30 Best Free APIs for Developers in 2026 (No Key Required)
A curated list of 30 free APIs that every developer should know about. Weather, AI, images, finance, and more — many without API keys.
- 1Curated list of 25+ free APIs across weather, AI, finance, entertainment, and more
- 2Each API includes endpoint examples, rate limits, and authentication details
- 3Covers APIs perfect for portfolio projects, hackathons, and side projects
- 4Organized by category with code snippets for quick integration
Every side project needs data, and free APIs are the easiest way to get it. I have compiled 30 APIs that are genuinely free (or have generous free tiers) and actually work well in 2026.
No API Key Required
These APIs work without any authentication — just fetch and go.
1. JSONPlaceholder
URL: https://jsonplaceholder.typicode.com
What: Fake REST API for testing — users, posts, comments, todos.
Use case: Prototyping, learning, tutorials.
2. PokeAPI
URL: https://pokeapi.co/api/v2
What: Complete Pokemon data — 1000+ Pokemon with stats, abilities, sprites.
Use case: Fun projects, learning API integration.
3. Open Trivia DB
URL: https://opentdb.com/api.php
What: Thousands of trivia questions across categories.
Use case: Quiz apps, games.
4. Dog CEO
URL: https://dog.ceo/api
What: Random dog images by breed.
Use case: Placeholder images, fun projects.
5. REST Countries
URL: https://restcountries.com/v3.1/all
What: Data for every country — population, languages, currencies, flags.
Use case: Geography apps, data visualization.
6. Advice Slip
URL: https://api.adviceslip.com/advice
What: Random life advice.
Use case: Daily advice apps, widgets.
7. Bored API
URL: https://www.boredapi.com/api/activity
What: Random activity suggestions when you are bored.
Use case: Activity finder apps.
8. IP API
URL: http://ip-api.com/json
What: Geolocation data from IP address.
Use case: Location detection, analytics.
Free with API Key (Generous Limits)
9. OpenWeatherMap
Limit: 1000 calls/day free What: Current weather, forecasts, historical data. Use case: Weather apps, dashboards.
10. NewsAPI
Limit: 100 requests/day (dev) What: Headlines from 80,000+ sources worldwide. Use case: News aggregators, trend analysis.
11. Unsplash API
Limit: 50 requests/hour What: High-quality stock photos. Use case: Image galleries, blog covers.
12. TMDB (The Movie Database)
Limit: Very generous What: Movies, TV shows, actors, reviews, images. Use case: Movie apps, recommendation engines.
13. Spotify Web API
Limit: Rate-limited but generous What: Music data, playlists, artists, albums. Use case: Music discovery apps, playlist generators.
14. GitHub API
Limit: 60 requests/hour (unauthenticated), 5000 (authenticated) What: Repositories, users, commits, issues. Use case: Developer tools, profile widgets.
15. Google Gemini API
Limit: 15 requests/minute (free) What: AI text generation, analysis, summarization. Use case: AI-powered apps, chatbots.
16. Groq API
Limit: 30 requests/minute (free) What: Fast AI inference — Llama, Mixtral models. Use case: AI apps needing fast responses.
17. Alpha Vantage
Limit: 25 requests/day What: Stock market data, forex, crypto. Use case: Finance dashboards, trading tools.
18. ExchangeRate-API
Limit: 1500 requests/month What: Currency exchange rates. Use case: Currency converters, finance apps.
19. Abstract API (Email Validation)
Limit: 100 requests/month What: Validate email addresses. Use case: Form validation, lead verification.
20. Calendarific
Limit: 1000 requests/month What: Public holidays for every country. Use case: Calendar apps, scheduling tools.
AI & Machine Learning APIs
21. Hugging Face Inference
Limit: Rate-limited free tier What: Run ML models — text generation, classification, translation.
22. Cohere
Limit: 100 API calls/minute (trial) What: Text generation, embeddings, classification.
23. Stability AI
Limit: Limited free credits What: Image generation (Stable Diffusion).
Fun & Miscellaneous APIs
24. Chuck Norris Jokes
URL: https://api.chucknorris.io/jokes/random
What: Random Chuck Norris jokes.
25. Kanye.rest
URL: https://api.kanye.rest
What: Random Kanye West quotes.
26. Numbers API
URL: http://numbersapi.com/random
What: Fun facts about numbers.
27. Deck of Cards
URL: https://deckofcardsapi.com/api/deck/new/shuffle
What: Virtual deck of cards for card game projects.
28. NASA APOD
URL: https://api.nasa.gov/planetary/apod
What: NASA Astronomy Picture of the Day.
29. Agify
URL: https://api.agify.io?name=michael
What: Predicts age from a name.
30. RandomUser
URL: https://randomuser.me/api
What: Generate random user profiles with avatars.
How to Pick the Right API
- Prototyping: Use no-key APIs (JSONPlaceholder, PokeAPI)
- Production apps: Use authenticated APIs with generous limits
- AI features: Groq or Google Gemini (both free)
- Media-heavy apps: Unsplash + TMDB
Pro Tips
- Always cache API responses to stay within rate limits
- Use environment variables for API keys (never hardcode)
- Handle errors gracefully — APIs go down sometimes
- Read the docs carefully — rate limits vary by endpoint
- Use try/catch and loading states in your UI
- If you use TypeScript, run API responses through a JSON to TypeScript converter to generate type-safe interfaces
These 30 APIs should cover most side project needs. Bookmark this page and come back whenever you start a new project!
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Written by
Ali RehmanAuthor at ByteVerse
A Full Stack Developer and Tech Writer specializing in React.js, Next.js, and modern JavaScript, sharing insights on web development, frontend technologies, backend APIs, and scalable applications.
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