List of actually free and open (no auth needed) APIs

An API (Application Programming Interface) allows you to send requests to a remote data set, like querying a database. The response will then be delivered back to your own application in a standardized format. This is very helpful when you're building an app or pulling metrics for reporting, because it means you can focus on presenting information in a unique or useful manner, rather than developing the underlying data set. For example, most weather apps get their weather forecast data from a weather API, rather than building weather stations themselves.

Of course, the fastest way to understand how APIs work is to try them out. While most APIs require access via API keys (which are similar to passwords), or have complex methods of authentication and authorization, there are also quite a few APIs with no requirements at all. This is especially useful for beginners, as it means you can start exploring different APIs right away.

List of Open APIs

The APIs below can be accessed using your web browser, cURL, API tools like Swagger and Postman, or Mixed Analytics' own API Connector for Google Sheets. Just click the sample URLs in the table to see their response in your browser, or copy/paste the URLs and run in your tool of choice. You can also modify the URLs to retrieve additional information (consult the documentation links for specifics).

17Timer!Weather forecasts
2Agify.ioPredict age based on a name
3Archive.orgLarge public digital archive
4BoredActivity suggestions
5Cat FactsList of cat facts
6CoinDeskBitcoin price index
7CoinGeckoCryptocurrency data
8CoinpaprikaCryptocurrency data
9Data USAUS public data
10DogsRandom dog images
11ExchangeRate-APIExchange rates
12Financial Modeling PrepStocks and finance
13FreeGeoIPGeoIP info
14Genderize.ioPredict gender based on a name
15IP 2 CountryGet country for IP address
16IPifyGet your public IP address
17IPinfoInformation about IP addresses
18iTunes SearchiTunes and Apple Book Store content
19JikanUnofficial MyAnimeList API
22MakeupMakeup brands and product info
23MusicBrainzMusic data
24Nager.DatePublic holidays
25Nationalize.ioPredict nationality based on a name
26Open Brewery DBBreweries
27Open Food FactsData on food products
28Open LibraryInformation about books
29openFDAFederal Drug Administration data
30Public APIsList public APIs
31PunkAPIBeer recipes
32RandomUserFake user data generator
33Recipe PuppyRecipes,garlic&q=omelet
34REST CountriesCountry information
35TeleportLocation and quality of life data
36TVMazeTV show information girls
37UI NamesFake username generator
38Universities ListUniversities
39xkcdxkcd comics
40ZippopotamZip code information

More, more!

Want even more APIs? Check out these directories:


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