# target_usernames on POST /posts.json is deprecated

Discourse API deprecated POST /posts.json, body parameter target_usernames without giving a shutdown date yet.

The body parameter target_usernames on the POST /posts.json endpoint has been deprecated without a shutdown date. Calls continuing to rely on this parameter will eventually fail once it is removed. The provider notes that it is deprecated in favor of an alternate recipient field.

## What to use instead

Send the comma-separated recipients in target_recipients instead.

- API: Discourse API (*.discourse.group)
- Kind: Endpoint removal
- Takes effect: no date given yet
- Calls after that day: fail
- Calls it hits: `POST /posts.json`, `body parameter target_usernames`
- Source: [Announcement](https://raw.githubusercontent.com/discourse/discourse_api_docs/main/openapi.json)
- Verified: October 26, 2026, against Discourse API's own pages
- Page: https://www.okapi.bot/providers/discourse-api/breaking-changes/target-usernames-on-post-posts-json-is-deprecated/

## Discourse API's words

> Deprecated. Use target_recipients instead.

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent