# /api/public/dataset-run-items stops working

Calls to /api/public/dataset-run-items on Langfuse API stop working on November 16, 2026.

On November 16, 2026, the /api/public/dataset-run-items endpoint will stop working on Langfuse Cloud. Any calls sent to this endpoint after that date will fail.

- API: Langfuse API (cloud.langfuse.com)
- Kind: Endpoint removal
- Announced: August 17, 2026
- Takes effect: November 16, 2026
- Calls after that day: fail
- Calls it hits: `/api/public/dataset-run-items`
- Source: [Announcement](https://langfuse.com/faq/all/deprecated-api-migration)
- Page: https://www.okapi.bot/providers/langfuse/breaking-changes/api-public-dataset-run-items-stops-working/

## What to use instead

Read data using GET /api/public/experiment-items instead. To create experiment data, use the SDK's experiment runner or send POST /api/public/otel/v1/traces with experiment attributes.

## Langfuse API's words

> Deprecated: Langfuse Cloud serves these endpoints until November 16, 2026 ( 2026-11-16 ) ; migrate to v4 before this date. GET /datasets/{datasetName}/runs