curl -X GET 'https://api.openai.com/v1/conversations/conv_123/items?limit=20&order=asc&after=example-after&include=example' \
  -H "Authorization: Bearer $OPENAI_API_KEY"

# GET /conversations/{conversation_id}/items (OpenAI API)
Base URL: https://api.openai.com/v1
Auth: Authorization; OpenAI API key; required.
Last verified: 2026-10-20

> List items

## 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/conversations/conv_123/items?limit=20&order=asc&after=example-after&include=example' \
  -H "Authorization: Bearer $OPENAI_API_KEY"

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| conversation_id | path | string | Yes | The ID of the conversation to list items for. |
| limit | query | integer | No | A limit on the number of objects to be returned. Limit can range between 1 an... |
| order | query | string | No | The order to return the input items in. Default is `desc`. - `asc`: Return th... |
| after | query | string | No | An item ID to list items after, used in pagination.  |
| include | query | string[] | No | Specify additional output data to include in the model response. Currently su... |

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

---
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GET

GET /conversations/{conversation_id}/items — OpenAI API

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

OpenAI API

List items

Base URL: https://api.openai.com/v1
Auth: Authorization: Bearer <OPENAI_API_KEY>
Last verified: 2026-10-20 · upstream hash matched

Actions Try in browser→

Agents: curl -H "Accept: text/markdown" this URL
→ 284 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/conversations/conv_123/items?limit=20&order=asc&after=example-after&include=example' \  -H "Authorization: Bearer $OPENAI_API_KEY"

Parameters

Name	In	Type	Required	Description
conversation_id	path	string	Yes	The ID of the conversation to list items for.
limit	query	integer	No	A limit on the number of objects to be returned. Limit can range between 1 and 100, and the default is 20.
order	query	string	No	The order to return the input items in. Default is `desc`. - `asc`: Return the input items in ascending order. - `desc`: Return the input items in descending order.
after	query	string	No	An item ID to list items after, used in pagination.
include	query	string[]	No	Specify additional output data to include in the model response. Currently supported values are: - `web_search_call.action.sources`: Include the sources of the web search tool call. - `code_interpreter_call.outputs`: Includes the outputs of python code execution in code interpreter tool call items. - `computer_call_output.output.image_url`: Include image urls from the computer call output. - `file_search_call.results`: Include the search results of the file search tool call. - `message.input_image.image_url`: Include image urls from the input message. - `message.output_text.logprobs`: Include logprobs with assistant messages. - `reasoning.encrypted_content`: Includes an encrypted version of reasoning tokens in reasoning item outputs. This enables reasoning items to be used in multi-turn conversations when using the Responses API statelessly (like when the `store` parameter is set to `false`, or when an organization is enrolled in the zero data retention program).

Response 200 OK

{
  "object": "list",
  "data": [
    {
      "type": "message",
      "id": "string",
      "status": "in_progress",
      "role": "unknown",
      "content": [
        {
          "type": "input_text",
          "text": "string",
          "prompt_cache_breakpoint": {
            "mode": "[recursive or deeply nested schema]"
          }
        }
      ],
      "phase": "commentary"
    }
  ],
  "has_more": true,
  "first_id": "string",
  "last_id": "string"
}

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