---
title: "Get session by ID or session_id"
method: GET
path: "/v1/sessions/{session_identifier}"
tags: ["sessions"]
---

# Get session by ID or session_id

`GET /v1/sessions/{session_identifier}`

## Path parameters

- `session_identifier` string, required — The session identifier: either a GlobalID or user-provided session_id string.

## Response `200`

Successful Response

- GetSessionResponseBody
  - `data` SessionData, required
    - `id` string, required
    - `session_id` string, required
    - `project_id` string, required
    - `start_time` string, date-time, required
    - `end_time` string, date-time, required
    - `traces` SessionTraceData[], required
      - `id` string, required
      - `trace_id` string, required
      - `start_time` string, date-time, required
      - `end_time` string, date-time, required
    - `token_count_prompt` integer — Cumulative prompt token count across all spans in the session.
    - `token_count_completion` integer — Cumulative completion token count across all spans in the session.
    - `token_count_total` integer — Cumulative total token count across all spans in the session (prompt + completion).

## Other responses

- `403` — Forbidden
- `404` — Not Found
- `422` — Unprocessable Entity

---

[API](https://skmtc.net/arize-ai/apis/arize-phoenix-rest-api.md) · [All operations](https://skmtc.net/arize-ai/apis/arize-phoenix-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/arize-ai/arize-phoenix-rest-api/versions/a14d8ad6f708/schema)