Where can one find the documentation for the LEGO Mindstorms Robot Inventor software?

Question

Is the documentation (either official or unofficial) of the programming "language" for the LEGO Mindstorms Robot Inventor software available somewhere? Preferably online, without requiring the download of an application. (I have looked at the official LEGO site for the Mindstorms product line, but found nothing there)

To elaborate, I'm looking for a resource detailing the available commands, their possible parameters, expected results, etc.

Answer 1

Official Docs

Word Blocks

The Word Block Descriptions for the block language (Scratch) are under Help & Support in the Settings.

Settings are found by clicking on the gear icon on the home page.

Basic Python

For Python, there is a Knowledge Base on the side of the screen. Click the book icon to show or hide it.

Advanced Python

There is also separate documentation for the low-level Python APIs for advanced users.

Unofficial Docs

• Prime Lessons has documentation for both SPIKE Prime and MINDSTORMS Robot Inventor.
• Laid Back Koala made PDFs for both word blocks and basic Python and shared them on the Eurobricks forum

Answer 2

Recently following web-page appeared: https://lego.github.io/MINDSTORMS-Robot-Inventor-hub-API/

I learned it from David Lechner (https://github.com/gpdaniels/spike-prime/issues/7#issuecomment-850643719). I haven't seen an official announcement, but the URL implies it's from LEGO.