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API integration and more for 37signals products: Basecamp, Highrise, Campfire, Backpack
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37signals APIs

Looking to integrate with a 37signals product? We've got everything you need here. From sample code to detailed API documentation, you'll be up and running in no time.

Where do I start?

Want to get started with API integration? Here's a quick check list:

  1. Register your app or update your already registered app to access more products.
  2. Review the brand guidelines for rules on naming and marketing your app
  3. Read up on how to authenticate your app with our products.
  4. Peruse the API docs for the product you need to work with
  5. Join the API mailing list to talk to others using the APIs and give us feedback!

API Documentation

Need to look up the API documentation for a product? There's a repo for each:


Logging your users into our products is supported through OAuth 2. Several apps support login via API tokens and HTTP Basic Authentication as well.

We have a detailed guide for authenticating your users with our apps.

Brand Guidelines

Have questions on how to name and publicize your app? Our brand guidelines have some basic answers for you. If you have a more detailed question, just open up a support ticket and we'll sort it out!

Official logos

This repo contains official high quality EPS logos for each product, which we encourage use of to promote your app!

Help us make it better

Please tell us how we can make the APIs better. If you have a specific feature request or if you found a bug, please open a support ticket. Also, feel free to fork these docs and send a pull request with improvements!

To talk with us and other developers about the API, subscribe to the 37signals-api mailing list.

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