Changelog

added

New: Source Description Changes Endpoint

A new endpoint lets you quickly check whether sources have been changed since a given timestamp. This is especially useful if your application stores local copies of sources and needs to keep that data up to date.

improved

August 25 New Updates and bug fixes

  • Issue where Tree search returned link with duplicate query parameters that caused errors.
  • Tree Change History now supports custom events.
  • Various optimizations and improvements to infrastructure.
added

New: Tree to Tree Linking

A new API feature is now available to link matching persons across FamilySearch trees. See the Tree to Tree Linking guide to learn more. This feature is in beta, and the interface may change over the next 60 days.

July 28, 2025 Release

  • Added support for tree person reference in Tree Change History and Person Change History.
  • Updated OpenAPI Identity endpoints documentation.

July 21, 2025 Release

  • Update dependencies
  • Internal updates and improvements.

2025 Q2 FamilySearch Developer Newsletter

This quarter’s newsletter highlights exciting updates to our developer documentation and recommends using an API client to simplify integration and troubleshooting.