---
title: "Changes to Preview a join code without using it"
method: POST
path: "/api/v2/join/preview"
---

# Changes to Preview a join code without using it

`POST /api/v2/join/preview`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 2 of 4 revisions.

- **2026-10-20** `78df39c4c62e`: 4 warning
- **2026-10-20** `4dd5b1cd0687`: 8 warning, 4 info

## Changes

- **2026-10-20** `78df39c4c62e`: 4 warning
  - added the new `known_of_not_writable` enum value to the `error/code` response property for the response status `404`
  - added the new `known_of_not_writable` enum value to the `error/code` response property for the response status `422`
  - added the new `known_of_not_writable` enum value to the `error/code` response property for the response status `429`
  - added the new `known_of_not_writable` enum value to the `error/code` response property for the response status `503`
- **2026-10-20** `4dd5b1cd0687`: 8 warning, 4 info
  - added the new `character_taken` enum value to the `error/code` response property for the response status `404`
  - added the new `character_taken` enum value to the `error/code` response property for the response status `422`
  - added the new `character_taken` enum value to the `error/code` response property for the response status `429`
  - added the new `character_taken` enum value to the `error/code` response property for the response status `503`
  - added the new `world_full` enum value to the `error/code` response property for the response status `404`
  - added the new `world_full` enum value to the `error/code` response property for the response status `422`
  - added the new `world_full` enum value to the `error/code` response property for the response status `429`
  - added the new `world_full` enum value to the `error/code` response property for the response status `503`
  - added the optional property `characters` to the response with the `200` status
  - added the optional property `max_uses` to the response with the `200` status
  - added the optional property `name_required` to the response with the `200` status
  - added the optional property `uses_left` to the response with the `200` status

---

[Operation](https://skmtc.dev/onlyworlds/apis/onlyworlds-api/docs/api/v2/join/preview/post.md) · [API](https://skmtc.dev/onlyworlds/apis/onlyworlds-api.md) · [Page](https://skmtc.dev/onlyworlds/apis/onlyworlds-api/changes/api/v2/join/preview/post)