API Directory

Discover 100 free APIs for developers

Browse, test, and integrate free and freemium APIs across many categories. No credit card required to get started.

100 APIsFree & FreemiumLive API TesterUpdated Daily
Editor's Picks
Editor's Pick
API-FOOTBALL logo

API-FOOTBALL

Sports

API-FOOTBALL by API-SPORTS is a detailed football (soccer) data API covering fixtures, live scores, leagues, standings, teams, players and statistics for hundreds of competitions.

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Editor's Pick
Hugging Face Inference API logo

Hugging Face Inference API

Artificial Intelligence

The Hugging Face Inference API runs thousands of open machine-learning models over HTTP - text generation, classification, embeddings, speech and images. Send an input with a token and get model output as JSON.

View details
Editor's Pick
Google Cloud Vision AI logo

Google Cloud Vision AI

Machine Learning

Google Cloud Vision analyses images: labels, text (OCR), faces, landmarks, logos, objects and safe-search. Send an image and get rich annotations as JSON, part of Google Cloud's AI services.

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API-FOOTBALL logo

API-FOOTBALL

Sports
Free tierAPI KeyRESTJSON

API-FOOTBALL by API-SPORTS is a detailed football (soccer) data API covering fixtures, live scores, leagues, standings, teams, players and statistics for hundreds of competitions.

#fixtures#football#live-scores
Pop
100
CORS
Marketaux Financial News API logo

Marketaux Financial News API

Finance
Free tierAPI KeyRESTJSON

Marketaux is a financial news API that tags each article with the stocks, crypto and forex entities it mentions and a sentiment score from -1 to 1, across thousands of sources.

#financial-news#fintech#marketaux
Pop
85
CORS
Quran API logo

Quran API

Religious & Spiritual APIs
FreeNo AuthRESTJSON

Al Quran Cloud is a free API for the Quran: fetch any surah, ayah or juz in Arabic, dozens of translations and tafsir editions, with audio recitations served from an open CDN. No key needed.

#audio#free-api#islamic
Pop
67
CORS
Open Food Facts API logo

Open Food Facts API

Food & Drink
FreeNo AuthRESTJSON

Open Food Facts is a free, open database of food products worldwide. Its API turns a barcode into ingredients, nutrition, Nutri-Score, allergens and images, with no API key.

#allergens#barcode#diet
Pop
58
CORS
OpenSky Network API logo

OpenSky Network API

Transportation
Free tierOAuthRESTJSON

The OpenSky Network API gives free access to live air-traffic data from a community ADS-B sensor network. Fetch real-time aircraft state vectors - position, altitude, velocity and callsign - as JSON.

#aircraft#aviation#flight-tracking
Pop
43
CORS
Hugging Face Inference API logo

Hugging Face Inference API

Artificial Intelligence
FreemiumAPI KeyRESTJSON

The Hugging Face Inference API runs thousands of open machine-learning models over HTTP - text generation, classification, embeddings, speech and images. Send an input with a token and get model output as JSON.

#ai#embeddings#huggingface
Pop
43
CORS
MusiXmatch API logo

MusiXmatch API

Music
FreemiumAPI KeyRESTJSON

Musixmatch is the world's largest lyrics catalogue with an API to search tracks and artists, match songs and fetch lyrics and metadata as JSON. The free plan offers limited lyric previews; full lyrics need a paid plan.

#karaoke#lyrics#music
Pop
41
CORS
Open Library API logo

Open Library API

Books
FreeNo AuthRESTJSON

Open Library (from the Internet Archive) is a free, no-key API to a vast catalogue of books. Search by title, author or ISBN and get works, editions, authors and cover images as JSON.

#books#education#free-api
Pop
41
CORS
Gutendex API logo

Gutendex API

Books
FreemiumNo AuthRESTJSON

Gutendex is a free JSON API for Project Gutenberg, letting developers search and browse tens of thousands of public-domain books and link straight to their download files.

#books#ebooks#free-api
Pop
32
CORS
Brave Search API logo

Brave Search API

Search
FreemiumAPI KeyRESTJSON

The Brave Search API returns web, news and related results from Brave's own independent, privacy-focused search index as JSON, for search features and AI grounding.

#ai-agents#brave#independent-index
Pop
29
CORS
Free Dictionary API logo

Free Dictionary API

Education
FreeNo AuthRESTJSON

The Free Dictionary API returns word definitions, phonetics, audio pronunciations, parts of speech, examples and synonyms as JSON - no API key, ideal for dictionary apps, games and learning tools.

#audio#definitions#dictionary
Pop
26
CORS
Abstract API logo

Abstract API

Tools & Utilities
FreemiumAPI KeyRESTJSON

Abstract API is a suite of single-purpose REST APIs - email and phone validation, IP geolocation, VAT, exchange rates and more - each returning clean JSON with its own key.

#abstract-api#email-validation#freemium
Pop
26
CORS
Picsum Photos API logo

Picsum Photos API

Tools & Utilities
FreeNo AuthRESTJSON

Lorem Picsum is a free placeholder photo service. Request any size and it returns a real stock photo - random, by id or by seed - with grayscale and blur options, straight from a URL. No key.

#free-api#images#mockup
Pop
25
CORS
Weather.gov API logo

Weather.gov API

Weather
FreeNo AuthRESTJSON

The Weather.gov API from the US National Weather Service provides official forecasts, current conditions and severe-weather alerts as GeoJSON, free and with no API key.

#alerts#forecast#free-api
Pop
23
CORS
Serper API logo

Serper API

Search
FreemiumAPI KeyRESTJSON

Serper is a fast, affordable Google Search API. Send a query and get structured Google results - organic listings, knowledge graph, answer boxes, news and images - as JSON, with free starter credits.

#ai-agents#google-search#json
Pop
22
CORS
Showing 1–15 of 100 APIs
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#1

API-FOOTBALL

Sports
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#2

Open Food Facts API

Food & Drink
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#3

Marketaux Financial News API

Finance
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#4

MusiXmatch API

Music
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#5

Open-Meteo API

Weather
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#6

Serper API

Search
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#7

Quran API

Religious & Spiritual APIs
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#8

Brave Search API

Search
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#9

AniList API

Anime
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#10

Hugging Face Inference API

Artificial Intelligence
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Zero setup

Zero Setup APIs

Quran API logo
Quran API
Religious & Spiritual APIs
No Auth
Open Food Facts API logo
Open Food Facts API
Food & Drink
No Auth
Open Library API logo
Open Library API
Books
No Auth
Gutendex API logo
Gutendex API
Books
No Auth
Free Dictionary API logo
Free Dictionary API
Education
No Auth
Picsum Photos API logo
Picsum Photos API
Tools & Utilities
No Auth
Weather.gov API logo
Weather.gov API
Weather
No Auth
DuckDuckGo Instant Answer API logo
DuckDuckGo Instant Answer API
Search
No Auth
Open-Meteo API logo
Open-Meteo API
Weather
No Auth
TheCocktailDB API logo
TheCocktailDB API
Food & Drink
No Auth
Nager.Date API logo
Nager.Date API
Calendar
No Auth
TheMealDB API logo
TheMealDB API
Food & Drink
No Auth

Free APIs for developers: the complete guide

Discover, compare and test free & freemium APIs — no credit card required.

A free API (Application Programming Interface) lets developers access data and services without paying upfront. Most ship a generous free tier — anywhere from 100 to 10,000 calls per day — so you can build, prototype, and even launch a product before committing to a paid plan. Whether you need a free weather API, a free finance API, or a free AI API, this directory helps you find one that fits in seconds.

FreeAPIHub indexes free public APIsacross many categories: AI & ML, finance, weather, maps, sports, entertainment, developer tools, and more. Every entry documents the authentication method, response format, HTTPS support, CORS policy, and rate limits — so you can evaluate fit without digging through docs.

Free vs Freemium vs Open Source

  • Free — no cost, no credit card, an always-free plan with defined rate limits.
  • Freemium — free tier with an upgrade path; paid tiers unlock higher limits or premium data.
  • Open Source — self-hostable; you control the infrastructure, privacy, and scale.

Free APIs with no API key (no authentication)

The quickest APIs to start with require no API key at all. These no-auth APIsare ideal for coding tutorials, hackathons, and demos — there's nothing to sign up for and no secret to manage. Use the No Auth filter above to list every free API you can call with a single request.

Free APIs that support CORS for frontend apps

Calling an API directly from a browser (React, Vue, Svelte, or vanilla JS)? It must return CORS headers or the request gets blocked. Filter by CORS support to surface only CORS-enabled free APIsand avoid the common "blocked by CORS policy" error in production.

How to pick & test the right API

Start with authentication: no-auth APIs are easiest to prototype with. Then check CORS support if you're calling from a browser, and confirm the rate limit fits your expected traffic. Finally, use the live API tester to verify a real response before writing a single line of integration code.

Frequently asked questions

What are the best free APIs that don't require an API key?

No-auth APIs let you make requests with zero setup — no signup, no keys. Popular no-key options include public weather, dictionary, country data, jokes, and cat/dog image APIs. On FreeAPIHub you can filter by "No Auth" to list every free API that works without authentication, perfect for quick prototypes and coding tutorials.

Can I use free APIs in a commercial or production project?

Often yes, but check the terms. "Free" APIs usually allow commercial use within a rate limit; "Freemium" APIs let you start free and upgrade as traffic grows; "Open Source" APIs can be self-hosted so you fully control scaling and uptime. Every listing shows the access type and rate limit so you can confirm fit before integrating.

How do I test a free API without writing any code?

Use the built-in live API tester. Pick an endpoint, set parameters, and send a real request straight from your browser to inspect the JSON response — no Postman, no boilerplate, no signup. It's the fastest way to verify an API returns the data you need before integrating it.

Which free APIs support CORS for frontend (browser) apps?

If you're calling an API directly from a React, Vue, or vanilla-JS frontend, it must send CORS headers or the browser will block it. Filter by CORS support to list only APIs that work client-side, so you avoid the dreaded "blocked by CORS policy" error in production.

Do free APIs have rate limits, and how do I avoid hitting them?

Almost all free tiers cap requests (commonly 100–10,000 calls/day). Each listing documents the exact limit. To stay under it, cache responses, batch requests where possible, and add a freemium upgrade path before you launch. Pick an API whose free limit comfortably covers your expected traffic.

What's the difference between a free API and a freemium API?

A free API has a permanently free plan with a fixed rate limit and no card required. A freemium API gives you a free tier to start, then charges for higher limits or premium data. Both are great for side projects; choose freemium when you expect to scale and want a clear upgrade path.