickisEven is a humorous free API that tells you whether a number is even or odd.
Try It in 5 Minutes: arcsecond.io
Quick implementation example using arcsecond.io.
Using curl
curl https://api.arcsecond.io/
JavaScript
const url = "https://api.arcsecond.io/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); New to APIs? Read our Getting Started Guide →
Frequently Asked Questions
How many Science & Math APIs are available?
There are 33 Science & Math APIs in our directory as of 2026.
Are there free Science & Math APIs?
Yes, 29 Science & Math APIs require no authentication and are completely free to use.
What is the easiest Science & Math API to use?
arcsecond.io is one of the easiest to get started with. It is rated as beginner-level and requires no authentication.
Do I need an API key for Science & Math APIs?
It depends. 29 APIs need no authentication, 3 require an API key, and 1 use OAuth.