---
title: "Changes to Send Message"
method: POST
path: "/api/{account}/chats/{chat_id}/messages"
---

# Changes to Send Message

`POST /api/{account}/chats/{chat_id}/messages`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 2 of 11 revisions.

- **2026-10-17** `b3968f1bc1f0`: 4 info
- **2026-05-24** `93a6dfdeeb67`: 3 breaking, 9 info

## Changes

- **2026-10-17** `b3968f1bc1f0`: 4 info
  - added the new optional `header` request parameter `Idempotency-Key`
  - added the new optional request property `blockBannedWords`
  - the `price` request property type was generalized from `integer` to `number`
  - added the non-success response with the status `409`
- **2026-05-24** `93a6dfdeeb67`: 3 breaking, 9 info
  - the `mediaFiles/items/` request property type changed from `string` to `file[]|string`
  - the `previews/items/` request property type changed from `string` to `file[]|string[]|int`
  - the response property `data/giphyId` became nullable for the status `200`
  - api tag `Chat Messages` added
  - api tag `Chats` removed
  - added the new optional request property `giphyId`
  - added the new optional request property `replyToMessageId`
  - added the new optional request property `rfGuest`
  - added the new optional request property `rfPartner`
  - added the new optional request property `rfTag`
  - request body became optional
  - the request property `text` became optional

---

[Operation](https://skmtc.dev/onlyfansapi/apis/onlyfans-api/docs/api/:account/chats/:chat_id/messages/post.md) - [API](https://skmtc.dev/onlyfansapi/apis/onlyfans-api.md) - [Page](https://skmtc.dev/onlyfansapi/apis/onlyfans-api/changes/api/:account/chats/:chat_id/messages/post)