---
title: "Changes to Send Agent message"
method: POST
path: "/v1/agent-chats/{chatId}/messages"
---

# Changes to Send Agent message

`POST /v1/agent-chats/{chatId}/messages`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 2 of 15 revisions.

- **2026-10-31** `a3f4100e14c9`: 2 breaking, 11 info
- **2026-10-23** `e3427b73824e`: 1 info

## Changes

- **2026-10-31** `a3f4100e14c9`: 2 breaking, 11 info
  - the `data/dashboardUrl` response's property format changed from `uri` to no format for status `202`
  - the `data/updatedAt` response's property format changed from `date-time` to no format for status `202`
  - added the new optional request property `attachmentIds`
  - added `subschema #1, subschema #2` to the request body `anyOf` list
  - the `message` request property's minLength was decreased from `1` to `0`
  - added the optional property `data/messages/items/activities` to the response with the `202` status
  - added the optional property `data/messages/items/attachments` to the response with the `202` status
  - added the optional property `data/messages/items/author` to the response with the `202` status
  - added the optional property `data/messages/items/clientMessageId` to the response with the `202` status
  - added the optional property `data/messages/items/research` to the response with the `202` status
  - added the required property `data/owner` to the response with the `202` status
  - added the required property `data/viewerIsOwner` to the response with the `202` status
  - added the required property `data/visibility` to the response with the `202` status
- **2026-10-23** `e3427b73824e`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/inth/apis/inth-api/docs/v1/agent-chats/:chatId/messages/post.md) - [API](https://skmtc.dev/inth/apis/inth-api.md) - [Page](https://skmtc.dev/inth/apis/inth-api/changes/v1/agent-chats/:chatId/messages/post)