I have been using a similar tool, Clipea, on a regular basis and I find it really helpful. I am CLI proficient enough to know whats possible on the shell, but I use it too infrequently to remember all the ins and outs and flags. At this point these tools really improve productivity.

Have not used shllm, but from the docs it looks good. Clipea and others have not been updated for quite some time, except llm from Simon Willison, the datasette developer. His llm implementation has a llm-cmd plugin which provides what shllm does. Works like a charm.

Over all a very useful category of AI programs.