Discourse now supports composing a new (pre-filled) topic via URL! To compose a new pre-filled topic, modify URL params like this:
http://discourse.example.com/new-topic?title=topic%20title&body=topic%20body&category=category/subcategory&tags=email,planned
This will open composer window pre filled with topic title, body, category and tags.
Try it out live, here on meta!
Also, instead of providing category/subcategory name, you can also specify a numeric category_id
, like:
This feature also supports “Start a topic by pasting a link (like Reddit)”, provided that the body is not present, for example:
https://meta.discourse.org/new-topic?title=https://www.xkcd.com/556
Want to compose a pre-filled personal message instead? See: Compose a new pre-filled personal message via URL