What are science and math APIs?

Science and math APIs provide programmatic access to scientific databases, astronomical data, chemical properties, mathematical computation engines, physics constants, and research publication metadata.

Is the NASA API free?

Yes. NASA offers several free APIs including APOD (Astronomy Picture of the Day), Mars Rover Photos, and Near Earth Object data. A free API key obtained from api.nasa.gov provides higher rate limits.

Are there free math computation APIs?

Newton API is a free open source math API for symbolic computation including derivatives, integrals, and factoring. Wolfram Alpha also provides an API with a free tier for limited computational queries.

Science & Math APIs

Scientific and mathematical data

33 APIs in this category

Showing 33 of 33 APIs

arcsecond.io

Access multiple astronomy data sources and celestial catalogs

Auth: No HTTPS CORS: Unknown

arXiv

Open access repository for research papers in physics, math, and related disciplines

Auth: No HTTPS CORS: Unknown

CORE

Global access to open access research papers and academic publications

Auth: apiKey HTTPS CORS: Unknown

GBIF

Global Biodiversity Information Facility API providing species occurrence data

Auth: No HTTPS CORS: Yes

iDigBio

Access millions of natural history specimen records from museums worldwide

Auth: No HTTPS CORS: Unknown

inspirehep.net

Information system for high energy physics literature and research data

Auth: No HTTPS CORS: Unknown

isEven (humor)

Fun API to check if a number is even

Auth: No HTTPS CORS: Unknown

ISRO

Retrieve public information about Indian Space Research Organization missions

Auth: No HTTPS CORS: No

ITIS

Integrated Taxonomic Information System for species classification data

Auth: No HTTPS CORS: Unknown

Launch Library 2

Database of spaceflight launches, agencies, and events

Auth: No HTTPS CORS: Yes

Materials Platform for Data Science

Curated experimental data and materials properties database

Auth: apiKey HTTPS CORS: No

Minor Planet Center

Astronomical data about asteroids and other small Solar System bodies

Auth: No HTTPS CORS: Unknown

NASA

Access NASA’s public data including imagery, astronomy, and satellite data

Auth: No HTTPS CORS: No

NASA ADS

NASA Astrophysics Data System for scientific publications and research data

Auth: OAuth HTTPS CORS: Yes

Newton

Perform symbolic and arithmetic mathematical calculations via API

Auth: No HTTPS CORS: No

Noctua

Access astronomical data and star catalogues via NoctuaSky API

Auth: No HTTPS CORS: Unknown

Numbers (Math.tools)

Retrieve facts, properties, and trivia about numbers

Auth: apiKey HTTPS CORS: No

Numbers API

Simple API providing random or specific facts about numbers

Auth: No HTTPS CORS: No

Ocean Facts

Scientific facts and information related to oceanography

Auth: No HTTPS CORS: Unknown

Open Notify

Public data about ISS location, astronauts, and space activity

Auth: No HTTPS CORS: No

Open Science Framework

Repository for sharing and archiving open research projects and data

Auth: No HTTPS CORS: Unknown

Purple Air

Real-time air quality monitoring data from sensors around the world

Auth: No HTTPS CORS: Unknown

Remote Calc

Solve remote math calculations using base64-encoded data input

Auth: No HTTPS CORS: Yes

Free open dataset about global research and scholarly activity

Auth: No HTTPS CORS: No

SpaceX (REST)

Public REST API providing data on SpaceX launches, rockets, and missions

Auth: No HTTPS CORS: No

SpaceX (GraphQL)

GraphQL API for querying SpaceX data on launches and vehicles

Auth: No HTTPS CORS: Unknown

Sunrise and Sunset

Calculate sunrise and sunset times for any geographic coordinates

Auth: No HTTPS CORS: No

Times Adder

Add multiple time values and return the cumulative result as JSON

Auth: No HTTPS CORS: No

TLE

Retrieve Two-Line Element (TLE) satellite orbit data

Auth: No HTTPS CORS: No

USGS Earthquake Hazards Program

Real-time earthquake data and seismic event information

Auth: No HTTPS CORS: No

USGS Water Services

Retrieve data on water quality and levels for rivers and lakes

Auth: No HTTPS CORS: No

World Bank

Access global economic, demographic, and development data

Auth: No HTTPS CORS: No

xMath

Generate and solve random mathematical expressions

Auth: No HTTPS CORS: Yes

API	Description	Auth	HTTPS	CORS
arcsecond.io	Access multiple astronomy data sources and celestial catalogs	No	✓	?
arXiv	Open access repository for research papers in physics, math, and related disciplines	No	✓	?
CORE	Global access to open access research papers and academic publications	apiKey	✓	?
GBIF	Global Biodiversity Information Facility API providing species occurrence data	No	✓	✓
iDigBio	Access millions of natural history specimen records from museums worldwide	No	✓	?
inspirehep.net	Information system for high energy physics literature and research data	No	✓	?
isEven (humor)	Fun API to check if a number is even	No	✓	?
ISRO	Retrieve public information about Indian Space Research Organization missions	No	✓	✗
ITIS	Integrated Taxonomic Information System for species classification data	No	✓	?
Launch Library 2	Database of spaceflight launches, agencies, and events	No	✓	✓
Materials Platform for Data Science	Curated experimental data and materials properties database	apiKey	✓	✗
Minor Planet Center	Astronomical data about asteroids and other small Solar System bodies	No	✗	?
NASA	Access NASA’s public data including imagery, astronomy, and satellite data	No	✓	✗
NASA ADS	NASA Astrophysics Data System for scientific publications and research data	OAuth	✓	✓
Newton	Perform symbolic and arithmetic mathematical calculations via API	No	✓	✗
Noctua	Access astronomical data and star catalogues via NoctuaSky API	No	✓	?
Numbers (Math.tools)	Retrieve facts, properties, and trivia about numbers	apiKey	✓	✗
Numbers API	Simple API providing random or specific facts about numbers	No	✗	✗
Ocean Facts	Scientific facts and information related to oceanography	No	✓	?
Open Notify	Public data about ISS location, astronauts, and space activity	No	✗	✗
Open Science Framework	Repository for sharing and archiving open research projects and data	No	✓	?
Purple Air	Real-time air quality monitoring data from sensors around the world	No	✓	?
Remote Calc	Solve remote math calculations using base64-encoded data input	No	✓	✓
SHARE	Free open dataset about global research and scholarly activity	No	✓	✗
SpaceX (REST)	Public REST API providing data on SpaceX launches, rockets, and missions	No	✓	✗
SpaceX (GraphQL)	GraphQL API for querying SpaceX data on launches and vehicles	No	✓	?
Sunrise and Sunset	Calculate sunrise and sunset times for any geographic coordinates	No	✓	✗
Times Adder	Add multiple time values and return the cumulative result as JSON	No	✓	✗
TLE	Retrieve Two-Line Element (TLE) satellite orbit data	No	✓	✗
USGS Earthquake Hazards Program	Real-time earthquake data and seismic event information	No	✓	✗
USGS Water Services	Retrieve data on water quality and levels for rivers and lakes	No	✓	✗
World Bank	Access global economic, demographic, and development data	No	✓	✗
xMath	Generate and solve random mathematical expressions	No	✓	✓

Best Science and Math APIs for Developers

A science API allows developers to access astronomical data, chemical databases, physics constants, mathematical computation services, and scientific research repositories. These APIs power educational platforms, research tools, and STEM applications.

CodeHelper's curated science and math API collection includes APIs covering astronomy, chemistry, biology, mathematics, earth science, and scientific literature.

What to look for in a science and math API

Data provenance: For scientific applications, prefer APIs sourced from authoritative institutions like NASA, NIH, or NIST.
Computation accuracy: Math APIs vary in precision; test edge cases with known results before integrating into applications requiring high accuracy.
Real-time data: For astronomical and space applications, APIs with real-time telemetry and ephemeris data provide more accurate current positions.

How to use this API directory

Browse the curated list of APIs below.
Click any API to visit its documentation.
Check the Auth column to understand what credentials you need.

Whether you are building a space exploration app or a mathematics education platform, this free curated API directory saves you hours of research.

Science & Math APIs

arcsecond.io

arXiv

CORE

GBIF

iDigBio

inspirehep.net

isEven (humor)

ISRO

ITIS

Launch Library 2

Materials Platform for Data Science

Minor Planet Center

NASA

NASA ADS

Newton

Noctua

Numbers (Math.tools)

Numbers API

Ocean Facts

Open Notify

Open Science Framework

Purple Air

Remote Calc

SHARE

SpaceX (REST)

SpaceX (GraphQL)

Sunrise and Sunset

Times Adder

TLE

USGS Earthquake Hazards Program

USGS Water Services

World Bank

xMath

Best Science and Math APIs for Developers

What to look for in a science and math API

How to use this API directory

You might be interested in

Health APIs

Environment APIs

Patent APIs