verifier.org

skill-creator

authoring skills with an actual eval loop

free — Apache-2.0#anyone-writing-skills-wh

the eval loop is what makes this worth installing — most skill authoring is done on vibes, and this measures instead.

creates, edits and optimises skills, and critically runs evals to measure whether a skill actually improves performance. roughly 368,000 installs.

that measurement step is genuinely rare. the normal workflow for writing a skill is to write it, try it once, decide it feels better and ship it. being able to test properly is the difference between engineering and superstition.

the description above is ours, condensed from the ranking. pricing moves — check it on the vendor's own page before you rely on it.

pricing
free — Apache-2.0
website
github.com
our verdict

the eval loop is what makes this worth installing — most skill authoring is done on vibes, and this measures instead.

we researched this category against vendors' own pricing pages and licence files. that is where this line comes from — not from the vendor, and not from anything they paid for.

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ccusage

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#usage#cost

frontend-design

we checked thisfree — Apache-2.0

the single most-installed plugin there is

#anyone-generating-ui-who