---
title: "Changes to Annotate a batch of project spans"
method: POST
path: "/v2/spans/annotate"
---

# Changes to Annotate a batch of project spans

`POST /v2/spans/annotate`

> Every recorded change to this operation, newest first.
> 48 revisions in range; 1 not diffed.

## Timeline

Changed in 2 of 48 revisions.

- **2026-09-01** `4087706f0e01`: 1 info
- **2026-08-06** `4f94eb2fd1ab`: 1 info

## Changes

- **2026-09-01** `4087706f0e01`: 1 info
  - added the new `SESSION` enum value to the request property `granularity/allOf[#/components/schemas/RecordGranularity]/`
- **2026-08-06** `4f94eb2fd1ab`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/arize-ai/apis/arize-rest-api/docs/v2/spans/annotate/post.md) - [API](https://skmtc.dev/arize-ai/apis/arize-rest-api.md) - [Page](https://skmtc.dev/arize-ai/apis/arize-rest-api/changes/v2/spans/annotate/post)