Reference
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Inside our APIs

Here’s where you’ll find detailed technical reference documentation for Fitbit APIs. Fitbit offers three types of APIs for building Fitbit device apps and clock faces:

Device API

Click on any of the links to the left to access detailed technical information.

Settings API

Fitbit developers can make their application configurable by users, by creating application settings.

Companion API

Get detailed technical information about the Fitbit Companion APIs.

Web API

Fitbit provides a Web API for accessing data from Fitbit activity trackers, Aria scale, and manually entered logs.