Public APIs with no API key

Programmatic interfaces to engage with the Microsoft Security Response Center (MSRC)

SiriKit Cloud Media

Media

Add intelligent features with Apple Intelligence, machine learning, and related technologies.

A simple IP Address API

airportsapi

Transportation

Get name and website-URL for airports by ICAO code

Twitter API

Social

Use the X API with an all-new Developer Console and consumption-based billing. No fixed monthly costs, no monthly caps.

NASA data, including imagery

EU solar radiation and photovoltaic performance estimates

xkcd

Games & Comics

Retrieve xkcd comics as JSON

U.S. National Vulnerability Database

Find location with IP address or domain

Bank holidays in England and Wales, Scotland and Northern Ireland

JSON and Plaintext API for tech-savvy sounding phrases

Another simple IP Address API

AI extraction of invoices, receipts, bank statements & contracts into structured JSON/CSV

Curated research-sharing platform: physics, mathematics, quantitative finance, and economics

Status of all DigitalOcean services

Search Services

Open Data

API for Internet Archive's Search-related services

Healthcare.gov

Health

Educational content about the US Health Insurance Marketplace

Decentralized social networking via the AT protocol

Chess.com read-only REST API

A Country, State, and City GraphQL API

Radio & Music Services

Media

We encapsulate Radio & Music business logic for iPlayer Radio and BBC Music products on all platforms. We add value by reliably providing the right blend of metadata needed by clients.

Magic: The Gathering database

Web services and data sets from the US Environmental Protection Agency