No plugin, OAuth, API key, or user login is required to create a hunt.
ChatGPT cannot POST from a normal chat. After you have hunt JSON, URL-encode it and fetch:
https://scavenge.rs/api/ai/hunts/create?payload=<url-encoded JSON>
The response page contains playUrl and a private
claimUrl. Give playUrl to players. Give claimUrl only to the
person who asked you to create the hunt. Players need a free Scavenge account.
POST
https://scavenge.rs/api/ai/hunts
with Content-Type: application/json.
Schema, clue types, and safety rules: https://scavenge.rs/.well-known/scavenge-ai-hunt.json
playUrl to play.claimUrl only to the requester.