# Annotations Rest API (v3) and additional improvements

New REST API endpoints have been added to manage annotation categories and access new annotation fields like end date, along with several quality of life improvements for annotations.

Source: https://amplitude.com/en-us/releases/annotations-rest-api-v3-and-additional-improvements

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AnalyticsDec 29, 2025

[\[All updates\]](/releases)

### Annotations Rest API (v3) and additional improvements

Daniel Jih

**Description:**

- We added new REST API endpoints to manage annotation categories and access new annotation fields (like end date). HC Docs have been updated with the new API.
- Quality of life improvement: allow bulk copying annotations across projects (from the manage annotations table in project settings). This was a requested feature.
- Quality of life improvement: hovering over an annotation in the popup will highlight its corresponding date line in the chart. If the annotation spans a range, the entire range will be highlighted. This will help customers that have a lot of annotations to comb through in their charts.
- Quality of life improvement: Annotation categories for portfolio apps have a tooltip to show the category's source app (to help customers pick the correct one in chart view).

A number of our customers actually use our REST API to manage a large number of annotations. We wanted to let them access the new category functionality that we added over the summer. Also made a number of quality of life improvements to improve usability.

**Where:** Generally available everywhere.

**Available in EUDC:** Yes

**When:** Already live.

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