IPstack
by APILayer
Locate and Identify Website Visitors by IP Address
Run in Postman →Find a free API for your next project
The official directory of the public-apis list: free APIs for developers, tested every day and filterable by API key, HTTPS and CORS.
The official site of public-apis, the 3rd most-starred repository on GitHub with 497.5K ★.
Know an API that’s missing? Submit it with a pull request ↗ · how to submit
Featured from 
Production-grade APIs with a free tier and one shared API key.
Marketstack
by APILayer
Free, easy-to-use REST API interface delivering worldwide stock market data in JSON format
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Weatherstack
by APILayer
Retrieve instant, accurate weather information for any location in the world in lightweight JSON format
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Fixer
by APILayer
Fixer is a simple and lightweight API for current and historical foreign exchange (forex) rates.
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Aviationstack
by APILayer
Free, real-time flight status and global Aviation data API
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Zenserp
by APILayer
Fast, Accurate Google Search Data Built for Developers
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Screenshotlayer
by APILayer
Capture highly customizable screenshots of any website
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Exchangerate Host
by APILayer
Real-time current and historical foreign exchange and crypto rates
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Mailboxlayer
by APILayer
Email Validation & Verification JSON API for Developers
Documentation →More APILayer APIs
CurrencylayerLive and historical exchange rates and currency conversionExchange Rates APIReal-time and historical rates for 170+ currencies
ipapiIP address lookup and geolocation for IPv4 and IPv6
PositionstackForward and reverse geocoding for locations worldwide
NumverifyPhone number validation with carrier, location and line type
CoinlayerReal-time and historical cryptocurrency rates
MediastackLive news and blog articles from 7,500+ sources
SerpstackReal-time Google search results data
ScrapestackWeb scraping with proxies, CAPTCHA handling and IP rotation
ZenscrapeWeb scraping API for fast, reliable data extraction
UserstackUser-Agent lookup for device, browser and OS detection
PdflayerConvert URLs or raw HTML to PDF
VatlayerVAT number validation and EU VAT rates
CountrylayerCountry information as lightweight JSON
LanguagelayerLanguage detection for 173 languages
Browse by category
All categories →- Animals24 APIs
- Anime20 APIs
- Anti-Malware17 APIs
- Art & Design33 APIs
- Authentication & Authorization6 APIs
- Blockchain19 APIs
- Books26 APIs
- Business54 APIs
- Calendar23 APIs
- Cloud Storage & File Sharing20 APIs
- Continuous Integration6 APIs
- Cryptocurrency106 APIs
- Currency Exchange31 APIs
- Data Validation17 APIs
- Development234 APIs
- Dictionaries16 APIs
- Documents & Productivity57 APIs
- Email43 APIs
- Entertainment19 APIs
- Environment33 APIs
- Events6 APIs
- Finance109 APIs
- Food & Drink36 APIs
- Games & Comics114 APIs
- Geocoding117 APIs
- Government137 APIs
- Health52 APIs
- Jobs45 APIs
- Machine Learning58 APIs
- Music38 APIs
- News26 APIs
- Open Data90 APIs
- Open Source Projects11 APIs
- Patent5 APIs
- Personality28 APIs
- Phone9 APIs
- Photography39 APIs
- Programming6 APIs
- Science & Math60 APIs
- Security65 APIs
- Shopping34 APIs
- Social59 APIs
- Sports & Fitness73 APIs
- Test Data37 APIs
- Text Analysis20 APIs
- Tracking11 APIs
- Transportation100 APIs
- URL Shorteners21 APIs
- Vehicle19 APIs
- Video60 APIs
- Weather46 APIs
Endless Opportunities with Our Full API Suite
From currencies to weather, PDFs to more, our API marketplace has it all. Start exploring today and find the perfect building blocks for your next project.
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Anime
Art & Design
Currency Exchange
Cryptocurrency
Music
Sports & Fitness
Development
Weather
Machine LearningMCP servers for AI agents
40 Model Context Protocol servers you can install into Claude, Cursor or VS Code — including IPstack MCP, Agent Nexus, BlockVectra.
Frequently asked questions
What is Public APIs?
Public APIs is a free, searchable directory of 2,335 public APIs across 51 categories, from weather and finance to animals and machine learning. Every listing shows whether the API needs authentication, supports HTTPS and allows CORS, with a link to its documentation. The list is curated by the open-source public-apis community and maintained with APILayer.
Are the APIs listed here free to use?
Yes. Every API in the directory is free to use or has a free tier. Some require you to sign up for an API key, and paid plans may unlock higher rate limits, but you can start building with all of them at no cost.
Which APIs don't require an API key?
1,136 of the 2,335 APIs need no authentication at all, so you can call them immediately without signing up. Use the "No auth" filter on any category page, or browse all of them at /search?auth=none.
What does CORS mean for a public API?
CORS (Cross-Origin Resource Sharing) decides whether a browser lets JavaScript on your website call the API directly. If CORS is enabled, you can fetch from front-end code; if not, call the API from a server or serverless function instead. 995 APIs in the directory are confirmed to support CORS.
How do I choose the right API for my project?
Start from a category, then filter by authentication, HTTPS and CORS to match your stack. Prefer APIs with HTTPS (required for production), check the documentation for rate limits and terms of use, and pick a no-auth API if you're prototyping.
How do I add or submit a new API?
Open a pull request on the public-apis GitHub repository (https://github.com/public-apis/public-apis) that adds your API to the right category table, following the contribution guide (https://github.com/public-apis/public-apis/blob/master/CONTRIBUTING.md). Once it's merged, it appears here on the next data sync. Step-by-step instructions: https://publicapis.lol/submit.
Is there a JSON API for this directory?
Yes. GET /api/apis returns the catalog as JSON and accepts the same filters as search: q, category, auth, https, cors and page. It needs no key and is handy for building your own tools on top of the list.
What are MCP servers?
MCP (Model Context Protocol) servers let AI agents such as Claude, Cursor or VS Code call APIs as tools. The directory lists 40 MCP servers with their transport (stdio or HTTP), authentication and install links.
Who maintains Public APIs?
The list comes from the community-curated public-apis project on GitHub, the 3rd most-starred repository on the platform, and is maintained together with APILayer (https://apilayer.com/), which offers a unified suite of production APIs with one account and one API key.
