APIs (207)
Datamuse API
A word-finding query engine for developers. Find words that match constraints like meaning, sound, spelling, and lexical…
Deck of Cards
A simple API for managing decks of playing cards. Create decks, shuffle, draw cards, and manage piles. All responses are…
Dicebear Avatars
Generate random pixel-art avatars. A simple and free HTTP API for generating avatar placeholders for designers and devel…
Disease Ontology API
The Human Disease Ontology API provides a RESTful interface for accessing disease-related data. The API allows users to …
Disease Ontology DO-KB API
The Human Disease Ontology API Specification. - Learn more about the [Human Disease Ontology (DO)](https://disease-ontol…
Docker Hub API
Docker Hub is a service provided by Docker for finding and sharing container images. This API provides public access to …
EBI Search API
EBI Search is a scalable text search engine that provides easy and uniform access to the biological data resources hoste…
EMBL-EBI Ontology Lookup Service (OLS) API
The Ontology Lookup Service (OLS) is a repository for biomedical ontologies that aims to provide a single point of acces…
ESPN Sports API
Unofficial public API for ESPN sports data including scores, news, team information, standings, and game summaries. This…
EarthScope/IRIS Seismic Web Services
batch_024FDSN-compliant web services providing access to seismic data including earthquake events, station metadata, and time ser…
Economia Awesome API
Free currency exchange rate API for Brazilian Real (BRL) and international currencies. Provides real-time exchange rates…
Email Verifier
Free API to validate email addresses, detect disposable emails, and check DNS/MX records without authentication. Provide…
EmojiHub API
A free REST API providing access to 1791 emojis with categorization. Allows fetching random emojis, all emojis, or filte…
Eurostat API
Eurostat REST API for accessing European statistical data. Provides access to datasets covering demographics, economy, e…
Excuser API
Generate random excuses for various situations including family, office, college, party, and more. Returns humorous excu…
FDA Device API
OpenFDA API for accessing medical device data including adverse events, classifications, 510(k) clearances, PMA approval…
FDA Open API
openFDA provides open access to public FDA data including adverse events, product recalls, drug labels, device clearance…
Faker API
A collection of completely free APIs that help web developers and web designers generate fake data in a fast and easy wa…
Fed Treasury
The U.S. Department of the Treasury Fiscal Data API provides access to federal financial data including national debt, i…
Frankfurter API
Free foreign exchange rates API providing current and historical currency exchange rates from multiple central banks and…
Free Currency Exchange API
Free currency exchange rates API by Fawaz Ahmed. Provides exchange rates for 150+ currencies including fiat and cryptocu…
French Address Search
Geocoding service providing French address search, reverse geocoding, and point of interest lookup. This is the official…
Fruityvice API
Free REST API providing nutritional information about fruits.
GDACS API
natureGlobal Disaster Alert and Coordination System API. Provides real-time disaster events including earthquakes, floods, tro…
GDELT API
Global Database of Events, Language, and Tone (GDELT) API for querying global news articles and TV transcripts. The GDEL…
Gate.io API
Gate.io cryptocurrency exchange public API for accessing market data including currencies, trading pairs, tickers, order…
Gender Data Portal
Access to gender-related development indicators from the World Bank Gender Data Portal. Provides time series data on wom…
Genderize.io
Estimates a gender from a first name. Supports single name lookups, batch requests (up to 10 names), and country-specifi…
Genderize.io API
Predict the gender of a name based on historical data. Supports single name lookup, batch processing (up to 10 names), a…
GeoJS
Free REST/JSON GeoIP API providing geolocation information for IP addresses. No API key required. Supports both IPv4 and…
GeoJS IP Geolocation API
A free IP geolocation API providing geographical information about IP addresses including country, city, coordinates, ti…
Glottolog API
Glottolog is a comprehensive catalog of the world's languages, language families, and dialects. This API provides access…
Google Books API
The Google Books API allows clients to access Google Books data including book information, full-text search, and person…
GroanDeck Dad Joke API
Searchable database of 2000+ dad jokes with free public API. No authentication required. Browse, search and filter jokes…
Gutendex API
A web API for Project Gutenberg ebook metadata. Gutendex provides access to over 70,000 free e-books with full metadata …
HackerNews
Official Hacker News API providing access to stories, comments, users, and other Hacker News data. Data is available in …
Holidays
A free API for public holidays. Get public holidays, long weekends, country information, and upcoming holidays for 100+ …
Hong Kong Obervatory
The Hong Kong Observatory (HKO) Open Data API provides access to weather information, earthquake data, and climate data …
Huobi
Huobi cryptocurrency exchange REST API for spot trading. Provides market data, reference data, and trading information.
IMF Data API
The IMF Data API provides access to International Monetary Fund economic and financial data.
IP Address Info
Free IP geolocation API providing real-time location data including country, city, region, coordinates, timezone, curren…
IPinfo
Free IP data API provider specializing in IP geolocation. Returns JSON response containing data fields describing the sp…
ITIS
The Integrated Taxonomic Information System (ITIS) Solr Web Service provides access to authoritative taxonomic informati…
ITIS Web Services
Access to the USGS Integrated Taxonomic Information System (ITIS) database. ITIS provides authoritative taxonomic inform…
Image Charts
Generate chart images via URL parameters. Supports pie charts, line charts, bar charts, radars, and more. All chart conf…
Imgflip API
Imgflip API for accessing popular meme templates and creating memes. This spec includes only the GET endpoints discovere…
Internet Archive API
cultureSearch and access digital archive content from the Internet Archive. Provides access to millions of free books, movies, …
JSONPlaceholder
A free fake REST API for testing and prototyping. Provides dummy data for posts, comments, albums, photos, todos, and us…