Welcome to the Public APIs Collection – a beautifully curated list of free, publicly available APIs, created by the talented API Fellows from our API Fellowship Program. This repository is a comprehensive resource designed to empower developers with access to powerful third-party services without spending a dime.
Whether you're building an MVP for your startup, learning to code, or hacking on a side project, these APIs offer a wide range of capabilities - from real-time collaboration and AI-powered chatbots to social media integrations and weather data.
This collection is the result of dedicated research by our API Fellows, who explored, tested, and documented these APIs to make them easily accessible for themselves and the broader developer community. Dive in and discover tools that can elevate your next project!
We welcome contributions from the community! Here's how you can help:
- Fork this repository
- Add your API to the appropriate section following our format
- Ensure the API is free to use (with or without registration)
- Test that the API is working and accessible
- Submit a pull request with a clear description
- APIs must be publicly accessible and free to use
- Include accurate descriptions and authentication requirements
- Maintain the table format for consistency
- Verify all links are working before submitting
These APIs can significantly enhance your projects and provide professional-grade features:
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Liveblocks | Real-time collaboration infrastructure for building live cursors, comments, presence indicators, and collaborative editing featuresPerfect for building collaborative whiteboards, document editors, design tools, or any app requiring real-time user interaction. Provides WebSocket connections, conflict resolution, and user presence out of the box. |
API Key | Easy |
| PusherKit | Real-time messaging and live updates for web and mobile applicationsAdd real-time chat, live notifications, activity feeds, and collaborative features to your apps. Great for building messaging apps, live dashboards, and real-time games. |
API Key | Easy |
| OpenWeatherMap | Weather data and forecastsGet current weather, forecast, and historical weather data. Useful for weather dashboards, travel apps, or agricultural apps. Provides data by city, coordinates, and zip. |
API Key | Easy |
| News API | Get latest news articles from various sourcesBuild news aggregators, sentiment analysis tools, or topic-based feed readers. Fetch breaking news headlines, articles by category, or specific publications worldwide. |
API Key | Easy |
| JokeAPI | Programming and general jokesRetrieve jokes in categories like programming, puns, or dark humor. Can return single or two-part jokes. Great for entertainment bots and fun apps. |
No | Easy |
| OpenAI API | Access to GPT models for building AI-powered chatbots, content generation, and intelligent applicationsBuild ChatGPT-like interfaces, content generators, code assistants, and smart automation tools. Includes text generation, image creation, and code completion capabilities. |
API Key | Medium |
| Gemini API | Google’s powerful large language model API for AI chatbots, content generation, reasoning, and moreUse Gemini for building smart assistants, content generators, summarizers, and more. Supports text, image, and code input with Gemini Pro Vision. Accessible via Google AI Studio with a free tier. |
API Key | Medium |
| GitHub API | Comprehensive access to GitHub's features for building developer tools and integrationsCreate code portfolio sites, automated deployment tools, issue trackers, code analysis tools, and development dashboards. Access repositories, commits, issues, and user data. |
OAuth/Token | Medium |
| Stripe API | Complete payment processing solution for e-commerce and subscription applicationsHandle payments, subscriptions, invoicing, and financial operations in your applications. Supports multiple payment methods and currencies with robust security. |
API Key | Medium |
| Twilio API | Communication APIs for SMS, voice calls, video, and messaging featuresAdd SMS notifications, voice calls, video conferencing, and WhatsApp messaging to your applications. Perfect for building communication platforms and notification systems. |
API Key | Easy |
| Playroom Kit | Multiplayer game development platform with real-time featuresBuild multiplayer games with lobby systems, real-time state sync, voice chat, and player matching. Perfect for creating social games, party games, and collaborative gaming experiences. |
API Key | Medium |
| Twitter API v2 | Social media automation, bot creation, and analytics platformCreate Twitter bots, social media schedulers, sentiment analysis tools, and automated content systems. Build social listening platforms and engagement automation. |
OAuth | Hard |
| Discord API | Community and gaming platform integrationBuild Discord bots, server management tools, community platforms, and gaming integrations. Create automated moderation, custom commands, and interactive bot experiences. |
Bot Token | Medium |
| Clerk | Complete user management and authentication platformAdd sign-up, sign-in, user profiles, and session management with beautiful pre-built UI components. Includes social logins, MFA, and user organization features. |
API Key | Easy |
| Supabase | Backend-as-a-Service with real-time database and authenticationBuild full-stack applications with instant APIs, real-time subscriptions, file storage, and authentication. PostgreSQL database with automatic REST and GraphQL APIs. |
API Key | Medium |
| Algolia | Powerful search and discovery platformAdd instant search, autocomplete, and recommendation features to your applications. Perfect for e-commerce, documentation sites, and content discovery platforms. |
API Key | Easy |
| Cloudinary | Media management and optimization platformUpload, transform, optimize, and deliver images and videos. Automatic format conversion, resizing, and CDN delivery for better performance. |
API Key | Easy |
| Firebase | Google's app development platform with real-time featuresBuild web and mobile apps with real-time database, authentication, hosting, cloud functions, and push notifications. Complete backend solution. |
API Key | Easy |
| Agora | Real-time voice and video communication platformAdd live streaming, video calls, voice chat, and interactive broadcasting to your applications. Perfect for building social apps, live commerce, and virtual events. |
API Key | Medium |
| Mapbox | Advanced mapping and location servicesCreate custom interactive maps, navigation apps, and location-based features. Includes geocoding, routing, and beautiful map styling options. |
API Key | Medium |
| Socket.IO | Real-time bidirectional event-based communicationBuild real-time applications like chat systems, collaborative editors, live dashboards, and multiplayer games with WebSocket connections. |
None | Medium |
| Uploadcare | File uploading and processing platformHandle file uploads, image processing, video encoding, and document conversion. Includes drag-and-drop widgets and automatic optimization. |
API Key | Easy |
| Sanity | Headless CMS with real-time collaborationBuild content management systems with real-time editing, structured content, and flexible APIs. Perfect for blogs, e-commerce, and content-driven applications. |
API Key | Medium |
| Auth0 | Identity and access management platformImplement secure authentication, single sign-on, multi-factor authentication, and user management. Supports social logins and enterprise integrations. |
API Key | Medium |
| Vercel | Deployment and hosting platform with serverless functionsDeploy applications, manage domains, and run serverless functions. Perfect for building JAMstack applications with automatic deployments. |
API Key | Easy |
| Notion API | Workspace and productivity platform integrationBuild productivity tools, content management systems, and workflow automation. Access databases, pages, and blocks for creating custom Notion integrations. |
OAuth | Medium |
| Slack API | Team communication and workflow automationCreate Slack bots, workflow automations, and team productivity tools. Build custom commands, notifications, and integrations for workplace efficiency. |
OAuth | Medium |
| Airtable | Flexible database platform with spreadsheet interfaceBuild applications with structured data, automated workflows, and collaborative features. Perfect for CRM systems, project management, and content organization. |
API Key | Easy |
| Contentful | Headless CMS for content management and deliveryManage and deliver content across multiple platforms and devices. Build blogs, websites, and applications with structured content and media management. |
API Key | Easy |
| MongoDB Atlas | Cloud database platform with flexible document storageBuild applications with NoSQL database, full-text search, and analytics. Includes automatic scaling, backup, and security features. |
API Key | Medium |
| PlanetScale | Serverless MySQL database platformBuild applications with branching databases, automatic scaling, and zero-downtime schema changes. Perfect for modern web applications. |
API Key | Medium |
| Neon | Serverless PostgreSQL database with branchingBuild applications with modern PostgreSQL features, automatic scaling, and database branching for development workflows. |
API Key | Medium |
| Railway | Infrastructure platform for deploying applicationsDeploy and manage applications, databases, and services with automatic scaling and built-in monitoring. Perfect for full-stack applications. |
API Key | Easy |
| Linear | Project management and issue tracking platformBuild productivity tools, project dashboards, and workflow automation. Integrate with development workflows and team management systems. |
API Key | Medium |
| Medium RSS to JSON | Fetch Medium blog posts using RSS feed parsed as JSON | Not Required | Easy |
| Deepgram | High-accuracy speech-to-text API for real-time and recorded audioTranscribe voice and audio with advanced ML. Great for voice-enabled apps, transcripts, and call intelligence. Free tier available. |
API Key | Medium |
| OCR.space | Free Optical Character Recognition (OCR) APIExtract text from images, scanned PDFs, or documents. Great for invoice scanners, academic tools, and ID verifications. |
API Key | Easy |
| Unsplash | Free high-quality stock photos APIIntegrate royalty-free images into websites, blogs, e-commerce, or social content — attribution required. |
API Key | Easy |
| IPinfo | IP geolocation and intelligence APIDetect country, city, ISP, and more based on IP address — ideal for personalization, analytics, or content control. |
API Key | Easy |
| LibreTranslate | Free and open-source translation APITranslate text between major languages without any usage caps — no API key required. Self-hostable. |
None | Easy |
| Shields.io | Create dynamic badges for GitHub, APIs, or metricsGreat for displaying status, version, uptime, or custom metrics in projects and dashboards. |
None | Easy |
| DummyJSON | Fake API for e-commerce and user testingUse fake users, products, carts, and comments to prototype UI/UX designs and mock APIs easily. |
None | Easy |
| Open-Meteo | Free weather forecast APIWeather data with no API key, great for travel, agriculture, or dashboard use cases. |
None | Easy |
| Uptime Robot | Website and API monitoring with downtime alertsContinuously check the status of websites and services. Get real-time alerts when endpoints are down, measure performance, and integrate with dashboards and status pages. Great for DevOps, SaaS apps, and backend health monitoring. |
API Key | Easy |
Most requested APIs for common application features:
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Instagram Basic Display | Access user's Instagram content for building third-party Instagram applicationsBuild Instagram analytics tools, content schedulers, photo galleries, and social media management platforms. Access user media, profile info, and basic insights. |
OAuth | Medium |
| YouTube Data API | Access YouTube content, channels, playlists, and video dataBuild video portfolio sites, content management tools, analytics dashboards, and YouTube integrations. Search videos, manage playlists, and access channel statistics. |
API Key | Easy |
| Spotify Web API | Access Spotify's music catalog, user playlists, and playback featuresCreate music recommendation engines, playlist managers, music discovery apps, and audio analysis tools. Control playback and access user's music data. |
OAuth | Medium |
| Google Maps API | Comprehensive mapping, geocoding, and location servicesAdd interactive maps, location search, directions, and geolocation features to your applications. Perfect for delivery apps, store locators, and travel applications. |
API Key | Easy |
| SendGrid API | Reliable email delivery service for transactional and marketing emailsSend welcome emails, password resets, newsletters, and notifications. Includes email analytics, template management, and delivery optimization. |
API Key | Easy |
| GitHub API | Comprehensive access to GitHub's features for building developer tools and integrationsCreate code portfolio sites, automated deployment tools, issue trackers, code analysis tools, and development dashboards. Access repositories, commits, issues, and user data. |
OAuth/Token | Medium |
| Stripe API | Complete payment processing solution for e-commerce and subscription applicationsHandle payments, subscriptions, invoicing, and financial operations in your applications. Supports multiple payment methods and currencies with robust security. |
API Key | Medium |
- 🚀 Project Enhancers
- 🎯 Popular Integrations
- 🔒 Authentication & Authorization
- 🤖 Artificial Intelligence & Machine Learning
- 🐾 Animals
- 🎌 Anime & Manga
- 🛡️ Anti-Malware & Security
- 🎨 Art & Design
- ⛓️ Blockchain & Cryptocurrency
- 📚 Books & Literature
- 💼 Business & Finance
- 📅 Calendar & Events
- ☁️ Cloud Storage & File Sharing
- 🔧 Development & Testing
- 📖 Dictionaries & Language
- 📧 Email & Communication
- 🎬 Entertainment & Media
- 🌍 Environment & Weather
- 🏦 Finance & Banking
- 🍕 Food & Drink
- 🎮 Games & Comics
- 📍 Geocoding & Maps
- 🏛️ Government & Public Data
- ⚕️ Health & Medical
- 💼 Jobs & Careers
- 🎵 Music & Audio
- 📰 News & Journalism
- 📊 Open Data & Analytics
- 🔓 Open Source Projects
- 📱 Phone & SMS
- 📸 Photography & Images
- 💻 Programming & Code
- 🔬 Science & Mathematics
- 🛒 Shopping & E-commerce
- 👥 Social Media & Networking
- ⚽ Sports & Fitness
- 🧪 Test Data & Mock APIs
- 📝 Text Analysis & Processing
- 📦 Tracking & Logistics
- 🚗 Transportation & Travel
- 🔗 URL Shorteners
- 🚙 Vehicle Information
- 🎥 Video & Streaming
- 🧾 QR & Barcode Generation
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Auth0 | Complete identity and access management platformImplement user authentication, single sign-on, multi-factor authentication, and user management in your applications. |
API Key | Medium |
| Firebase Auth | Google's authentication service with multiple sign-in methodsAdd email/password, social logins, phone authentication, and anonymous authentication to your apps. |
API Key | Easy |
| Okta | Enterprise-grade identity and access managementSecure your applications with advanced authentication, authorization, and user management capabilities. |
API Key | Hard |
| Magic.link | Passwordless authentication using magic linksEnable secure login with just an email address — no passwords required. Great for Web3, SaaS, and onboarding flows. |
API Key | Easy |
| SuperTokens | Open-source authentication with prebuilt UI and backendIncludes email/password, social login, and session management. Easily customizable and self-hostable. |
None | Medium |
| Keycloak | Open-source identity and access managementSupports SSO, MFA, and OAuth2 login — widely used in modern apps and microservices. |
Token | Medium |
| Stytch | Passwordless authentication APIOffers email magic links, SMS OTPs, and OAuth integration for modern apps. |
API Key | Easy |
| Clerk API | User auth, account management & sessions for modern web appsIntegrates seamlessly with frontend frameworks like React, Next.js, and more. |
API Key | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Hugging Face | Access to thousands of machine learning models for NLP, computer vision, and audioUse pre-trained models for text classification, image recognition, language translation, and more without building models from scratch. |
API Key | Easy |
| Hugging Face Inference API | Run ML models via APIRun NLP, image, and audio ML models via simple HTTP calls. Use pretrained models from Hugging Face without any infra setup. |
API Key | Medium |
| Cohere | Natural language processing API for text generation, classification, and embeddingsBuild chatbots, content generators, semantic search, and text analysis applications with powerful language models. |
API Key | Easy |
| Anthropic Claude | Conversational AI models with long context windows and reasoning capabilitiesBuild advanced AI assistants, content generation tools, and knowledge systems with Claude's context-aware responses and nuanced text understanding. |
API Key | Medium |
| AssemblyAI | Speech-to-text and audio intelligence APITranscribe audio with high accuracy, detect sentiment, identify speakers, and extract key insights from audio content. |
API Key | Easy |
| Clarifai | Computer vision and natural language processing platformAdd image recognition, video analysis, text processing, and custom model training to your applications. |
API Key | Medium |
| Deepgram Speech-to-Text API | Real‑time Speech RecognitionHigh-accuracy real-time speech-to-text transcription with support for diarization, language detection, and more. |
API Key | Medium |
| Deepgram Text-to-Speech API | Realistic Text-to-SpeechConverts text into high-quality, natural-sounding audio using Deepgram’s TTS models. |
API Key | Medium |
| Groq API | Ultra-fast inference APIRuns LLMs (e.g., LLaMA 3) at extremely low latency using Groq's custom hardware accelerators. |
API Key | Medium |
| Together AI API | Inference for open modelsUnified endpoint to access and run open-source LLMs like Mixtral, GPT-JT, LLaMA 3 with pay-as-you-go pricing. |
API Key | Medium |
| Gemini API (Google AI Studio) | Generative AI for text content, similar to ChatGPTSupports text generation via Google’s Gemini models. Easily accessible with API key from AI Studio dashboard. |
API Key | Medium |
| OpenRouter | Unified API for accessing multiple LLMsQuery OpenAI, Anthropic, Mistral, Meta, and more through a single API endpoint — perfect for experimenting and benchmarking. |
API Key | Easy |
| Gemini Pro (Google AI) | Advanced generative AI platform by GoogleUse Gemini Flash and Gemini 1.5 Pro for tasks like text generation, scraping automation, summarization, and AI-powered content workflows. Ideal for NLP, intelligent agents, and structured data extraction. |
API Key | Medium |
| DeepAI | Wide range of AI APIs for vision and textFree APIs for text summarization, sentiment analysis, facial recognition, image colorization, and more. Perfect for prototyping AI use cases without model training. |
API Key | Easy |
| Roboflow | Computer vision API for object detection, classification, and segmentationDeploy custom-trained models or use public ones for tasks like face mask detection, waste sorting, and number plate recognition directly via API. |
API Key | Easy |
| GroqCloud | GroqCloud is a free-to-start, high-speed public API platform that offers access to open-source LLMs with ultra-low latency.You can use GroqCloud by calling its OpenAI-compatible API endpoints with your API key to run fast, real-time inference on open-source LLMs like LLaMA and Mixtral. |
API Key | Easy |
| ElevenLabs API | Text-to-speech API offering lifelike voice synthesis with multiple voices, emotions, and languagesCreate natural-sounding voiceovers, audiobooks, and voice interfaces with advanced AI voice synthesis technology. |
API Key | Medium |
| DeepL | Language translation APIAccurate and fast machine translation for text and documents in multiple languages, with support for glossaries and document translation. |
API Key | Easy |
| DeepAI | AI-powered APIs for image recognition, text summarization, and moreFree and paid APIs for image recognition, NSFW detection, text analysis, and style transfer. |
API Key | Easy |
| Stability AI | Text-to-image generation API using Stable DiffusionCreate stunning visuals from text prompts — great for creative AI projects. |
API Key | Medium |
| Mistral AI | Fast, open-weight LLMs for text generationUse Mistral 7B, Mixtral, and others for chatbots, coding tools, and reasoning apps. |
API Key | Easy |
| Replicate | Run open-source ML models via APIUse pre-trained models for audio, vision, language, and more. Includes real-time inference support. |
Token | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Dog API | Collection of dog images by breedGet random dog images, images by breed, and breed information for pet applications or fun projects. |
None | Easy |
| Cat API | Cat images, facts, and breed informationAccess thousands of cat images, breed data, and fun cat facts for pet-related applications. |
Optional | Easy |
| Cat Facts API | Fun cat factsProvides random cat facts for trivia apps, games, or animal-related content. |
None | Easy |
| Random Fox | Random fox imagesGet cute fox images for your applications or just for fun! |
None | Easy |
| Random Duck | Random duck imagesGet random duck images or GIFs. |
None | Easy |
| Bird API | Bird sounds and taxonomy dataSearch and retrieve bird song recordings, metadata, and taxonomy from a global collection. |
None | Medium |
| Shibe Online API | Random pictures of shibes, cats, and birdsGreat for pet-themed apps and generating cute animal images randomly. |
None | Easy |
| The Dog API | Comprehensive dog breed database with images and informationAccess extensive breed data, search by breed, temperament, and more. Includes image upload and voting features. |
API Key | Easy |
| Cat Ninjas API | Random cat images with ninja themesGet random cat images with ninja-themed content, perfect for fun applications and cat lovers who enjoy martial arts themes. |
None | Easy |
| Capy | Capybara Imagescapybara-api is a sweet, cute, fast API to get a whole bunch of images or a random image of a capybara |
None | Easy |
| Petfinder API | Find adoptable pets, shelters, and animal welfare orgsUse for pet adoption platforms and animal search directories. |
API Key | Medium |
| CATAAS | Cat as a Service API for fun cat images with custom textPerfect for testing image loads and having fun with memes. |
None | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Jikan | Unofficial MyAnimeList API for anime and manga dataAccess anime/manga information, ratings, reviews, and recommendations for building anime databases and recommendation systems. |
None | Easy |
| AniList API | GraphQL API for anime and manga dataComprehensive anime/manga database with user data, statistics, and social features. |
OAuth | Medium |
| Trace.moe | Anime scene search engineFind out which anime a scene is from by uploading an image or using a video frame. Useful for anime recognition tools. |
None | Easy |
| AnimeChan | Random anime quotesAccess over 10,000 quotes from a wide variety of anime titles and characters. |
None | Easy |
| AnimeNewsNetwork | Anime industry newsFetch industry-related news, staff, and anime information directly from ANN’s database. |
None | Medium |
| MangaDex | Manga database and communityProvides multilingual manga data, scanlations, user content, and reading statistics. |
apiKey | Medium |
| MyAnimeList API | Official API for MyAnimeListManage and access anime/manga lists, reviews, and user profiles. |
OAuth | Medium |
| NekosBest | Anime image and reaction APIServe reaction images and GIFs for anime roleplaying bots and fan apps. |
None | Easy |
| Shikimori API | Anime tracking and discoveryGet anime, manga, character, and user rating data along with forums and social info. |
OAuth | Medium |
| Kitsu | Anime discovery and tracking platform APIAccess anime, manga, and user libraries with search and filtering options. Great for anime recommendation engines. |
OAuth | Medium |
| Dragon Ball API | Custom-built API for Dragon Ball fansA fully functional, free-to-use API with real CRUD support—not just pseudo responses. Users can perform real operations like delete/reset, and the server restores to its base state within milliseconds. Built with Express.js, TypeScript, MongoDB, and JWT authentication. Perfect for learning and testing full-stack API interactions. Docs |
JWT (Admin) | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| VirusTotal | File and URL scanning for malware detectionScan files and URLs for viruses, malware, and security threats using multiple antivirus engines. |
API Key | Easy |
| Have I Been Pwned | Check if email addresses have been compromised in data breachesHelp users check if their credentials have been exposed in known data breaches. |
API Key | Easy |
| ALTCHA API | Proof-of-work CAPTCHA & anti-spam APICreate and verify challenges to protect forms and APIs without using cookies or user tracking. Supports classification and customizable complexity. |
API Key | Medium |
| IPQualityScore | Detect fraudulent users, bots, and malicious IPsPrevent fake signups and abuse with fraud scoring, email validation, and proxy/VPN detection. |
API Key | Medium |
| AbuseIPDB | Check if an IP address has been reported for abuseCheck IP addresses for reports of abusive behavior such as spam, hacking attempts, or malicious activity. Useful for threat intelligence and security applications. |
API Key | Easy |
| Google Safe Browsing API | Check URLs against Google’s list of unsafe web resourcesProtect users by warning about phishing, malware, and harmful sites. |
API Key | Medium |
| Mozilla Observatory | Scan HTTP security headers for web applicationsAnalyze websites for TLS, HSTS, CSP, XSS protection, and more. |
None | Easy |
| SecurityTrails API | Look up domain, DNS, IP, and historical WHOIS dataIdeal for threat intelligence and domain investigation tools. |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Unsplash | High-quality stock photographyAccess millions of free high-resolution photos for your applications, websites, and projects. |
API Key | Easy |
| Lorem Picsum | Lorem Ipsum for photos - placeholder imagesGenerate placeholder images of any size for mockups and development. |
None | Easy |
| Art Institute of Chicago | Access to museum's art collection and dataBrowse thousands of artworks, artist information, and exhibition data from one of the world's premier art museums. |
None | Easy |
| Kroki Diagram API | Text-to-Diagram GenerationCreate diagrams like UML, flowcharts, and more from simple code syntax using a unified HTTP API. |
None | Medium |
| Harvard Art Museums | Access the Harvard Art Museums collectionSearch and retrieve high-quality images, artist bios, and artwork details from Harvard's open access collection. |
API Key | Easy |
| CoinPaprika | Cryptocurrency metadata, historical data, and market statisticsFree access to global crypto data with fast response time and no auth required. |
None | Easy |
| xColors | A free API for generating & converting colorsEasily generate and convert color formats like HEX, RGB, and HSL with a simple, free API. |
None | Easy |
| EmojiHub | Access random emojis from sorted categories and groupsAccess random emojis from sorted categories, group, with addition to full emoji lists or the entire database. All in simple JSON format with HTML codes ready for web use. |
None | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| CoinGecko | Cryptocurrency data including prices, market cap, and trading volumeGet real-time crypto prices, historical data, market trends, and coin information for building crypto applications. |
None | Easy |
| Blockchain.info | Bitcoin blockchain data and statisticsAccess Bitcoin transaction data, wallet information, and blockchain statistics. |
None | Easy |
| Binance API | Comprehensive crypto exchange APIProvides endpoints for spot, margin, futures, and options trading across 300+ coins with high‑performance real-time data and order execution. |
API Key | Medium |
| Brave New Coin API | Global digital asset market dataProvides real-time and historical price indices, trading data, and analytics from 250+ exchanges via REST and WebSocket feeds. |
API Token | Medium |
| Coinbase API | Retail & institutional crypto tradingOffers account management, market data, and trading endpoints; requires API key, secret, and passphrase—supports both wallet and exchange operations. |
API Key + Secret + Passphrase | Medium |
| CoinDCX API | India-based INR crypto tradingLiquid, low-latency REST APIs for spot and futures, market data, and trading on 700+ markets (INR/crypto and crypto/crypto). |
API Key | Medium |
| Gemini API | US-based crypto exchange platformProvides secure account, order, and market data endpoints; supports both REST and FIX; strict rate limits and robust request signing are required. |
API Key + Secret | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Open Library | Book data from Internet Archive's Open LibrarySearch books, get book information, covers, and author details for building library applications and book catalogs. |
None | Easy |
| Google Books | Search and access book information from Google's book databaseBuild book search engines, reading lists, and book recommendation systems. |
API Key | Easy |
| PoetryDB | PoetryDB is the World's First API for next generation Internet poets. |
API Key | Easy |
| Gutendex | API for Project Gutenberg’s free eBook collectionSearch, browse, and retrieve metadata of public domain books from Project Gutenberg. |
None | Easy |
| ISBNdb | Search book details by ISBNIdeal for book-related platforms needing title, author, and category metadata. |
API Key | Easy |
| BookBrainz | Open and structured book metadataPerfect for cataloging and digital library projects. |
None | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Alpha Vantage | Stock market data, forex, and cryptocurrency informationGet real-time and historical stock prices, technical indicators, and financial data for building trading applications. |
API Key | Easy |
| IEX Cloud | Financial data including stocks, ETFs, and market statisticsAccess comprehensive financial market data for building investment tracking and analysis tools. |
API Key | Easy |
| Microsoft Graph API | Unified Microsoft 365 AccessSingle API for accessing Microsoft 365 services including mail, calendar, Teams, and OneDrive. |
OAuth | Medium |
| Domainsdb | Search across 260M+ registered domain names and 1000+ TLDs.Provides access to a vast index of registered domains, enabling keyword-based search across over 260 million domains and 1000+ TLDs. |
None | Easy |
| ExchangeRate API | Free currency exchange rate dataProvides current and historical foreign exchange rates for multiple currencies with no auth required. |
No | Easy |
| CoinGecko API | Comprehensive cryptocurrency market dataAccess real-time prices, market caps, charts, exchanges, and trending coins — great for crypto dashboards and DeFi apps. |
None | Medium |
| Financial Modeling Prep | Stock fundamentals, income statements, company profiles, and moreIdeal for financial dashboards and investment analysis tools. |
API Key | Medium |
| Finnhub | Real-time stock, crypto, forex data, and financial newsRich financial data including earnings, analyst ratings, and more — great for fintech apps. |
API Key | Medium |
| Fixer.io | Real-time foreign exchange rates for 170+ currenciesSimple, powerful currency conversion API for pricing apps and dashboards. |
API Key | Easy |
| OpenCorporates API | Largest open database of companies in the worldGet company info, jurisdictions, directors, and more — useful for KYC, research, and compliance tools. |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Google Calendar | Calendar management and event schedulingIntegrate calendar functionality, create events, manage schedules, and build scheduling applications. |
OAuth | Medium |
| Calendarific | Public holidays and observances for 230+ countriesGet holiday information and observances to enhance calendar applications and scheduling systems. |
API Key | Easy |
| Eventbrite API | Search, list, and manage events and organizersAccess public events, venues, and ticketing data. Ideal for event discovery platforms and scheduling tools. |
OAuth | Medium |
| Ticketmaster API | Search for concerts, sports, and entertainment eventsFilter by keyword, genre, location, and date. Great for entertainment and booking apps. |
API Key | Medium |
| Date.nager.Date API | Worldwide public holiday APIFree and open-source API to retrieve official holidays by country and year. Lightweight and easy to integrate. |
None | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Dropbox | File storage and sharing platform integrationAdd file upload, sharing, and synchronization features to your applications. |
OAuth | Medium |
| Google Drive | File storage and collaboration platformIntegrate Google Drive functionality for file management, sharing, and collaboration features. |
OAuth | Medium |
| Box API | Cloud content management and file collaborationUpload, manage, share files, and integrate workflows with secure access controls. Used by enterprises and startups alike. |
OAuth | Medium |
| Uploadcare API | File upload, CDN delivery, and media processing APIOffers smart image compression, on-the-fly transformations, and secure file handling. |
API Key | Easy |
| Filestack API | File upload, transform, and delivery serviceIntegrates advanced file picker, image editing, and robust file delivery/CDN capabilities. |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| JSONPlaceholder | Fake REST API for testing and prototypingPerfect for frontend development, testing, and learning. Provides fake posts, comments, users, and more. |
None | Easy |
| httpbin | HTTP request and response testing serviceTest HTTP libraries, debug requests, and understand HTTP behavior with various endpoints. |
None | Easy |
| ReqRes | Test your front-end against a real APISimulate real API responses for user management, authentication testing, and API integration testing. |
None | Easy |
| SVIX Webhooks API | Managed Webhook InfrastructureScalable and secure webhooks with retries, logging, SDKs, and debugging tools. |
API Key | Medium |
| GoQR | Generate customizable QR codes via URLCreate QR codes for text, URLs, and more with easy URL parameters. Useful for web apps, events, and product tagging. |
None | Easy |
| IPify | Get your public IP addressSimple API to return your public IP address in JSON or plain text. Useful for diagnostics and logging. |
None | Easy |
| UptimeRobot | Website and API uptime monitoring service with alertingMonitor the uptime, downtime, and performance of websites and APIs with automated alerts. Great for monitoring deployed apps during development and production. |
API Key | Easy |
| Postman Echo | Test and debug your REST APIsTest your REST clients and API calls with a fully-featured HTTP request & response service. |
None | Easy |
| Sentry API | Error tracking and performance monitoring for applications.Automate issue tracking, manage releases, and get detailed error reports to resolve bugs faster. Essential for production-grade applications. |
Bearer Token | Medium |
| Codecov API | Code coverage reporting and analysis.Integrate code coverage reports into your CI/CD pipeline to ensure code quality and maintain testing standards. |
API Key | Medium |
| FeatureFlags.io API | Feature flag and remote configuration management.Roll out features to specific user segments, perform A/B testing, and remotely control application features without deploying new code. |
API Key | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Dictionary API | Free English dictionary with definitions, pronunciations, and examplesAdd dictionary functionality to your applications with word definitions, phonetics, and usage examples. |
None | Easy |
| Google Translate | Language translation service supporting 100+ languagesAdd translation capabilities to your applications for international users. |
API Key | Easy |
| Oxford Dictionaries API | Dictionary & translation dataLookup word definitions, translations, pronunciations, example sentences, inflections, and word origins for multiple languages. |
App ID + App Key | Medium |
| Lingua Robot | Word definitions, pronunciation, and usagePowerful and developer-friendly dictionary API supporting phonetics, synonyms, and word meanings. |
API Key | Easy |
| Free Dictionary API | Get definitions, synonyms, phonetics, and usage examplesSupports multiple languages including English, Spanish, and French. |
None | Easy |
| WordsAPI | Word definitions, rhymes, syllables, frequency, and moreGreat for language learning tools, writing apps, and games. |
API Key | Easy |
| Wordnik API | Get definitions, synonyms, antonyms, and usage examplesLarge and well-structured dataset. Great for writing assistants and NLP tools. |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| USGS Earthquake API | Real-time earthquake data globallyProvides real-time earthquake data such as magnitude, location, and time from the U.S. Geological Survey. |
None | Medium |
| ReliefWeb API | Humanitarian disaster alerts and dataOffers curated humanitarian information including disaster updates, jobs, and reports published by UN and NGOs. |
None | Medium |
| Global Disaster Alert (GDACS) | Alerts on earthquakes, floods, cyclonesThe Global Disaster Alert and Coordination System gives updates on natural disasters like earthquakes, floods, and cyclones. |
None | Medium |
| IFRC GO API (Red Cross) | Disaster response and operations data by the International Federation of Red CrossIncludes field reports, emergency operations updates, deployments, and appeal data across regions. |
None | Medium |
| NASA EONET API | Earth Observatory Natural Event TrackerReal-time global natural events like wildfires, storms, and volcanic activity curated by NASA. |
None | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| EmailJS | Send emails directly from client-side JavaScriptSend emails from frontend applications without backend infrastructure. Great for contact forms and notifications. |
API Key | Easy |
| Mailgun | Email delivery service for developersSend transactional emails, newsletters, and notifications with high deliverability rates. |
API Key | Easy |
| Zoom API | Schedule and manage video meetings via APICreate meetings, manage users, and access recordings using JWT or OAuth authentication. Ideal for integrating Zoom into scheduling or video conferencing apps. |
API Key / OAuth | Medium |
| Google Meet (via Calendar API) | Create Meet links by scheduling calendar eventsUse the Google Calendar API to schedule events with embedded Google Meet links. Requires OAuth token and calendar scope. |
OAuth | Medium |
| Mailjet API | Send transactional or marketing emails via REST APITrack email status, deliverability, opens, and clicks. |
API Key | Medium |
| Brevo (Sendinblue) API | Email and SMS communication platform APIUse for newsletters, OTPs, and alerts with real-time analytics. |
API Key | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| The Movie Database (TMDb) | Movie and TV show database with images, ratings, and metadataBuild movie recommendation systems, entertainment apps, and media catalogs with comprehensive film and TV data. |
API Key | Easy |
| TV Maze | TV show information including episodes, cast, and schedulesGet detailed TV show information, episode guides, and cast details for entertainment applications. |
None | Easy |
| Watchmode API | Streaming MetadataMovie/TV search API with metadata, cast, ratings, and streaming availability across platforms. |
API Key | Medium |
| Podcast Index API | Podcast Metadata & DirectoryAccess podcast episodes, transcripts, feeds, and directories using open podcasting standards. |
API Key | Medium |
| GIPHY API | GIF search and trending content from GIPHYAccess GIFs, stickers, and reaction media using search, trending, and random endpoints. Requires a free API key. |
API Key | Easy |
| Breaking Bad Quotes API | Returns random quotes from Breaking BadPerfect for fan-based apps or quote generators. Returns a quote and the speaker. |
None | Easy |
| The Rick and Morty API | Get data from the Rick and Morty universeCharacters, locations, episodes, and relationships with a robust query system. Useful for building fan-based UIs or games. |
None | Easy |
| Star Wars API (SWAPI) | Access Star Wars universe dataRetrieve structured data on characters, planets, starships, and more. Popular in tutorials and fan apps. |
None | Easy |
| Marvel Comics API | Access Marvel characters, comics, stories, and eventsOfficial API for developers to integrate Marvel universe data into their apps. Requires registration. |
API Key | Easy |
| PokéAPI | Pokémon data including abilities, stats, and evolutionUseful for games, fan apps, or learning how to work with structured APIs and datasets. |
None | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| OpenWeatherMap | Weather data including current conditions, forecasts, and historical dataAdd weather information to your applications with current conditions, forecasts, and weather maps. |
API Key | Easy |
| AirVisual | Air quality data for cities worldwideGet real-time air quality information, pollution data, and health recommendations. |
API Key | Easy |
| REST Countries | Country metadata APIFetch data like flags, capital, region, population for every country—useful for educational or travel apps. |
None | Easy |
| Weatherbit API | Accurate weather forecasting and climate data APIProvides real-time and forecast weather metrics like temperature, humidity, and rainfall. Useful for climate-aware agriculture, IoT, and automation systems. |
API Key | Easy |
| OpenAQ | Global real-time air quality dataAccess worldwide air pollution measurements from verified sources. Useful for monitoring environmental conditions and pollution levels. |
API Key | Easy |
| MetaWeather | Free weather data with no authenticationGet current weather, forecasts, and historical weather data. Useful for quick testing and demos. |
No | Easy |
| Open-Meteo | Free weather forecast API for open-source useProvides hourly and daily forecasts for temperature, wind, rain, humidity, and more. Designed for fast integration without any API key. Ideal for open-source and academic projects with global weather coverage. |
None | Easy |
| Electricity Maps | Electricity data and carbon intensity worldwideGet real time, historical, and forecasted data on electricity mix, prices, and carbon emissions. |
API Key | Easy |
| WeatherAPI | Weather forecast and current weather data | API Key | Easy |
| Weatherstack | Real-time weather dataGet temperature, wind speed, precipitation, and forecasts — great for dashboards and travel apps. |
API Key | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Fixer.io | Foreign exchange rates and currency conversionGet real-time and historical exchange rates for building currency converters and financial applications. |
API Key | Easy |
| CurrencyAPI | Real-time and historical currency exchange ratesAccess accurate currency data for e-commerce, financial apps, and international business applications. |
API Key | Easy |
| Exchangerate.host | Free currency exchange & conversion APIProvides real-time foreign exchange rates and historical data. No API key needed and supports base currency selection. |
None | Easy |
| BankData API (OpenBanking) | UK open banking API for bank and ATM dataAccess detailed information on banks, ATMs, branches, and account services — ideal for fintech and banking apps. |
None | Medium |
| IBAN API | Validate international bank account numbers (IBAN)Useful for financial applications and international payment verification. |
API Key | Easy |
| CoinAPI | Cryptocurrency exchange rates and market dataAccess real-time crypto prices from multiple exchanges, ideal for crypto wallets and finance dashboards. |
API Key | Medium |
| Frankfurter API | Free and simple foreign exchange ratesOpen-source exchange rate API powered by the European Central Bank. Ideal for quick currency conversion tools. |
None | Easy |
| Binlist API | Bank and card BIN lookupGet bank details, country, and card type from card BINs — useful for fraud detection and checkout validation. |
None | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Spoonacular | Food and recipe data with nutrition informationBuild recipe apps, meal planners, and nutrition trackers with detailed food and recipe data. |
API Key | Easy |
| TheCocktailDB | Cocktail recipes and drink informationGet cocktail recipes, ingredients, and drink information for building bar and recipe applications. |
None/API Key | Easy |
| Open Brewery DB | Breweries in the USFind breweries by type, name, or location across the US. |
None | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| RAWG | Video game database with ratings, screenshots, and metadataBuild gaming applications with comprehensive video game data, reviews, and media. |
API Key | Easy |
| Comic Vine | Comic book database with characters, issues, and publishersAccess comic book information for building comic databases and recommendation systems. |
API Key | Medium |
| AmiiboAPI | Amiibo character dataRead-only REST API providing details on Amiibo figures, series, characters, and release usage. Great for game‑related trivia or collection apps. |
None | Easy |
| Chess.com API | Public chess data accessREST JSON‑LD API for player profiles, game archives, club & tournament info. Read‑only; no private data. |
None | Easy |
| Clash Royale API | Official Clash Royale dataProvides player stats, clan info, leaderboards, card data, and tournaments via REST with token‑based auth. |
API Key | Medium |
| Clash of Clans API | Official Clash of Clans endpointsAccess clan searches, leaderboards, player and clan profiles, wars, raids; uses JWT Bearer tokens. |
Token | Medium |
| Disney API | Disney characters & mediaREST & GraphQL API delivering Disney character metadata, films, TV shows, games, and attractions. |
None | Easy |
| Fortnite-API | Fortnite cosmetic/shop & statsExtensive REST API for cosmetics, daily shop, player stats, news, game modes; community‑driven with token‑based auth. |
API Key | Medium |
| Genshin Impact API | Genshin Impact game dataUnofficial REST API providing characters, weapons, artifacts, stats, and other static game data. |
None | Easy |
| Lichess API | Free, open-source chess server APIAccess user profiles, game archives, tournaments, live game streams, and bot endpoints. Great for building analysis tools, custom clients, and tournament integrations. |
OAuth | Medium |
| Raider API | Alternate Genshin game dataREST API (genshinlist.com) offering characters, weapon, and artifact endpoints; requires credit & non‑competing policy. |
None | Medium |
| Deck of Cards API | Simulate a deck of cards including shuffling and drawingUseful for creating card games, testing logic, or teaching card mechanics. |
None | Easy |
| RAWG Video Games Database API | Largest open video game database APIIncludes game titles, genres, ratings, developers, and stores. |
API Key | Easy |
| Comic Vine API | Comics, characters, volumes, issues & publishersGreat for superhero or comic tracking apps. |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Mapbox | Maps, geocoding, and location servicesAdd interactive maps, geocoding, and navigation features to your applications with customizable styling. |
API Key | Medium |
| IP Geolocation API | Get location by IPReturns city, country, ZIP code, and geo-coordinates from an IP address. |
None | Easy |
| PositionStack | Forward and reverse geocodingConvert addresses to coordinates (and vice versa) using a scalable and reliable location API. |
API Key | Medium |
| OpenStreetMap Nominatim | Free geocoding service using OpenStreetMap dataConvert addresses to coordinates and vice versa using open-source mapping data. |
None | Easy |
| SpaceX Launch Data | SpaceX launch information APIGet data on recent and upcoming launches including rocket, crew, site, payload, and more. |
None | Easy |
| Zippopotam.us | Postal code geolocation APIRetrieve location data (city, state, and country) based on postal codes across multiple countries. Great for geocoding-lite use cases or ZIP-to-location conversions. |
None | Easy |
| N2YO | Real-time satellite tracking data servicesTrack real-time satellite positions, visibility passes, and orbital data using NORAD TLEs with N2YO’s easy-to-use satellite tracking API. |
API Key | Medium |
| IPinfo | IP address lookup and geolocation serviceGet location, ISP, and organization info for IPs—ideal for location-based customization or analytics. |
None | Easy |
| what3words API | A unique way to identify any 3m x 3m square in the world with just three words.Ideal for precise location sharing for deliveries, emergencies, and travel applications where street addresses are not accurate enough. |
API Key | Easy |
| OpenSky Network API | Real-time and historical flight data for academic and non-commercial use.Track flights, get aircraft positions, and access a wealth of aviation data. A great free alternative for hobbyist projects. |
None | Medium |
| OpenCage Geocoder | Geocoding and reverse geocoding APIBuilt on OSM and other open sources — excellent for global location search and address formatting. |
API Key | Medium |
| Geoapify | All-in-one mapping, routing, and location servicesGreat for map visualizations, POI search, and route planning apps. |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| REST Countries | Country information including flags, currencies, and demographicsGet comprehensive country data for building educational apps, travel applications, and geographical tools. |
None | Easy |
| US Census | US demographic and economic dataAccess population, economic, and demographic data for research and analysis applications. |
None/API Key | Medium |
| Indian Government Open Data | Access to public datasets from Indian government agenciesAccess population, economic, and demographic data for research and analysis applications. |
API Key | Easy |
| India IT Department | India income tax dataTrack PAN, verify PAN, organization PAN verification API |
None/API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Disease.sh | COVID-19 and disease statisticsGet global disease data, COVID-19 statistics, and health information for building health tracking applications. |
None | Easy |
| FHIR | Healthcare interoperability standard for medical dataAccess and exchange healthcare information using industry-standard medical data formats. |
Varies | Hard |
| Nutritionix API | Nutrition & food databaseSearch branded and generic foods, fetch nutrition facts, serving sizes, UPC lookups, and natural language meal parsing. |
API Key | Medium |
| COVID19 API | Global COVID-19 statsGet accurate, country-wise COVID-19 case numbers, deaths, and recovery trends. |
None | Easy |
| Affirmations.dev | Positive self-affirmationsAPI that returns simple, uplifting affirmations — ideal for apps focused on self-care and emotional health. |
None | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Adzuna | Job search data and salary informationGet job listings, salary data, and employment statistics for building career platforms. |
API Key | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| JokeAPI | Programming, general, and dark jokes. | No | Easy |
| Official Joke API | Short general and programming jokes. | No | Medium |
| Chuck Norris API | Random Chuck Norris jokes. | No | Easy |
| Dad Jokes API | Dad jokes in JSON format. | No | Medium |
| Yo Momma API | Funny "yo momma" jokes. | No | Easy |
| JokeAPI.xyz | Random one-line jokes from a simple API. | No | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Last.fm | Music metadata, user listening data, and recommendationsBuild music discovery apps, scrobbling services, and music recommendation systems. |
API Key | Easy |
| Lyrics.ovh | Song lyrics databaseGet song lyrics for music applications and karaoke systems. |
None | Easy |
| Napster API | Comprehensive music catalog & playback APIAccess millions of tracks, artist metadata, user playlists, favorites, play counts, and more for building streaming apps. |
apiKey | Medium |
| Musixmatch API | Huge lyrics databaseSearch and retrieve licensed lyrics and translations for millions of songs, sync lyrics with media playback. |
API Key | Medium |
| SoundCloud API | Audio upload, insights & discoveryBuild apps leveraging user-uploaded tracks, comments, playlists, user profiles, and search/explore features on SoundCloud. |
OAuth (client_id/client_secret) | Medium |
| Mixcloud API | Podcasts & DJ mix dataFetch user profiles, cloudcasts, tags, playlists, and embed/stream content from Mixcloud. |
OAuth | Medium |
| TheAudioDB API | Community-driven music metadataRetrieve artist info, albums, tracks, images, and music videos; free tier with test key (“2”). |
API Key (test-level free) | Easy |
| Shazam (via ShazamKit / third-party) | Music recognition & discoveryUse Shazam’s audio recognition in apps to identify songs, access metadata, lyrics, artist info, and match audio from mic or file. |
SDK Key | Medium |
| AudioDB | Music artist and album dataSearch for artists, albums, tracks, and music videos — includes artwork and biography details. |
API Key | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Spaceflight News API | Spaceflight and rocket launch news dataGet the latest news on rocket launches, missions, and spaceflight updates. No authentication required. |
None | Easy |
| NewsAPI | News articles from thousands of sources worldwideBuild news aggregators, current events apps, and media monitoring tools with real-time news data. |
API Key | Easy |
| Guardian API | Access to The Guardian's content and archivesGet articles, multimedia content, and editorial data from The Guardian newspaper. |
API Key | Easy |
| New York Times API | Access NYT news content & dataRetrieve articles, movie reviews, book bestsellers, real‑time political data, archives, and more from The New York Times’ various endpoints. |
API Key | Medium |
| The Guardian Open Platform | Full‑text articles & metadataSearch and retrieve content, tags, sections, images, and multimedia from The Guardian’s archive and live site. |
API Key | Medium |
| Aylien News API | AI-powered news analysisSearch and analyze global news stories using NLP: filter by entities, categories, sentiment, and more. |
API Key | Medium |
| News Aggregator | Provides real-time and historical news with easy search and integration |
API Key | Easy |
| Currents API | Recent news published on blogs, websites, and news outletsProvides headlines and news articles across categories with filtering by language and region. |
API Key | Easy |
| GNews API | Access to news articles from thousands of sourcesSearch, filter, and retrieve news content using the free-tier GNews API. |
API Key | Easy |
| Mediastack | Real-time and historical news data APIProvides access to thousands of news sources for headlines, topics, and regions. |
API Key | Medium |
| NewsData.io | Search real-time news from 50+ countriesSupport for multiple languages, categories (tech, sports, etc.), and keyword filtering. |
API Key | Medium |
| ContextualWeb News API | Fetch curated news headlines with relevance scoringGreat for NLP apps, sentiment analysis, and trending news feeds. |
API Key (via RapidAPI) | Medium |
| New York Times API | Access top stories, archives, articles, and reviewsOfficial API for pulling news from the New York Times. Offers article search, movie and book reviews, and real-time headlines. |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| World Bank | Global development data and statisticsAccess economic, social, and development indicators for countries worldwide. |
None | Easy |
| Data.gov | US government open dataAccess thousands of government datasets covering various topics and departments. |
None/API Key | Easy |
| DuckDuckGo Instant Answer API | Zero-Click Information RetrievalProvides instant answers (definitions, facts, conversions) without tracking or requiring API keys. |
None | Medium |
| OpenCorporates API | Access company data from over 140 jurisdictions — including legal entities, directors, and filing histories.Ideal for compliance tools, investigative journalism, B2B verification apps, and enterprise analytics. |
API Key | Hard |
| SearchAPI.io | Real-time Google Search scraping API for extracting web results, news, images, shopping data, and more without captchas or IP bansUseful for SEO tools, market research, content monitoring, and building search-powered applications. Offers multiple engines (Google, Bing, Baidu, etc.), localization, and rich result extraction. Supports keyword tracking, location-based search, and custom device emulation. |
API Key | Medium |
| Data.gov API | U.S. government’s open data across health, environment, and moreSearch and integrate datasets for civic tech and research applications. |
API Key | Easy |
| Open Data EU Portal | Datasets from the European Union’s public repositoriesIdeal for researchers, analysts, and open data visualizations. |
API Key | Medium |
| UN Data API (UNStats) | Official UN statistics on global sustainable developmentUse for dashboards on education, poverty, health, and environment KPIs. |
None | Medium |
| OpenWeather Historical Bulk Data | Climate and meteorological open datasetsGet open access to past weather data, temperature, humidity, and pressure for analytics. |
None | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Libraries.io | Open source package and dependency dataTrack open source projects, dependencies, and package information across multiple package managers. |
API Key | Easy |
| GitLab API | GitLab project and repository managementAccess GitLab repositories, issues, merge requests, and CI/CD data for building developer tools. |
OAuth/Token | Medium |
| GHTorrent API | Provides a mirror of GitHub's public event stream into a queryable database format.Excellent for open source research, contributor network analysis, and understanding GitHub trends over time. |
No | Hard |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Listen Notes | The most comprehensive podcast database. Search for podcasts, episodes, and even listen to audio clips.This API is often called the "Google of podcasts." It allows you to build podcast players, discovery platforms, or analytical tools. |
API Key | Easy |
| Podcast Index | An open, developer-friendly podcast database. Focused on preserving podcasting as a platform for free speech.Provides a free and open alternative for accessing podcast metadata, including feeds, episodes, and categories. |
API Key | Easy |
| Podbean | Podcast hosting and management platform with a free plan and a 14-day free trial for premium features.Allows programmatic management of podcasts, episodes, stats, and publishing workflows. |
API Key | Easy |
| Anchor (Spotify for Podcasters) | Free podcast hosting and distribution platform by Spotify.Allows unlimited uploads, analytics, and one-step distribution to Spotify and other platforms. API access for episode management and analytics. |
Account | Easy |
| Transistor | Professional podcast hosting with a free trial and a comprehensive API.API allows uploading episodes, managing analytics, and more. Free trial available for new users. |
API Key | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Twilio | SMS, voice, and communication servicesSend SMS messages, make voice calls, and build communication features into your applications. |
API Key | Easy |
| TextBelt | Free SMS API for sending text messagesSend SMS messages programmatically with a simple REST API. |
None/API Key | Easy |
| Vonage | SMS, Voice, Video and Verification APIsAdd messaging, voice calls, video conferencing, and 2FA verification to applications. Supports global number provisioning and advanced communication workflows. |
API Key | Medium |
| Vonage API | Send and receive SMS programmaticallySupports SMS alerts, delivery reports, and OTP workflows globally. |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Pexels | Free stock photography and videosAccess thousands of high-quality free photos and videos for your projects and applications. |
API Key | Easy |
| Pixabay | Free images, vectors, and videosGet royalty-free images, illustrations, and videos for commercial and personal use. |
API Key | Easy |
| Flickr | Photo sharing and search APIAccess billions of public photos, search by tags, keywords, users, and more. Retrieve metadata, manage galleries, and interact with user content. Advanced features include group and collection management. |
API Key (OAuth for user data) | Medium |
| Lorem Picsum | Random placeholder images for mockupsGenerate random images with customizable dimensions and grayscale, blur, and seed options. Perfect for prototyping and UI design. |
None | Easy |
| Unsplash | Pull beautiful high-res images for UI testing |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| GitHub | Code repositories, issues, and development dataBuild developer tools, portfolio sites, and code analysis applications with comprehensive GitHub data. |
OAuth/Token | Medium |
| Stack Overflow | Programming Q&A data from Stack OverflowAccess questions, answers, and programming knowledge from the largest developer community. |
None/API Key | Easy |
| Judge0 | Online code execution and compiling APIExecute and evaluate code in multiple programming languages, ideal for building online compilers, coding challenges, and auto-graders. |
API Key | Medium |
| Judge0 API | Compile and execute code in 60+ languagesPerfect for building online IDEs or coding challenge platforms. |
API Key | Medium |
| Codeforces API | Fetch problems, contests, user profiles from CodeforcesUseful for building CP dashboards or live standings. |
None | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| NASA | Space and astronomy data from NASAAccess space images, astronomical data, and NASA mission information for educational and space applications. |
API Key | Easy |
| Numbers API | Interesting facts about numbersGet mathematical facts, date facts, and trivia about numbers for educational applications. |
None | Easy |
| Wolfram Alpha API | Computational knowledge engineSubmit queries to get structured data, charts, or plain‑text answers across math, science, culture, history, and more. |
API Key | Hard |
| Periodic Table API | Info about all elements of the periodic tableEducational API for accessing atomic data and chemistry-related information. |
None | Easy |
| Open Notify | Track the ISS and get people-in-space dataGet real-time data about the ISS location, upcoming passes over coordinates, and the current crew in space — no authentication needed. |
None | Easy |
| Numbers API | Get trivia and facts about numbers (math, dates, years)Fun and lightweight API for math-focused projects. |
None | Easy |
| Newton API | Math expression solver with stepsSolve algebra, calculus, matrices, equations — great for education tools. |
None | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Best Buy | Product information and pricing from Best BuyAccess product catalogs, pricing, and availability data for building price comparison and shopping applications. |
API Key | Easy |
| eBay | Marketplace data and product listingsAccess eBay listings, pricing data, and marketplace information for e-commerce applications. |
OAuth | Hard |
| Razorpay APIs | Full-stack payments solution for e-commerceAccept and manage online payments in India with invoices, webhooks, and subscriptions. |
API Key | Medium |
| Fake Store API | Mock e-commerce REST API with products, carts, and usersPerfect for testing shopping cart UIs and product-based layouts. |
None | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Twitter API | Tweet data, user information, and social media analyticsBuild social media tools, sentiment analysis applications, and Twitter integrations. |
OAuth | Hard |
Reddit posts, comments, and community dataAccess Reddit content for building social media analytics, content aggregators, and community tools. |
OAuth | Medium | |
| BlueSky | Skeet/user data, user information, and custom feedsUtilize the AT Protocol to access BlueSky's data to build bots, custom feeds and client apps. |
OAuth | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| ESPN | Sports scores, statistics, and newsGet live sports data, player statistics, and sports news for building sports applications. |
None | Easy |
| Football-Data | Soccer/football match data and statisticsAccess fixture lists, match results, and team statistics for soccer applications. |
API Key | Easy |
| Balldontlie | NBA data including players, teams, games, and season stats.Get live sports data, player season averages, player comparisons, and nba news for nba applications. |
None | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| JSONPlaceholder | Fake REST API for testing and prototypingPerfect for learning, testing, and prototyping with fake posts, comments, albums, photos, todos, and users. |
None | Easy |
| Random User Generator | Generate random user data for testingGet realistic user profiles with photos, names, addresses, and contact information for testing applications. |
None | Easy |
| Mockaroo | Generate realistic fake data for testing and development.Mockaroo allows you to easily download large amounts of randomly generated test data based on your own specs/schemas which you can then load directly into your test environment using CSV, SQL, JSON and many other formats. |
API Key | Easy |
| FakerAPI | Generate fake users, texts, products, and moreGreat for table layouts, dashboards, and frontend development. |
None | Easy |
| Bored API | Get random activity suggestionsUseful for apps that suggest fun tasks, learning goals, or creative breaks. Great for demos or boredom-relief features. |
None | Easy |
| ReqRes | Fake API for simulating user CRUD operationsProvides realistic response formats and supports login/registration flows. Great for frontend testing. |
None | Easy |
| Fake Store API | Fake e-commerce data including products, users, cartsIdeal for prototyping shop UIs and testing shopping flows with dummy items and prices. |
None | Easy |
| Random Data API | Generate fake users, addresses, credit cards, beers, and moreFun and flexible API with multiple endpoints for themed mock data like games, colors, appliances, etc. |
None | Easy |
| Uinames (Note: may be deprecated) | Generate random names by region and genderLightweight API for generating culturally contextualized names for testing and onboarding flows. |
None | Easy |
| Corporate BS Generator | Get fake corporate jargon and startup phrasesFun API that outputs corporate-style buzzwords — great for text placeholders and demos. |
None | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Natural Language API | Text analysis including sentiment, entities, and syntaxAnalyze text for sentiment, extract entities, and understand document structure using Google's ML models. |
API Key | Medium |
| Perspective API | Toxicity and comment analysisIdentify toxic comments and analyze text for harmful content to improve online conversations. |
API Key | Easy |
| Quote Garden | Random quotes APIFetch famous quotes by author or random ones—great for motivational widgets or writing prompts. |
None | Easy |
| Fun Translations | Translate text to fun fictional stylesTurn your messages into Yoda-speak, Minion language, Pirate lingo and more—great for fun apps or bots. |
None | Easy |
| Twinword Text Analysis API | Multi-feature text analysis (sentiment, emotion, keyword, etc.)Analyze text to extract keywords, check grammar, detect topics, measure readability, and classify sentiment/emotions using NLP models. |
API Key | Medium |
| DeepAI Text Generator | GPT-based text generationGenerate realistic and human-like text based on a given prompt using DeepAI’s generative language model. |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| AfterShip | Shipment tracking across multiple carriersTrack packages from various shipping carriers and provide delivery updates in your applications. |
API Key | Easy |
| 17track | Global package tracking serviceTrack shipments from international and domestic carriers worldwide. |
API Key | Easy |
| AfterShip API | Track shipments across 1000+ couriersSupports real-time tracking updates, delivery status, and carrier auto-detection. |
API Key | Medium |
| Shippo API | Multi-carrier shipping and label creationGreat for creating shipping integrations for e-commerce platforms. |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Amadeus | Flight search, hotel booking, and travel dataBuild travel applications with flight search, hotel availability, and destination information. |
API Key | Medium |
| Rome2rio | Multi-modal transport search and routingFind transportation options between destinations including flights, trains, buses, and driving directions. |
API Key | Medium |
| Skyscanner | Flight search and travel booking platformSearch flights, compare prices, and access travel data for building travel booking applications. |
API Key | Medium |
| Flightradar24 | Our API grants you immediate access to real-time and historical flight dataAlong with comprehensive information about airports and airlines. Whether you are developing an aviation app, integrating flight data into your systems, or conducting research, our API provides robust and reliable data to meet your needs |
API Key | Medium |
| AviationStack | Real-time flight dataAccess live flight status, airline routes, airport data, and historical flights from around the world. |
API Key | Medium |
| OpenSky Network API | Real-time and historical flight data for academic and non-commercial useTrack flights, get aircraft positions, and access a wealth of aviation data. A great free alternative for hobbyist projects. |
None | Medium |
| Transport API (UK) | Public transport data for the UK: buses, trains, routes, and stopsUseful for transport tracking, schedule lookups, and journey planning apps. |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| TinyURL | Shorten long URLsUse TinyURL’s API to programmatically shorten links for use in emails, websites, and SMS. Includes basic analytics. |
API Key | Easy |
| Bitly | URL shortening with analytics and custom domainsShorten URLs, track clicks, and analyze link performance with detailed analytics. |
OAuth | Medium |
| Is.gd | Simple URL shortening serviceBasic URL shortening without registration requirements. |
None | Easy |
| CleanURI | Simple and privacy-focused URL shortenerURL shortening with a focus on user privacy, no tracking. |
None | Easy |
| Rebrandly API | Custom branded URL shorteningTrack clicks, set slugs, and manage domain redirects programmatically. |
API Key | Medium |
| is.gd API | Minimalist short URL generatorQuickly shorten links without API keys. Great for testing or quick link drops. |
None | Easy |
| Shlink API | Self-hosted URL shortener with analyticsProvides detailed stats, tags, expiration, and QR code support. Great for privacy-focused use cases. |
API Key | Medium |
| Polr API | Open-source URL shortener APIHost your own shortening service with custom slugs and link tracking. |
Token | Medium |
| Bit.do API (Unofficial) | Unofficial wrapper for Bit.do shortening serviceLightweight and useful for quick shortening in personal apps or demos. |
None | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| NHTSA | Vehicle information and safety ratingsGet vehicle specifications, safety ratings, and recall information from the National Highway Traffic Safety Administration. |
None | Easy |
| CarMD | Vehicle diagnostic and maintenance informationAccess vehicle diagnostic data, maintenance schedules, and repair cost estimates. |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| YouTube Data API | YouTube video data, channel information, and analyticsBuild video applications, analytics dashboards, and YouTube integrations with comprehensive video platform data. |
API Key | Easy |
| Vimeo | Video hosting and streaming platformUpload, manage, and stream videos with Vimeo's professional video platform. |
OAuth | Medium |
| Daily.co | Video calling and live streaming APIAdd video calls, live streaming, and real-time communication to your applications. |
API Key | Medium |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| Quotable | A beautifully crafted API that delivers quotes from famous authors, categories, or random musings. Ideal for journaling prompts, motivational nudges, or simply starting your day with words that matter. |
None | Easy |
| Datamuse | A lexical treasure chest for writers and poets. Discover rhymes, similar-sounding words, adjectives, synonyms, and more to elevate your expression, polish your poetry, or break through writer’s block. |
None | Easy |
| API | Description | Auth | Difficulty |
|---|---|---|---|
| GoQR API | Generate QR codes for URLs, text, emails, phone numbers, and moreFree and simple API to dynamically generate QR codes in PNG format. No authentication required. Supports GET requests with customization options for size, data, and format. |
None | Easy |
| QR Code Monkey | Generate customizable QR codes with logos and color themesFree API to generate high-resolution QR codes in PNG, SVG, or PDF formats. Supports logo embedding, custom colors, error correction, and styling. No API key required. |
None | Easy |
Here are some powerful API combinations that work great together:
- OpenAI API + Eleven Labs = AI chatbots with voice responses
- Hugging Face + Unsplash = AI image analysis with stock photos
- Google Translate + Natural Language API = Multi-language sentiment analysis
- Whisper API + Twilio Voice = Voice-based AI assistants that transcribe and respond in real-time
- OpenAI Vision + OCR.space = Image understanding + document parsing for automation
- RAWG + Twitch API = Gaming community platforms
- Spotify + Last.fm = Music discovery and social features
- YouTube + TMDb = Entertainment content platforms
- Stripe + SendGrid = E-commerce with transactional and marketing emails
- Google Maps + Twilio = Location-based SMS reminders or alerts
- GitHub + Slack = DevOps & developer productivity stack
- Clearbit + Apollo.io = B2B lead generation and enrichment
- Xero + OCR.space = Auto-bookkeeping using scanned documents and invoices
- Liveblocks + Pusher = Real-time collaborative applications (whiteboards, docs, chat)
- Instagram + Unsplash = Tools for social media post automation with curated visuals
- Twitter + Sentiment Analysis = Brand and trend monitoring in real-time
- Zoom API + Calendly API = Instant meeting scheduling and coordination platform
- Firebase + Clerk.dev = Authentication and real-time chat for community apps
| Difficulty | Description | Typical Requirements |
|---|---|---|
| Easy | Simple REST API, good documentation, minimal setup | API key registration, basic HTTP requests |
| Medium | OAuth flow, more complex endpoints, moderate setup | OAuth implementation, token management |
| Hard | Complex authentication, extensive documentation, advanced features | Advanced OAuth, webhooks, complex data structures |
- Start with Easy APIs: Begin with APIs marked as "Easy" to get familiar with API integration
- Read the Documentation: Always check the official documentation for rate limits, authentication, and best practices
- Test in Postman: Use tools like Postman or Insomnia to test APIs before implementing them in your code
- Handle Errors Gracefully: Always implement proper error handling and respect rate limits
- Keep API Keys Secure: Never expose API keys in client-side code or public repositories
- Issues: Report bugs or request new APIs via GitHub Issues
- Discussions: Join community discussions for API recommendations and help on Slack
- Pull Requests: Contribute new APIs or improve existing documentation
- Star the Repository: Help others discover this resource
- Thanks to all API providers for offering free access to their services
- Community contributors who help maintain and expand this list
- Developers who use these APIs to build amazing applications
- To all the API fellows from the Keploy API Fellowship program for their research and contributions to the community
Made with ❤️ by the Keploy Community and the API Fellows