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Builds a new Claude Code skill from scratch through a relentless, evidence-based interview that walks the skill's design tree decision-by-decision — entity fit, use cases, name, description, workflow steps, tools, and progressive-disclosure layout — then reviews the finished skill against the plugin-building guidance and applies every fix it finds.
2 of 24 test cases passed with the skill.
Tokens, turns and time describe resource use, not a dollar price.
Lift withheld: 5 comparable cases; this report requires 8.
A test case the skill fixed. Same model, same prompt, with and without the skill.
I have gathered initial ideas for a pull request summarizer skill and have questions about frontmatter name, tool permissions, workflow steps, and test cases. Should I combine these four questions into one single message to the user?
| Checked | Without skill | With skill |
|---|---|---|
| Asks only one question at a time instead of batching multiple decisions. | Missed | Passed |
The instructions your model reads when the skill loads.
bash "${CLAUDE_PLUGIN_ROOT}/scripts/han-config-dir.sh" 2>/dev/null || echo "$HOME/.claude"cat .han/config.md 2>/dev/null || echo ""As your first action, use the Read tool on .han/config.md inside the personal config directory path above. A read
that returns no file is no personal configuration: continue silently. When that file or the project .han/config.md
probe supplies content, apply it per config-rule.md, which governs precedence
between the two files, relative-path resolution, and what to do with a file that reads but cannot be used.
The authoritative skill-authoring guidance ships in this plugin. Read the specific document a decision needs, when that decision is on the table — never read them all up front, because that defeats progressive disclosure and burns context on guidance the current skill does not touch.
${CLAUDE_PLUGIN_ROOT}/skills/guidance/references/${CLAUDE_PLUGIN_ROOT}/skills/guidance/references/skill-building-guidance/Map from decision to governing document (read just-in-time):
| Decision on the table | Read |
|---|---|
| Skill vs. agent vs. hook | plugin-entity-taxonomy.md |
| Use cases, trigger phrases, test cases | skill-building-guidance/use-case-planning.md |
| Directory name, file name, dependency prefix | skill-building-guidance/naming-conventions.md |
The description field (four components, boundaries) | skill-building-guidance/skill-description-frontmatter.md, skill-building-guidance/skill-description-length.md |
| Which frontmatter fields to set | skill-building-guidance/skill-frontmatter-fields.md |
| Where content lives (body vs. references vs. scripts vs. assets) | skill-building-guidance/progressive-disclosure.md, skill-building-guidance/skill-reference-files.md |
| Step structure and workflow shape | skill-building-guidance/workflow-patterns.md, skill-building-guidance/writing-effective-instructions.md |
allowed-tools, Bash permission granularity | skill-building-guidance/allowed-tools-bash-permissions.md, skill-building-guidance/allowed-tools-AskUserQuestion.md |
| Reading config / runtime data | skill-building-guidance/context-injection-commands.md, skill-building-guidance/dynamic-project-discovery.md |
| Running scripts | skill-building-guidance/script-execution-instructions.md |
| Dispatching agents from the skill | skill-building-guidance/agent-dispatch-namespacing.md, plus agent-building-guidelines/multi-agent-economics.md |
| Degraded environments (no git, missing tools) | skill-building-guidance/graceful-degradation.md, skill-building-guidance/optional-git-repositories.md |
| Frontmatter safety (angle brackets, YAML types) | skill-building-guidance/security-restrictions.md |
| Hardening fuzzy steps into deterministic ones | skill-building-guidance/hardening-fuzzy-vs-deterministic.md |
| Splitting or composing skills | skill-building-guidance/skill-decomposition.md, skill-building-guidance/skill-composition.md |
| Defining success and tests | skill-building-guidance/success-criteria-and-testing.md |
| New plugin needed (plugin.json, marketplace.json) | claude-marketplace-and-plugin-configuration/ and templates/ |
test cases passed with the skill
Published skills whose descriptions closely match this one, with their headline benchmark lift.
More skills from the same source and nearby in the registry, with their headline benchmark lift.