The Ultimate Collection of Free Public APIs for Developers
In the world of software development, APIs (Application Programming Interfaces) act as the essential bridges connecting different services and functionalities. Today, we are highlighting a comprehensive repository of Public APIs, meticulously curated by community members and the team at APILayer.
Whether you are building a side project, prototyping a new app, or integrating critical features into a product, this list serves as a treasure trove of resources. APILayer is known as the fastest way to integrate APIs into any product. You can explore APILayer APIs for your next project or join their Discord server for updates and community support.
Featured APILayer APIs
Below is a selection of high-quality APIs provided by APILayer to kickstart your development:
| API | Description | Call this API |
|---|---|---|
| IPstack | Locate and identify website visitors by IP address | Run In Postman |
| Marketstack | Free, easy-to-use REST API delivering worldwide stock market data in JSON format | Run In Postman |
| Weatherstack | Retrieve instant, accurate weather information for any location in JSON format | Run In Postman |
| Numverify | Global Phone Number Validation & Lookup JSON API | Run In Postman |
| Fixer | A simple and lightweight API for current and historical foreign exchange rates | Run In Postman |
| Aviationstack | Free, real-time flight status and global aviation data API | Run In Postman |
| Zenserp | Fast, accurate Google search data built for developers | Run In Postman |
| Screenshotlayer | Capture highly customizable screenshots of any website | Documentation |
| Exchangerate Host | Real-time current and historical foreign exchange and crypto rates | Documentation |
| Mailboxlayer | Email validation & verification JSON API for developers | Documentation |
Contribute to the Project
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Comprehensive Public API Index
Below is the detailed index of public APIs categorized by domain. These tables include the API name, description, authentication method, HTTPS support, and CORS status.
1. Animals
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| AdoptAPet | Resource to help get pets adopted | apiKey |
Yes | Yes |
| Axolotl | Collection of axolotl pictures and facts | No | Yes | No |
| Cat Facts | Daily cat facts | No | Yes | No |
| Cataas | Cat as a service (cats pictures and gifs) | No | Yes | No |
| Cats | Pictures of cats from Tumblr | apiKey |
Yes | No |
| Dog Facts | Random dog facts | No | Yes | Yes |
| Dog Facts | Random facts of Dogs | No | Yes | Yes |
| Dogs | Based on the Stanford Dogs Dataset | No | Yes | Yes |
| eBird | Retrieve recent or notable birding observations within a region | apiKey |
Yes | No |
| FishWatch | Information and pictures about individual fish species | No | Yes | Yes |
| HTTP Cat | Cat for every HTTP Status | No | Yes | Yes |
| HTTP Dog | Dogs for every HTTP response status code | No | Yes | Yes |
| IUCN | IUCN Red List of Threatened Species | apiKey |
No | No |
| MeowFacts | Get random cat facts | No | Yes | No |
| Movebank | Movement and Migration data of animals | No | Yes | Yes |
| Petfinder | Resource to get pets adopted | apiKey |
Yes | Yes |
| PlaceBear | Placeholder bear pictures | No | Yes | Yes |
| PlaceDog | Placeholder Dog pictures | No | Yes | Yes |
| PlaceKitten | Placeholder Kitten pictures | No | Yes | Yes |
| RandomDog | Random pictures of dogs | No | Yes | Yes |
| RandomDuck | Random pictures of ducks | No | Yes | No |
| RandomFox | Random pictures of foxes | No | Yes | No |
| RescueGroups | Adoption | No | Yes | Unknown |
| Shibe.Online | Random pictures of Shiba Inu, cats or birds | No | Yes | Yes |
| The Dog | Public service about Dogs | apiKey |
Yes | No |
| xeno-canto | Bird recordings | No | Yes | Unknown |
| Zoo Animals | Facts and pictures of zoo animals | No | Yes | Yes |
2. Anime
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| AniAPI | Anime discovery, streaming & syncing with trackers | OAuth |
Yes | Yes |
| AniDB | Anime Database | apiKey |
No | Unknown |
| AniList | Anime discovery & tracking | OAuth |
Yes | Unknown |
| AnimeChan | Anime quotes (over 10k+) | No | Yes | No |
| AnimeFacts | Anime Facts (over 100+) | No | Yes | Yes |
| AnimeNewsNetwork | Anime industry news | No | Yes | Yes |
| Catboy | Neko images, funny GIFs & more | No | Yes | Yes |
| Danbooru Anime | Thousands of anime artist database | apiKey |
Yes | Yes |
| Jikan | Unofficial MyAnimeList API | No | Yes | Yes |
| Kitsu | Anime discovery platform | OAuth |
Yes | Yes |
| MangaDex | Manga Database and Community | apiKey |
Yes | Unknown |
| Mangapi | Translate manga pages | apiKey |
Yes | Unknown |
| MyAnimeList | Anime and Manga Database and Community | OAuth |
Yes | Unknown |
| NekosBest | Neko Images & Anime roleplaying GIFs | No | Yes | Yes |
| Shikimori | Anime discovery, tracking, forum, rates | OAuth |
Yes | Unknown |
| Studio Ghibli | Resources from Studio Ghibli films | No | Yes | Yes |
| Trace Moe | Tool to get the exact anime scene from a screenshot | No | Yes | No |
| Waifu.im | Get waifu pictures from an archive | No | Yes | Yes |
| Waifu.pics | Image sharing platform for anime images | No | Yes | No |
3. Anti-Malware
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| AbuseIPDB | IP/domain/URL reputation | apiKey |
Yes | Unknown |
| AlienVault OTX | IP/domain/URL reputation | apiKey |
Yes | Unknown |
| CAPEsandbox | Malware execution and analysis | apiKey |
Yes | Unknown |
| Google Safe Browsing | Google Link/Domain Flagging | apiKey |
Yes | Unknown |
| MalDatabase | Provide malware datasets and threat intelligence | apiKey |
Yes | Unknown |
| MalShare | Malware Archive / file sourcing | apiKey |
Yes | No |
| MalwareBazaar | Collect and share malware samples | apiKey |
Yes | Unknown |
| Metacert | Metacert Link Flagging | apiKey |
Yes | Unknown |
| NoPhishy | Check links for phishing attempts | apiKey |
Yes | Yes |
| Phisherman | IP/domain/URL reputation | apiKey |
Yes | Unknown |
| Scanii | Scan documents/files for threats | apiKey |
Yes | Yes |
| URLhaus | Bulk queries and Download Malware Samples | No | Yes | Yes |
| URLScan.io | Scan and Analyse URLs | apiKey |
Yes | Unknown |
| VirusTotal | VirusTotal File/URL Analysis | apiKey |
Yes | Unknown |
| Web of Trust | IP/domain/URL reputation | apiKey |
Yes | Unknown |
4. Art & Design
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| Améthyste | Generate images for Discord users | apiKey |
Yes | Unknown |
| Art Institute of Chicago | Art | No | Yes | Yes |
| Colormind | Color scheme generator | No | No | Unknown |
| ColourLovers | Get various patterns, palettes and images | No | No | Unknown |
| Cooper Hewitt | Smithsonian Design Museum | apiKey |
Yes | Unknown |
| Dribbble | Discover the world’s top designers & creatives | OAuth |
Yes | Unknown |
| EmojiHub | Get emojis by categories and groups | No | Yes | Yes |
| Europeana | European Museum and Galleries content | apiKey |
Yes | Unknown |
| Harvard Art Museums | Art | apiKey |
No | Unknown |
| Icon Horse | Favicons for any website, with fallbacks | No | Yes | Yes |
| Iconfinder | Icons | apiKey |
Yes | Unknown |
| Icons8 | Icons | No | Yes | Unknown |
| Lordicon | Icons with predone Animations | No | Yes | Yes |
| Metropolitan Museum of Art | Met Museum of Art | No | Yes | No |
| Noun Project | Icons | OAuth |
No | Unknown |
| PHP-Noise | Noise Background Image Generator | No | Yes | Yes |
| Pixel Encounter | SVG Icon Generator | No | Yes | No |
| Rijksmuseum | RijksMuseum Data | apiKey |
Yes | Unknown |
| Word Cloud | Easily create word clouds | apiKey |
Yes | Unknown |
| xColors | Generate & convert colors | No | Yes | Yes |
5. Authentication & Authorization
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| Auth0 | Easy to implement, adaptable authentication platform | apiKey |
Yes | Yes |
| GetOTP | Implement OTP flow quickly | apiKey |
Yes | No |
| Micro User Service | User management and authentication | apiKey |
Yes | No |
| MojoAuth | Secure and modern passwordless authentication | apiKey |
Yes | Yes |
| SAWO Labs | Simplify login with passwordless authentication | apiKey |
Yes | Yes |
| Stytch | User infrastructure for modern applications | apiKey |
Yes | No |
| Warrant | APIs for authorization and access control | apiKey |
Yes | Yes |
6. Blockchain
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| Bitquery | Onchain GraphQL APIs & DEX APIs | apiKey |
Yes | Yes |
| Chainlink | Build hybrid smart contracts with Chainlink | No | Yes | Unknown |
| Chainpoint | Global network for anchoring data to Bitcoin blockchain | No | Yes | Unknown |
| Covalent | Multi-blockchain data aggregator platform | apiKey |
Yes | Unknown |
| Etherscan | Ethereum explorer API | apiKey |
Yes | Yes |
| Helium | Distributed network of Hotspots | No | Yes | Unknown |
| Nownodes | Blockchain-as-a-service solution | apiKey |
Yes | Unknown |
| Steem | Blockchain-based blogging and social media | No | No | No |
| The Graph | Indexing protocol for querying networks | apiKey |
Yes | Unknown |
| Walltime | Retrieve Walltime’s market info | No | Yes | Unknown |
| Watchdata | Provide simple and reliable API access to Ethereum | apiKey |
Yes | Unknown |
7. Books
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| A Bíblia Digital | Manage multiple versions of the Bible | apiKey |
Yes | No |
| Bhagavad Gita | Open Source Shrimad Bhagavad Gita API | apiKey |
Yes | Yes |
| Bhagavad Gita | Bhagavad Gita text | OAuth |
Yes | Yes |
| Bhagavad Gita telugu | Bhagavad Gita API in Telugu and Odia | No | Yes | Yes |
| Bible-api | Free Bible API with multiple languages | No | Yes | Yes |
| British National Bibliography | Books | No | No | Unknown |
| Crossref Metadata Search | Books & Articles Metadata | No | Yes | Unknown |
| Ganjoor | Classic Persian poetry works | OAuth |
Yes | Yes |
| Google Books | Books | OAuth |
Yes | Unknown |
| GurbaniNow | Fast and Accurate Gurbani RESTful API | No | Yes | Unknown |
| Gutendex | Web-API for fetching data from Project Gutenberg | No | Yes | Unknown |
| Open Library | Books, book covers and related data | No | Yes | No |
| Penguin Publishing | Books, book covers and related data | No | Yes | Yes |
| PoetryDB | Instant data from poetry collection | No | Yes | Yes |
| Quran | RESTful Quran API with multiple languages | No | Yes | Yes |
| Quran Cloud | RESTful Quran API | No | Yes | Yes |
| Quran-api | Free Quran API Service | No | Yes | Yes |
| Rig Veda | Gods and poets from vedic literature | No | Yes | Unknown |
| The Bible | Everything you need from the Bible | apiKey |
Yes | Unknown |
| Thirukkural | 1330 Thirukkural poems and explanation | No | Yes | Yes |
| Vedic Society | Descriptions of nouns from vedic literature | No | Yes | Unknown |
| Wizard World | Information from the Harry Potter universe | No | Yes | Yes |
| Wolne Lektury | API for obtaining info about e-books | No | Yes | Unknown |
8. Business
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| Apache Superset | API to manage BI dashboards | apiKey |
Yes | Yes |
| Charity Search | Non-profit charity data | apiKey |
No | Unknown |
| Clearbit Logo | Search for company logos | apiKey |
Yes | Unknown |
| Domainsdb.info | Registered Domain Names Search | No | Yes | No |
| Freelancer | Hire freelancers to get work done | OAuth |
Yes | Unknown |
| Gmail | Flexible, RESTful access to the user’s inbox | OAuth |
Yes | Unknown |
| Google Analytics | Collect, configure and analyze data | OAuth |
Yes | Unknown |
| Instatus | Post to and update maintenance on status page | apiKey |
Yes | Unknown |
| Mailchimp | Send marketing campaigns and transactional mails | apiKey |
Yes | Unknown |
| mailjet | Send marketing email | apiKey |
Yes | Unknown |
| markerapi | Trademark Search | No | No | Unknown |
| ORB Intelligence | Company lookup | apiKey |
Yes | Unknown |
| Redash | Access your queries and dashboards | apiKey |
Yes | Yes |
| Smartsheet | Programmatically access Smartsheet data | OAuth |
Yes | No |
| Square | Easy way to take payments | OAuth |
Yes | Unknown |
| SwiftKanban | Kanban software | apiKey |
Yes | Unknown |
| Tenders in Hungary | Data for procurements in Hungary | No | Yes | Unknown |
| Tenders in Poland | Data for procurements in Poland | No | Yes | Unknown |
| Tenders in Romania | Data for procurements in Romania | No | Yes | Unknown |
| Tenders in Spain | Data for procurements in Spain | No | Yes | Unknown |
| Tenders in Ukraine | Data for procurements in Ukraine | No | Yes | Unknown |
| Tomba email finder | Email Finder for B2B sales | apiKey |
Yes | Yes |
| Trello | Boards, lists and cards to organize projects | OAuth |
Yes | Unknown |
9. Calendar
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| Public Holidays | Data on national, regional, and religious holidays | apiKey |
Yes | Yes |
| Calendarific | Worldwide Holidays | apiKey |
Yes | Unknown |
| Checkiday | Industry-leading Holiday API | apiKey |
Yes | Unknown |
| Church Calendar | Catholic liturgical calendar | No | No | Unknown |
| Czech Namedays Calendar | Lookup for a name and returns nameday date | No | No | Unknown |
| Festivo Public Holidays | Fastest public holiday service | apiKey |
Yes | Yes |
| Google Calendar | Display, create and modify Google calendar events | OAuth |
Yes | Unknown |
| Hebrew Calendar | Convert between Gregorian and Hebrew | No | No | Unknown |
| Holidays | Historical data regarding holidays | apiKey |
Yes | Unknown |
| LectServe | Protestant liturgical calendar | No | No | Unknown |
| Nager.Date | Public holidays for more than 90 countries | No | Yes | No |
| Namedays Calendar | Provides namedays for multiple countries | No | Yes | Yes |
| Non-Working Days | Database of ICS files for non working days | No | Yes | Unknown |
| Non-Working Days | Simple REST API for checking working days | No | Yes | Yes |
| Russian Calendar | Check if a date is a Russian holiday | No | Yes | No |
| UK Bank Holidays | Bank holidays in UK | No | Yes | Unknown |
10. Cloud Storage & File Sharing
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| AnonFiles | Upload and share your files anonymously | No | Yes | Unknown |
| BayFiles | Upload and share your files | No | Yes | Unknown |
| Box | File Sharing and Storage | OAuth |
Yes | Unknown |
| ddownload | File Sharing and Storage | apiKey |
Yes | Unknown |
| Dropbox | File Sharing and Storage | OAuth |
Yes | Unknown |
| File.io | Super simple file sharing | No | Yes | Unknown |
| Filestack | Filestack File Uploader & File Upload API | apiKey |
Yes | Unknown |
| GoFile | Unlimited size file uploads for free | apiKey |
Yes | Unknown |
| Google Drive | File Sharing and Storage | OAuth |
Yes | Unknown |
| Gyazo | Save & Share screen captures instantly | apiKey |
Yes | Unknown |
| Imgbb | Simple and quick private image sharing | apiKey |
Yes | Unknown |
| OneDrive | File Sharing and Storage | OAuth |
Yes | Unknown |
| Pantry | Free JSON storage for small projects | No | Yes | Yes |
| Pastebin | Plain Text Storage | apiKey |
Yes | Unknown |
| Pinata | IPFS Pinning Services API | apiKey |
Yes | Unknown |
| Quip | File Sharing and Storage for groups | apiKey |
Yes | Yes |
| Storj | Decentralized Open-Source Cloud Storage | apiKey |
Yes | Unknown |
| The Null Pointer | No-bullshit file hosting and URL shortening | No | Yes | Unknown |
| Web3 Storage | File Sharing and Storage for Free | apiKey |
Yes | Yes |
11. Continuous Integration
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| Azure DevOps Health | Resource health helps diagnose Azure issues | apiKey |
No | No |
| Bitrise | Build tool and processes integrations | apiKey |
Yes | Unknown |
| Buddy | The fastest CI/CD platform | OAuth |
Yes | Unknown |
| CircleCI | Automate the software development process | apiKey |
Yes | Unknown |
| Codeship | Continuous Integration Platform | apiKey |
Yes | Unknown |
| Travis CI | Sync your GitHub projects with Travis CI | apiKey |
Yes | Unknown |
12. Cryptocurrency
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| 0x | API for querying token and pool stats | No | Yes | Yes |
| 1inch | API for querying decentralize exchange | No | Yes | Unknown |
| Alchemy Ethereum | Ethereum Node-as-a-Service Provider | apiKey |
Yes | Yes |
| apilayer coinlayer | Real-time Crypto Currency Exchange Rates | apiKey |
Yes | Unknown |
| Binance | Exchange for Trading Cryptocurrencies | apiKey |
Yes | Unknown |
| Bitcambio | Get the list of all traded assets | No | Yes | Unknown |
| BitcoinAverage | Digital Asset Price Data | apiKey |
Yes | Unknown |
| BitcoinCharts | Financial and Technical Data | No | Yes | Unknown |
| Bitfinex | Cryptocurrency Trading Platform | apiKey |
Yes | Unknown |
| Bitmex | Real-Time Cryptocurrency derivatives trading | apiKey |
Yes | Unknown |
| Bittrex | Next Generation Crypto Trading Platform | apiKey |
Yes | Unknown |
| Block | Bitcoin Payment, Wallet & Transaction Data | apiKey |
Yes | Unknown |
| Blockchain | Bitcoin Payment, Wallet & Transaction Data | apiKey |
Yes | Unknown |
| blockfrost Cardano | Interaction with the Cardano mainnet | apiKey |
Yes | Unknown |
| Brave NewCoin | Real-time and historic crypto data | apiKey |
Yes | Unknown |
| BtcTurk | Real-time cryptocurrency data | apiKey |
Yes | Yes |
| Bybit | Cryptocurrency data feed and algorithmic trading | apiKey |
Yes | Unknown |
| CoinAPI | All Currency Exchanges integrate under a single api | apiKey |
Yes | No |
| Coinbase | Bitcoin, Bitcoin Cash, Litecoin and Ethereum Prices | apiKey |
Yes | Unknown |
| Coinbase Pro | Cryptocurrency Trading Platform | apiKey |
Yes | Unknown |
| CoinCap | Real time Cryptocurrency prices | No | Yes | Unknown |
| CoinDCX | Cryptocurrency Trading Platform | apiKey |
Yes | Unknown |
| CoinDesk | CoinDesk’s Bitcoin Price Index (BPI) | No | Yes | Unknown |
| CoinGecko | Cryptocurrency Price, Market, and Developer/Social Data | No | Yes | Yes |
| Coinigy | Interacting with Coinigy Accounts and Exchange | apiKey |
Yes | Unknown |
| Coinlib | Crypto Currency Prices | apiKey |
Yes | Unknown |
| Coinlore | Cryptocurrencies prices, volume and more | No | Yes | Unknown |
| CoinMarketCap | Cryptocurrencies Prices | apiKey |
Yes | Unknown |
| Coinpaprika | Cryptocurrencies prices, volume and more | No | Yes | Yes |
| CoinRanking | Live Cryptocurrency data | apiKey |
Yes | Unknown |
| Coinremitter | Cryptocurrencies Payment & Prices | apiKey |
Yes | Unknown |
| CoinStats | Crypto Tracker | No | Yes | Unknown |
| CryptAPI | Cryptocurrency Payment Processor | No | Yes | Unknown |
| CryptingUp | Cryptocurrency data | No | Yes | Unknown |
| CryptoCompare | Cryptocurrencies Comparison | No | Yes | Unknown |
| CryptoMarket | Cryptocurrencies Trading platform | apiKey |
Yes | Yes |
| Cryptonator | Cryptocurrencies Exchange Rates | No | Yes | Unknown |
| dYdX | Decentralized cryptocurrency exchange | apiKey |
Yes | Unknown |
| Ethplorer | Ethereum tokens, balances, addresses, history | apiKey |
Yes | Unknown |
| EXMO | Cryptocurrencies exchange based in UK | apiKey |
Yes | Unknown |
| FTX | Complete REST, websocket, and FTX APIs | apiKey |
Yes | Yes |
| Gateio | API provides spot, margin and futures trading | apiKey |
Yes | Unknown |
| Gemini | Cryptocurrencies Exchange | No | Yes | Unknown |
| Hirak Exchange Rates | Exchange rates between 162 currency & 300 crypto | apiKey |
Yes | Unknown |
| Huobi | Seychelles based cryptocurrency exchange | apiKey |
Yes | Unknown |
| icy.tools | GraphQL based NFT API | apiKey |
Yes | Unknown |
| Indodax | Trade your Bitcoin and other assets | apiKey |
Yes | Unknown |
| INFURA Ethereum | Interaction with the Ethereum mainnet | apiKey |
Yes | Yes |
| Kraken | Cryptocurrencies Exchange | apiKey |
Yes | Unknown |
| KuCoin | Cryptocurrency Trading Platform | apiKey |
Yes | Unknown |
| Localbitcoins | P2P platform to buy and sell Bitcoins | No | Yes | Unknown |
| Mempool | Bitcoin API Service focusing on fee | No | Yes | No |
| MercadoBitcoin | Brazilian Cryptocurrency Information | No | Yes | Unknown |
| Messari | Provides API endpoints for crypto assets | No | Yes | Unknown |
| Nexchange | Automated cryptocurrency exchange service | No | No | Yes |
| Nomics | Historical and realtime cryptocurrency prices | apiKey |
Yes | Yes |
| NovaDAX | NovaDAX API to access all market data | apiKey |
Yes | Unknown |
| OKEx | Cryptocurrency exchange based in Seychelles | apiKey |
Yes | Unknown |
| Poloniex | US based digital asset exchange | apiKey |
Yes | Unknown |
| Solana JSON RPC | Provides various endpoints to interact with Solana | No | Yes | Unknown |
| Technical Analysis | Cryptocurrency prices and technical analysis | apiKey |
Yes | No |
| VALR | Cryptocurrency Exchange based in South Africa | apiKey |
Yes | Unknown |
| WorldCoinIndex | Cryptocurrencies Prices | apiKey |
Yes | Unknown |
| ZMOK | Ethereum JSON RPC API and Web3 provider | No | Yes | Unknown |
13. Currency Exchange
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| 1Forge | Forex currency market data | apiKey |
Yes | Unknown |
| Amdoren | Free currency API with over 150 currencies | apiKey |
Yes | Unknown |
| apilayer fixer.io | Exchange rates and currency conversion | apiKey |
No | Unknown |
| Bank of Russia | Exchange rates and currency conversion | No | Yes | Unknown |
| Currency-api | Free Currency Exchange Rates API | No | Yes | Yes |
| CurrencyFreaks | Provides current and historical currency rates | apiKey |
Yes | Yes |
| Currencylayer | Exchange rates and currency conversion | apiKey |
Yes | Unknown |
| CurrencyScoop | Real-time and historical currency rates JSON API | apiKey |
Yes | Yes |
| Czech National Bank | A collection of exchange rates | No | Yes | Unknown |
| Economia.Awesome | Portuguese free currency prices and conversion | No | Yes | Unknown |
| ExchangeRate-API | Free currency conversion | apiKey |
Yes | Yes |
| Exchangerate.host | Free foreign exchange & crypto rates API | No | Yes | Unknown |
| Exchangeratesapi.io | Exchange rates with currency conversion | apiKey |
Yes | Yes |
| Frankfurter | Exchange rates, currency conversion and time series | No | Yes | Yes |
| FreeForexAPI | Real-time foreign exchange rates | No | Yes | No |
| National Bank of Poland | A collection of currency exchange rates | No | Yes | Yes |
| VATComply.com | Exchange rates, geolocation and VAT validation | No | Yes | Yes |
14. Data Validation
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| Lob.com | US Address Verification | apiKey |
Yes | Unknown |
| Postman Echo | Test api server | No | Yes | Unknown |
| PurgoMalum | Content validator against profanity | No | No | Unknown |
| US Autocomplete | Real-time address suggestions | apiKey |
Yes | Yes |
| US Extract | Extract postal addresses from text | apiKey |
Yes | Yes |
| US Street Address | Validate and append data for US postal address | apiKey |
Yes | Yes |
| vatlayer | VAT number validation | apiKey |
Yes | Unknown |
15. Development
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| 24 Pull Requests | Project to promote open source collaboration | No | Yes | Yes |
| Screenshot | Take programmatic screenshots | apiKey |
Yes | Yes |
| Agify.io | Estimates the age from a first name | No | Yes | Yes |
| API Grátis | Multiples services and public APIs | No | Yes | Unknown |
| ApicAgent | Extract device details from user-agent string | No | Yes | Yes |
| ApiFlash | Chrome based screenshot API | apiKey |
Yes | Unknown |
| apilayer userstack | User-Agent String Lookup JSON API | OAuth |
Yes | Unknown |
| APIs.guru | Wikipedia for Web APIs | No | Yes | Unknown |
| Azure DevOps | The Azure DevOps basic components | apiKey |
Yes | Unknown |
| Base | Building quick backends | apiKey |
Yes | Yes |
| Beeceptor | Build a mock Rest API endpoint in seconds | No | Yes | Yes |
| Bitbucket | Bitbucket API | OAuth |
Yes | Unknown |
| Blague.xyz | The biggest FR jokes API | apiKey |
Yes | Yes |
| Blitapp | Schedule screenshots of web pages | apiKey |
Yes | Unknown |
| Blynk-Cloud | Control IoT Devices from Blynk IoT Cloud | apiKey |
No | Unknown |
| Bored | Find random activities to fight boredom | No | Yes | Unknown |
| Brainshop.ai | Make A Free A.I Brain | apiKey |
Yes | Yes |
| Browshot | Make screenshots of web pages | apiKey |
Yes | Yes |
| CDNJS | Library info on CDNJS | No | Yes | Unknown |
| Changelogs.md | Structured changelog metadata | No | Yes | Unknown |
| Ciprand | Secure random string generator | No | Yes | No |
| Cloudflare Trace | Get IP Address, Timestamp, User Agent, etc | No | Yes | Yes |
| Codex | Online Compiler for Various Languages | No | Yes | Unknown |
| Contentful Images | Used to retrieve and apply transformations to images | apiKey |
Yes | Yes |
| CORS Proxy | Get around CORS error | No | Yes | Yes |
| CountAPI | Free and simple counting service | No | Yes | Yes |
| Databricks | Service to manage your databricks account | apiKey |
Yes | Yes |
| DigitalOcean Status | Status of all DigitalOcean services | No | Yes | Unknown |
| Docker Hub | Interact with Docker Hub | apiKey |
Yes | Yes |
| DomainDb Info | Domain name search | No | Yes | Unknown |
| ExtendsClass JSON Storage | A simple JSON store API | No | Yes | Yes |
| GeekFlare | Website testing and monitoring methods | apiKey |
Yes | Unknown |
| Genderize.io | Estimates a gender from a first name | No | Yes | Yes |
| GETPing | Trigger an email notification | apiKey |
Yes | Unknown |
| Ghost | Get Published content into your Website | apiKey |
Yes | Yes |
| GitHub | Make use of GitHub repositories | OAuth |
Yes | Yes |
| Gitlab | Automate GitLab interaction | OAuth |
Yes | Unknown |
| Gitter | Chat for Developers | OAuth |
Yes | Unknown |
| Glitterly | Image generation API | apiKey |
Yes | Yes |
| Google Docs | API to read, write, and format Google Docs | OAuth |
Yes | Unknown |
| Google Firebase | Google’s mobile application development platform | apiKey |
Yes | Yes |
| Google Fonts | Metadata for all families served by Google Fonts | apiKey |
Yes | Unknown |
| Google Keep | API to read, write, and format Google Keep notes | OAuth |
Yes | Unknown |
| Google Sheets | API to read, write, and format Google Sheets | OAuth |
Yes | Unknown |
| Google Slides | API to read, write, and format Google Slides | OAuth |
Yes | Unknown |
| Gorest | Online REST API for Testing and Prototyping | OAuth |
Yes | Unknown |
| Hasura | GraphQL and REST API Engine | apiKey |
Yes | Yes |
| Heroku | REST API to programmatically manage Heroku | OAuth |
Yes | Yes |
| host-t.com | Basic DNS query via HTTP GET request | No | Yes | No |
| Host.io | Domains Data API for Developers | apiKey |
Yes | Yes |
| HTTP2.Pro | Test endpoints for HTTP/2 protocol support | No | Yes | Unknown |
| Httpbin | (Entry truncated in original source) | – | – | – |
Note: The source document was truncated at this point. The list continues with categories such as Dictionaries, Documents & Productivity, Email, Entertainment, Environment, Events, Finance, Food & Drink, Games & Comics, Geocoding, Government, Health, Jobs, Machine Learning, Music, News, Open Data, Open Source Projects, Patent, Personality, Phone, Photography, Programming, Science & Math, Security, Shopping, Social, Sports & Fitness, Test Data, Text Analysis, Tracking, Transportation, URL Shorteners, Vehicle, Video, and Weather.
