Agent Skills (Addy Osmani)
Engineering skills that follow a real dev lifecycle.
New to this? What open source means and how to read this page.
What it is
Production-style engineering skills for coding agents, with nine slash commands that map to define, plan, build, verify, review and ship.
Good for
Giving an agent a consistent engineering process instead of ad hoc prompts.
The catch
It is opinionated about how software should be built, so it may not match your workflow. Try a few commands before you adopt the whole set.
Facts checked on 12 October 2026. We have not yet run a hands-on test of this tool. When we do, it gets a "Tested" mark here. Approximate US list prices for an individual plan, from third-party price trackers checked on 12 Oct 2026. Monthly billing where it exists. Regions, taxes and promotions change them. Confirm at the vendor before you decide.
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