IME, a lot of good information on how to achieve things with the #OpenHAB Rules DSL requires good searching on the OpenHAB forums or mining through the Javadoc.

I thought I'd use Claude over the weekend/last night to help generify some stuff in my config, and it suggested a cool approach whereby I could put metadata against items and then use that metadata in my rules to customise behaviour.

It's also described here: https://forum.aqara.com/t/exploring-openhabs-rule-design-with-metadata-for-enhanced-flexibility/20956

Unfortunately, Claude seems to have just completely made up how to _read_ the metadata (validated against the Javadoc). It then proposed an alternative approach, which again seemed reasonable - but completely made up (again, validated against the Javadoc).

Trying a third time got it to say:

> Let me check what's actually available in OpenHAB for accessing metadata from rules

...and then:

> Unfortunately, accessing item metadata from Rules DSL is quite limited in OpenHAB. The documentation confirms that "Metadata can be added and removed, but not read" from Rules DSL

I know none of this is news; but... yeesh.