---
title: "Changes to Get session by ID or session_id"
method: GET
path: "/v1/sessions/{session_identifier}"
---

# Changes to Get session by ID or session_id

`GET /v1/sessions/{session_identifier}`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 2 of 71 revisions.

- **2026-05-05** `29fe492bf1e2` — 3 info
- **2026-04-29** `c81391216eb5` — 3 warning

## Changes

- **2026-05-05** `29fe492bf1e2` — 3 info
  - added the optional property `data/token_count_completion` to the response with the `200` status
  - added the optional property `data/token_count_prompt` to the response with the `200` status
  - added the optional property `data/token_count_total` to the response with the `200` status
- **2026-04-29** `c81391216eb5` — 3 warning
  - removed the optional property `data/token_count_completion` from the response with the `200` status
  - removed the optional property `data/token_count_prompt` from the response with the `200` status
  - removed the optional property `data/token_count_total` from the response with the `200` status

---

[Operation](https://skmtc.dev/arize-ai/apis/arize-phoenix-rest-api/docs/v1/sessions/:session_identifier/get.md) · [API](https://skmtc.dev/arize-ai/apis/arize-phoenix-rest-api.md) · [Page](https://skmtc.dev/arize-ai/apis/arize-phoenix-rest-api/changes/v1/sessions/:session_identifier/get)