Free public APIs catalog

A curated list of 1000+ free, legal public APIs organized by category. Many require no auth.

Quick reference by category

Finance and crypto

CoinGecko, CoinCap, Alpha Vantage, Open Exchange Rates, FRED (Federal Reserve Economic Data)

News and media

NewsAPI, GNews, TheNewsAPI, MediaStack, New York Times API

• Headlines, RSS, aggregators, real-time sentiment

Weather and geolocation

• Open-Meteo — fully free, no API key required
• OpenWeatherMap, WeatherAPI, Visual Crossing
• Temperature, precipitation, forecasts, historical data for any coordinates

Sports

API-Football, TheSportsDB, PandaScore, ESPN API

• Results, team form, player stats, historical league data

ML and text analysis

Hugging Face Inference API, Cohere

• Classification, sentiment, summarization, embeddings — pre-trained models

Entertainment

TMDB (movies/TV), RAWG (games), MusicBrainz (music)

• Charts, ratings, metadata

Also available (in the full catalog)

Politics, law, health, science, transport, government open data

Evaluating APIs from the catalog

Field	What to check
Auth	"No" = no registration needed
CORS	Matters for browser frontend, irrelevant for backend scripts
Limits	Most free APIs have daily caps — usually enough for personal tools

Weekend project ideas

• News alerts: NewsAPI + keyword filter + Telegram bot (2-3 hours)
• Sentiment signal: News feed + Hugging Face sentiment model + score -1 to +1
• Weather dashboard: Open-Meteo + historical data + forecast for target city
• Sports aggregator: Team form, injuries, home advantage in one view

Usage tip

For any new project needing external data: check this catalog first before assuming you need a paid API. Feed the full list to an agent and ask what's useful for the specific task — it will find connections you'd miss manually.

Attribution

Based on "1000+ Free APIs That Will Replace Your Paid Subscriptions" by @qwerty on X (Mar 10, 2026). Original thread catalogs free public APIs across finance, news, weather, sports, ML, entertainment, and more, with evaluation criteria and build ideas.