---
title: "Changes to Retrieve Stream"
method: POST
path: "/v1/runs/{run_id}/stream"
---

# Changes to Retrieve Stream

`POST /v1/runs/{run_id}/stream`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 7 of 36 revisions.

- **2025-10-08** `b82cbf314740`: 2 info
- **2025-10-08** `1bed3816dfe2`: 6 info
- **2025-10-07** `42a9cd544e13`: 1 info
- **2025-10-07** `1ba60b114a27`: 1 info
- **2025-10-03** `f0554a0bf8b2`: 5 info
- **2025-09-29** `ac8e1eb68404`: 1 info
- **2025-09-24** `68c3c741b873`: 1 breaking, 1 info

## Changes

- **2025-10-08** `b82cbf314740`: 2 info
  - added the optional property `oneOf[subschema #5: ToolCallMessage]/tool_calls` to the response with the `200` status
  - response property `oneOf[subschema #5: ToolCallMessage]/tool_call` deprecated
- **2025-10-08** `1bed3816dfe2`: 6 info
  - added the optional property `oneOf[subschema #6: ToolReturnMessage]/tool_returns` to the response with the `200` status
  - response property `oneOf[subschema #6: ToolReturnMessage]/status` deprecated
  - response property `oneOf[subschema #6: ToolReturnMessage]/stderr` deprecated
  - response property `oneOf[subschema #6: ToolReturnMessage]/stdout` deprecated
  - response property `oneOf[subschema #6: ToolReturnMessage]/tool_call_id` deprecated
  - response property `oneOf[subschema #6: ToolReturnMessage]/tool_return` deprecated
- **2025-10-07** `42a9cd544e13`: 1 info
  - added the optional property `oneOf[subschema #12: LettaUsageStatistics]/steps_messages/anyOf[subschema #1]/items/items/tool_returns/anyOf[subschema #1]/items/func_response` to the response with the `200` status
- **2025-10-07** `1ba60b114a27`: 1 info
  - added the optional property `oneOf[subschema #12: LettaUsageStatistics]/steps_messages/anyOf[subschema #1]/items/items/tool_returns/anyOf[subschema #1]/items/tool_call_id` to the response with the `200` status
- **2025-10-03** `f0554a0bf8b2`: 5 info
  - added the optional property `oneOf[subschema #12: LettaUsageStatistics]/steps_messages/anyOf[subschema #1]/items/items/content/anyOf[subschema #1]/items/oneOf[subschema #1: TextContent]/signature` to the response with the `200` status
  - added the optional property `oneOf[subschema #12: LettaUsageStatistics]/steps_messages/anyOf[subschema #1]/items/items/content/anyOf[subschema #1]/items/oneOf[subschema #3: ToolCallContent]/signature` to the response with the `200` status
  - added the optional property `oneOf[subschema #12: LettaUsageStatistics]/steps_messages/anyOf[subschema #1]/items/items/content/anyOf[subschema #1]/items/oneOf[subschema #7: OmittedReasoningContent]/signature` to the response with the `200` status
  - added the optional property `oneOf[subschema #2: UserMessage]/content/anyOf[subschema #1]/items/oneOf[subschema #1: TextContent]/signature` to the response with the `200` status
  - added the optional property `oneOf[subschema #7: AssistantMessage]/content/anyOf[subschema #1]/items/oneOf[subschema #1: TextContent]/signature` to the response with the `200` status
- **2025-09-29** `ac8e1eb68404`: 1 info
  - added the optional property `oneOf[subschema #12: LettaUsageStatistics]/steps_messages/anyOf[subschema #1]/items/items/run_id` to the response with the `200` status
- **2025-09-24** `68c3c741b873`: 1 breaking, 1 info
  - added `#/components/schemas/SummarizedReasoningContent` to the `oneOf[subschema #12: LettaUsageStatistics]/steps_messages/anyOf[subschema #1]/items/items/content/anyOf[subschema #1]/items/` response property `oneOf` list for the response status `200`
  - added `summarized_reasoning` discriminator mapping keys to the `oneOf[subschema #12: LettaUsageStatistics]/steps_messages/anyOf[subschema #1]/items/items/content/anyOf[subschema #1]/items/` response property for the response status `200`

---

[Operation](https://skmtc.dev/yu-code666/apis/letta-api/docs/v1/runs/:run_id/stream/post.md) - [API](https://skmtc.dev/yu-code666/apis/letta-api.md) - [Page](https://skmtc.dev/yu-code666/apis/letta-api/changes/v1/runs/:run_id/stream/post)