cheat.sh/doc/developer.md

Developer Keys

If you have a developer key, you can provide it in your queries to get access to experimental cheat.sh features. The developer key must be specified as the X-Cheatsh-Key header of the query.

To check, if you key is valid, query /:authorized:

$ curl -H "X-Cheatsh-Key: 2ecf6cba-a8b2-04a7-7a51-XXXX" http://127.0.0.1:8002/:authorized
AUTHORIZED (developer)

$ curl -H "X-Cheatsh-Key: 2ecf6cba-a8b2-04a7-7a51-YYYY" http://127.0.0.1:8002/:authorized
NOT AUTHORIZED

If you use editor plugins to access cheat.sh, see the plugin documentation for information about key usage.