---
title: "Changes to Preview Raw Payload"
method: POST
path: "/v1/agents/{agent_id}/messages/preview-raw-payload"
---

# Changes to Preview Raw Payload

`POST /v1/agents/{agent_id}/messages/preview-raw-payload`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 1 of 36 revisions.

- **2025-10-03** `f0554a0bf8b2` — 6 info

## Changes

- **2025-10-03** `f0554a0bf8b2` — 6 info
  - added the new optional request property `anyOf[subschema #1: LettaRequest]/messages/items/anyOf[subschema #1: MessageCreate]/content/anyOf[subschema #1]/items/oneOf[subschema #1: TextContent]/signature`
  - added the new optional request property `anyOf[subschema #1: LettaRequest]/messages/items/anyOf[subschema #1: MessageCreate]/content/anyOf[subschema #1]/items/oneOf[subschema #3: ToolCallContent]/signature`
  - added the new optional request property `anyOf[subschema #1: LettaRequest]/messages/items/anyOf[subschema #1: MessageCreate]/content/anyOf[subschema #1]/items/oneOf[subschema #7: OmittedReasoningContent]/signature`
  - added the new optional request property `anyOf[subschema #2: LettaStreamingRequest]/messages/items/anyOf[subschema #1: MessageCreate]/content/anyOf[subschema #1]/items/oneOf[subschema #1: TextContent]/signature`
  - added the new optional request property `anyOf[subschema #2: LettaStreamingRequest]/messages/items/anyOf[subschema #1: MessageCreate]/content/anyOf[subschema #1]/items/oneOf[subschema #3: ToolCallContent]/signature`
  - added the new optional request property `anyOf[subschema #2: LettaStreamingRequest]/messages/items/anyOf[subschema #1: MessageCreate]/content/anyOf[subschema #1]/items/oneOf[subschema #7: OmittedReasoningContent]/signature`

---

[Operation](https://skmtc.dev/yu-code666/apis/letta-api/docs/v1/agents/:agent_id/messages/preview-raw-payload/post.md) · [API](https://skmtc.dev/yu-code666/apis/letta-api.md) · [Page](https://skmtc.dev/yu-code666/apis/letta-api/changes/v1/agents/:agent_id/messages/preview-raw-payload/post)