---
title: "Changes to POST /api/channels/{channel_id}/threads/"
method: POST
path: "/api/channels/{channel_id}/threads/"
---

# Changes to POST /api/channels/{channel_id}/threads/

`POST /api/channels/{channel_id}/threads/`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 4 of 91 revisions.

- **2026-09-05** `ed2ca8c2aaca`: 4 breaking
- **2026-09-05** `656ca7f09c0c`: 4 breaking
- **2026-08-23** `124d689094de`: 1 breaking, 1 info
- **2026-08-02** `034b4e879932`: 1 info

## Changes

- **2026-09-05** `ed2ca8c2aaca`: 4 breaking
  - the `message/attachments/items/anyOf[#/components/schemas/MessageCreateAttachment]/duration_secs` request property type changed from `: number` to `number`, and format from `: float` to `float`
  - the `message/attachments/items/anyOf[#/components/schemas/MessageCreateAttachment]/waveform` request property type changed from `: string` to `string`, and format from `: byte` to `byte`
  - the `message/attachments/items/anyOf[#/components/schemas/MessageCreateCloudAttachment]/duration_secs` request property type changed from `: number` to `number`, and format from `: float` to `float`
  - the `message/attachments/items/anyOf[#/components/schemas/MessageCreateCloudAttachment]/waveform` request property type changed from `: string` to `string`, and format from `: byte` to `byte`
- **2026-09-05** `656ca7f09c0c`: 4 breaking
  - the `message/attachments/items/anyOf[#/components/schemas/MessageCreateAttachment]/duration_secs` request property type changed from `integer` to `: number`, and format from no format to `: float`
  - the `message/attachments/items/anyOf[#/components/schemas/MessageCreateAttachment]/waveform` request property type changed from `string` to `: string`, and format from no format to `: byte`
  - the `message/attachments/items/anyOf[#/components/schemas/MessageCreateCloudAttachment]/duration_secs` request property type changed from `integer` to `: number`, and format from no format to `: float`
  - the `message/attachments/items/anyOf[#/components/schemas/MessageCreateCloudAttachment]/waveform` request property type changed from `string` to `: string`, and format from no format to `: byte`
- **2026-08-23** `124d689094de`: 1 breaking, 1 info
  - removed `subschema #1, subschema #2` from the `message/attachments/items/` request property `anyOf` list
  - added `#/components/schemas/MessageCreateAttachment, #/components/schemas/MessageCreateCloudAttachment` to the `message/attachments/items/` request property `anyOf` list
- **2026-08-02** `034b4e879932`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/spacebarchat/apis/spacebar-server/docs/api/channels/:channel_id/threads/post.md) - [API](https://skmtc.dev/spacebarchat/apis/spacebar-server.md) - [Page](https://skmtc.dev/spacebarchat/apis/spacebar-server/changes/api/channels/:channel_id/threads/post)