I am not sure if this will be of any use to anyone, but I couldn't find anything like it anywhere and I needed it for a hobby project I am working on so I thought someone else might find it useful.
I scraped the Hubitat device capabilities page and generated a JSON metadata file for the capabilities. You can find it here.
Great addition!
I was looking for something like this, how did you generate this? (find the commands, attributes..)
You may also find that GetAttributeApp gives you a little more specific info.
The list above is by Capability but real device drivers often combine capabilities and that's what GetAttributeApp helps with.
You pick devices and it creates a "Report" that looks like:
I scraped Driver Capability List - Hubitat Documentation with a C# console app. 
Yeah, the above linked JSON is just metadata for capabilities, not any kind of live interrogation of a device. You might use it if you were building some kind of web-driven groovy code generator for devices (which is not what I am working on but would be cool). The Maker API provides the real-time device interrogation fairly well, although I'm trying to request to get the schema that it exposes cleaned up a bit in a different thread.
With the new Hubitat documentation, hoping there is a Hubitat Capabilities JSON that was developed and could be shared. It looks like there are updates located here . Tagging @mike.maxwell to understand what is possible.
There isnt a capability JSON, several capability attributes format their data in JSON and some drivers and integrations use JSON when communicating with native devices.
Download the Hubitat app
