Build apps. Connect families.

FamilySearch offers developers a way to integrate web, desktop, and mobile apps with its collaborative Family Tree. Learn more.

Getting Started includes developer sign-up, community forum (GetHelp), getting started instructions, app key registration and tracking.

Change Log provides changes to documentation for API, Certification, Guides,and Tools. Review the recent changes often.

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Check out the latest creations of fellow developers using the FamilySearch API.

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Sample App

The Sample App demonstrates common API uses cases such as searching for a person and creating people and relationships.