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).

#API NAMEDESCRIPTIONSAMPLE URL
17Timer!Weather forecasts
2Agify.ioPredict age based on a namehttps://api.agify.io?name=bella
3Archive.orgLarge public digital archive
4BoredActivity suggestionshttps://www.boredapi.com/api/activity
5Cat FactsList of cat factshttps://cat-fact.herokuapp.com/facts
6CoinDeskBitcoin price indexhttps://api.coindesk.com/v1/bpi/currentprice.json
7CoinGeckoCryptocurrency datahttps://api.coingecko.com/api/v3/exchange_rates
8CoinpaprikaCryptocurrency datahttps://api.coinpaprika.com/v1/coins/btc-bitcoin
9Data USAUS public datahttps://datausa.io/api/data?drilldowns=Nation&measures=Population
10DogsRandom dog imageshttps://dog.ceo/api/breeds/image/random
11ExchangeRate-APIExchange rateshttps://api.exchangerate-api.com/v4/latest/USD
12Financial Modeling PrepStocks and finance
13FreeGeoIPGeoIP infohttps://freegeoip.app/json/
14Genderize.ioPredict gender based on a namehttps://api.genderize.io?name=scott
15IP 2 CountryGet country for IP addresshttps://api.ip2country.info/ip?161.185.160.93
16IPifyGet your public IP addresshttps://api.ipify.org?format=json
17IPinfoInformation about IP addresseshttps://ipinfo.io/161.185.160.93/geo
18iTunes SearchiTunes and Apple Book Store contenthttps://itunes.apple.com/search?term=radiohead
19JikanUnofficial MyAnimeList APIhttps://api.jikan.moe/v3/search/anime?q=naruto
20JokeAPIJokeshttps://sv443.net/jokeapi/category/Any
21JokesJokeshttps://official-joke-api.appspot.com/jokes/ten
22MakeupMakeup brands and product info
23MusicBrainzMusic data
24Nager.DatePublic holidayshttps://date.nager.at/api/v2/publicholidays/2020/US
25Nationalize.ioPredict nationality based on a namehttps://api.nationalize.io?name=michael
26Open Brewery DBBrewerieshttps://api.openbrewerydb.org/breweries
27Open Food FactsData on food productshttps://world.openfoodfacts.org/api/v0/product/737628064502.json
28Open LibraryInformation about bookshttp://openlibrary.org/api/volumes/brief/isbn/9780525440987.json
29openFDAFederal Drug Administration datahttps://api.fda.gov/food/enforcement.json?limit=10
30Public APIsList public APIshttps://api.publicapis.org/entries
31PunkAPIBeer recipeshttps://api.punkapi.com/v2/beers
32RandomUserFake user data generatorhttps://randomuser.me/api/
33Recipe PuppyRecipeshttp://www.recipepuppy.com/api/?i=onions,garlic&q=omelet
34REST CountriesCountry informationhttps://restcountries.eu/rest/v2/all
35TeleportLocation and quality of life datahttps://api.teleport.org/api/urban_areas/teleport%3A9q8yy/scores/
36TVMazeTV show informationhttp://api.tvmaze.com/search/shows?q=golden girls
37UI NamesFake username generatorhttps://uinames.com/api/?amount=25
38Universities ListUniversitieshttp://universities.hipolabs.com/search?country=United+Kingdom
39xkcdxkcd comicshttp://xkcd.com/info.0.json
40ZippopotamZip code informationhttps://api.zippopotam.us/us/90210

More, more!

Want even more APIs? Check out these directories:

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