API Finder
Discover 1000+ free public APIs for your next project. Search, filter, and integrate instantly with complete documentation.
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About API Finder
An API Finder is an essential developer tool that helps you discover and integrate free public APIs into your projects with ease. Whether you're building a weather application, integrating payment processing systems, adding social media features to your platform, or creating data-driven applications, our comprehensive database of 1000+ APIs across 50+ diverse categories makes it simple to find exactly what you need for your development work.
Say goodbye to endless Google searches, outdated API lists, and fragmented documentation. Our API Finder provides up-to-date, real-time information about authentication requirements (No Auth, API Key, OAuth, User-Agent), HTTPS encryption support, CORS compatibility for browser applications, detailed API descriptions, and direct links to official documentation. Every API in our directory includes comprehensive technical specifications, making it easy to evaluate options before integration.
Perfect for web developers, mobile app creators, data scientists, and software engineers working across platforms including JavaScript, Python, Java, PHP, Ruby, Go, and more. Our API Finder supports development for popular social platforms like Twitter, Instagram, Facebook, and GitHub, business tools, entertainment services, financial data providers, weather services, mapping solutions, and countless other categories. Whether you need real-time data, historical information, or specialized functionality, discover APIs that power modern applications.
The tool features advanced filtering capabilities allowing you to search by category (Weather, Finance, Sports, News, Entertainment, Social Media, Music, Games, Health, Science, Transportation), authentication requirements, security features, and technical specifications. With instant client-side search, privacy-first design, and no registration required, you can start discovering and integrating APIs within minutes. Find RESTful APIs, GraphQL endpoints, WebSocket connections, and more - all documented and ready to use in your next project.
Key Features of API Finder
Everything you need for professional api finder
Smart Search
Instantly search through 1000+ APIs by name, description, or category. Find exactly what you need with our intelligent search algorithm that understands developer terminology.
Advanced Filtering
Filter APIs by category, authentication type, HTTPS support, and CORS compatibility. Narrow down results to find APIs that match your exact technical requirements.
Authentication Details
See authentication requirements at a glance - No Auth, API Key, OAuth, or User-Agent. Choose APIs that match your security and implementation preferences.
Direct Documentation
Every API includes a direct link to official documentation. Access integration guides, code examples, SDKs, and API references with a single click.
Instant Results
Lightning-fast client-side filtering means instant results as you search and filter. No waiting, no loading - just immediate API discovery.
Privacy First
All searches happen in your browser. We don't track your searches, save your history, or collect any data. Your API research is completely private.
How to Use API Finder
Follow these simple steps to get started
Search or Browse
Use the search bar to find specific APIs or browse by category. Filter by authentication type, HTTPS support, or CORS compatibility to narrow results.
Review Details
Click on any API to view detailed information including description, authentication requirements, technical specifications, and what makes it unique.
Integrate & Build
Click the documentation link to access official integration guides. Copy API details, follow the documentation, and start building your project immediately.
Pro Tips
- Use No Auth Filter: Start with APIs that require no authentication for quick prototyping and testing before implementing OAuth or API keys.
- Check HTTPS Support: Always prefer HTTPS-enabled APIs for secure data transmission, especially when handling sensitive user information.
- Test Before Production: Try APIs in development first to check rate limits, response times, and data quality before going live.
- Read Documentation Carefully: Each API has unique usage limits and terms. Always review the official docs before commercial use.
- Bookmark Your Favorites: Keep a list of useful APIs for future projects. Many developers build with the same trusted APIs repeatedly.
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Frequently Asked Questions
Everything you need to know about API Finder
Is the API Finder really free?
Yes! Our API Finder is 100% free with no hidden costs, no registration required, and unlimited searches. All APIs listed in our directory are also free public APIs that you can use in your projects without any fees.
How many APIs are available in the directory?
Our API Finder provides access to 1000+ free public APIs across 50+ categories including weather, finance, social media, entertainment, sports, news, and many more. The database is regularly updated with new APIs from trusted sources.
What information is provided for each API?
For each API, we provide the API name, a clear description of what it does, category classification, authentication requirements (No Auth, API Key, OAuth, User-Agent), HTTPS support status, CORS support status, and direct links to official documentation.
Can I filter APIs by authentication type?
Absolutely! You can filter APIs by authentication requirements including No Auth (no authentication needed), API Key (requires registration for a key), OAuth (requires OAuth flow), and User-Agent (requires user agent header). This helps you find APIs matching your implementation needs.
What does HTTPS and CORS support mean?
HTTPS ensures secure, encrypted communication with the API, protecting data in transit. CORS (Cross-Origin Resource Sharing) support means you can call the API directly from browser-based applications without server-side proxying. Our filters help you find APIs with these important security features.
Are the APIs in the directory reliable?
We curate our API directory from trusted sources like public-apis.org and verify entries when possible. However, API availability and performance can vary as they're maintained by third parties. We recommend testing APIs in development before production use.
Can I use these APIs in commercial projects?
Most APIs in our directory can be used in commercial projects, but each API has its own specific terms of service. Always review the API's official documentation and terms before using it in production. Some APIs may have rate limits or require attribution.
How do I integrate an API into my project?
Click the documentation link for any API to access official integration guides. Most APIs provide SDKs, code examples, and detailed documentation for various programming languages. Our API Finder helps you discover APIs - integration details come from each API's official docs.
What categories of APIs are available?
We offer 50+ categories including Weather, Finance, Sports, News, Entertainment, Social Media, Music, Games, Books, Food, Health, Science, Transportation, Government, Education, Business, Animals, Anime, Art & Design, and many more specialized categories.
Do I need an API key for all APIs?
No! Many APIs in our directory require no authentication at all. Use our "No Auth" filter to find APIs you can start using immediately without any registration, API keys, or authentication setup. These are perfect for quick prototyping and testing.
Can I suggest new APIs to add to the directory?
Yes! We welcome API suggestions from the developer community. Contact us through our support channels with the API name, description, and documentation link. We review all submissions and regularly add high-quality public APIs to keep our directory current.
Is my search history saved?
No, we respect your privacy completely. All searches and filters are performed client-side in your browser. We don't track, save, or share your search history, queries, or API selections. Your API research is 100% private and never leaves your device.
Still need help?
Can't find what you're looking for? Our support team is here to assist you.
Contact Support