AnthropicThe first-party skill for making skills. It covers writing one from scratch, improving an existing one, running evals against it and tuning the description so the agent actually loads it at the right moment.
In the author’s words
Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.
The description field from SKILL.md, quoted as written.
Read it before you install it
SKILL.md · 480 lines
Install on its own
Or add it to your stack above and install everything at once.
npx skills add https://github.com/anthropics/skills --skill skill-creatorTrust audit
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- Resolves · 176,702 stars, passed
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- Transcribed from the author's own page, passed
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- Last updated 5 months ago, passed
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- Credited to Anthropic, passed
Goes well with
pick-ui-library
Picks the library from the set Emil actually uses and trusts.
Stops your agent hand-rolling a toast or installing whatever is trending. Covers components, motion, charts, interaction, state and styling.
npx skills add https://github.com/emilkowalski/skills --skill pick-ui-library
better-ui
Concentric radius, optical alignment, surface depth, hit areas.
Based on the Details That Make Interfaces Feel Better article. The small corrections that separate a shipped interface from a generated one.
npx skills add https://github.com/jakubkrehel/skills --skill better-ui
ordinary-interfaces
180 interface rules that each carry a number and its evidence grade.
Every rule states a value, cites whether that value is spec, measured or convention, and says where it stops applying. Reads your project's own tokens before it quotes a default, so a 7px radius in a 7px system is correct rather than a finding.
npx skills add https://github.com/Board-ly/ordinary-interfaces
Emil Kowalski
Jakub Krehel
Finn Marten