Every skill is evaluated against real work using a blind-test methodology. Each gets a maturity rating so you know exactly what you're installing — not a demo, a benchmark.
The plugin delivers finished work product on complex tasks and handles edge cases. A user with deep domain expertise would assess this output as expert-level. This is the standard where you'd be comfortable putting the output in front of a stakeholder with only light review.
Produces well-structured output that is approximately 90% complete. A user with deep domain expertise would assess this as solid work, still needing refinement. The remaining gaps require expert-level input and judgment.
The plugin produces substantive output. However, the tasks are relatively simple, or work is a midpoint rather than a near-final draft. The level of specificity and expert-level input is lacking. The plugin needs customization and iteration before it is consistently useful.