SkillsMP-style directories make AI skills browsable. For web teams, value appears only when skills encode constraints—not when they merely lengthen prompts.
Skill vs one-off prompt
A real skill states scenario, I/O contracts, deny-lists, and acceptance criteria. Without constraints it is just a longer prompt.
Four selection criteria
Scenario match, clear constraints, inspectable output, and maintenance signals beat “free” as the only filter.
Three steps into the team library
Pilot → write failures into the deny-list → version and share. That is how free skills become durable assets.
