Free Public APIs

A collection of 311 Free Public APIs for Students and Developers.

Tested every single day.

Environment

APIs to help you go green—because saving the planet starts with the right data.

📈Enigma Business Data API

The Enigma Business API delivers data on over 30 million U.S. merchants.

It provides detailed business profiles, financial insights, transaction data, and compliance information such as corporate registrations and risk signals.

This API empowers developers to enhance decision-making and integrate comprehensive business data into their applications.

🌍Free Elevation API

This API provides access to elevation data for any point on Earth without any cost. Users can retrieve elevation information by making GET requests with latitude and longitude parameters.

2 Endpoints

95 API Health

🇨🇳Chinese Holiday Calendar

This API provides a comprehensive listing of public holidays in China for the year 2024. It includes the date, name of the holiday, and whether it is an off day or not.

1 Endpoint

95 API Health

🌍Carbon Intensity API

Official API for Carbon Intensity in Great Britain provided by National Grid. Allows access to current and historical carbon intensity data for different regions and time periods.

4 Endpoints

95 API Health

📊openSenseMap API

The openSenseMap API allows for managing users, senseBoxes (stations), and measurements, providing functionalities such as posting new data, retrieving sensor information, and managing senseBoxes. It also supports various operations with parameters for filtering and formatting responses, including JSON and CSV formats.

1 Endpoint

95 API Health

🚀speedscale.com

Speedscale is a cloud-based API testing and observability platform designed to help developers and DevOps teams automate the process of testing and validating their APIs.

🌞Free UV Index API

Provides real-time UV Index and 5 day Hourly UV Index Forecast globally without API Key. Single endpoint for current UV Index and forecast based on latitude/longitude.

1 Endpoint

89 API Health

🏙️Hong Kong CSDI

The Hong Kong CSDI Portal provides access to a range of geospatial data and applications aimed at supporting data sharing and government initiatives. It centralizes resources for spatial data, making it easier for users to find and utilize geographic information.

1 Endpoint

80 API Health

🌍Website Carbon API

Calculates website carbon emissions per page view using real-time tests. Provides endpoints for testing and manual calculations.

1 Endpoint

75 API Health

🌍OpenAQ Platform

Largest open-source air quality data platform aggregating historical and real-time air quality data globally.

2 Endpoints

44 API Health

📬postali API REST

API REST for retrieving postal code information for Mexican addresses

2 Endpoints

25 API Health