curl -X GET 'https://api.openai.com/v1/agents/sessions/session-id/traces?limit=20&order=asc&after=example-after' \
  -H "Authorization: Bearer $OPENAI_API_KEY"

# GET /agents/sessions/{session_id}/traces (OpenAI API)
Base URL: https://api.openai.com/v1
Auth: Authorization; OpenAI API key; required.
Last verified: 2026-10-01

> List agent session traces

## Critical Gotchas
* The Responses API is the primary interface for new text and tool workflows; Chat Completions remains a separate compatibility API.
* Audio transcription uploads use multipart form data rather than a JSON request body.

## cURL
curl -X GET 'https://api.openai.com/v1/agents/sessions/session-id/traces?limit=20&order=asc&after=example-after' \
  -H "Authorization: Bearer $OPENAI_API_KEY"

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| session_id | path | string | Yes | The ID of the session. |
| limit | query | integer | No | The maximum number of resources to return, between 1 and 100. Defaults to 20. |
| order | query | string | No | The order in which resources are returned. Defaults to `desc`. |
| after | query | string | No | Return resources after this resource ID in the selected order. |

## Response example
{"object":"list","data":[{}]}

---
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GET

GET /agents/sessions/{session_id}/traces — OpenAI API

OpenAI API key (required); https://api.openai.com/v1

OpenAI API

List agent session traces

Base URL: https://api.openai.com/v1
Auth: Authorization: Bearer <OPENAI_API_KEY>
Last verified: 2026-10-01 · upstream hash matched

Actions Try in browser→

Agents: curl -H "Accept: text/markdown" this URL
→ 244 tokens · Vary: Accept

Critical gotchas

The Responses API is the primary interface for new text and tool workflows; Chat Completions remains a separate compatibility API.

Audio transcription uploads use multipart form data rather than a JSON request body.

cURL

curl -X GET 'https://api.openai.com/v1/agents/sessions/session-id/traces?limit=20&order=asc&after=example-after' \  -H "Authorization: Bearer $OPENAI_API_KEY"

Parameters

Name	In	Type	Required	Description
session_id	path	string	Yes	The ID of the session.
limit	query	integer	No	The maximum number of resources to return, between 1 and 100. Defaults to 20.
order	query	string	No	The order in which resources are returned. Defaults to `desc`.
after	query	string	No	Return resources after this resource ID in the selected order.

Response 200 OK

{
  "object": "list",
  "data": [
    {
      "id": "string",
      "object": "agent.session.trace",
      "session_id": "string",
      "created_at": 0,
      "otlp": {}
    }
  ],
  "first_id": "string",
  "last_id": "string",
  "has_more": true
}

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