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good APIs for mashups

This list has been superseded by Public APIs. Check there for APIs with Auth: No, HTTPS and CORS Yes.

List of data APIs that require no server-side auth or private credentials, and are thus good for small browser-only JS projects.

See also

More lists

Client-side auth


  • JSONProxy
  • Kimono – "Turn websites into structured APIs from your browser in seconds"
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sunwooz commented Feb 14, 2013

Hey Aidan! I'm glad to see you're still helping newbs like me. Opentok API for a videochat application.

I'll update this as I remember more.

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I really like Kinetic.js for html5 games and animations. The concepts are based on flash and its very user friendly to start.

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afeld commented Feb 14, 2013

@softprops the docs make exposing the API key sound scary... does it just identify the user, or actually allow the API to make changes on behalf of them? (I would hope the former)

@pencilking2002 sure, tons of good JS libraries for widgets, drawing, animation, etc. - I just meant REST APIs for getting 3rd-party data

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UriWeg commented Feb 14, 2013


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jkwade commented Feb 14, 2013

Balanced isn't read-only, but it's a REST API sans OAuth:

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shurane commented Feb 14, 2013 looks a bit promising too. It's... sort of like an API for APIs. but allowing for easy mashing up.

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afuchs commented Feb 14, 2013

You can use Aviary to edit any photo with a public url (from tumblr, foursquare, facebook, flickr, etc). On save, it spits back out a url to the saved image which you can publish back to the platform.

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Would love to see some SendGrid action on here too.

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We have a number of no-auth endpoints at (anything that has Token:None on this list )

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jedahan commented Apr 5, 2013 has metropolitan museum of art data, all from their website :)

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Should Twitter's REST API still be on here, given it requires authentication now?

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afeld commented Nov 14, 2015

@philgyford Good catch, thanks!

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@afeld thanks for this - helpful!

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OpenUV - Global UV Index Forecast API for Sun Safety information:

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