skill-creator

Create, evaluate, and iteratively improve Claude skills with benchmarked test runs.

Updated May 20, 2026
One-click install
npx skills add https://github.com/TechCorp25/kingdom --skill skill-creator-techcorp25
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: skill-creator
Source: https://github.com/TechCorp25/kingdom/tree/main/.claude/skills/skill-creator
Command: npx skills add https://github.com/TechCorp25/kingdom --skill skill-creator-techcorp25

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and assets (resource) components.

What problem does it solve? Writing an effective skill is hard to get right on the first try, and there is no built-in way to know whether a skill actually improves Claude's output or triggers when it should. This Skill provides a structured draft-test-review-improve loop with quantitative benchmarking so skill authors can iterate based on evidence instead of guesswork. ## Core Features & Use Cases - Guided Skill Authoring: Interviews the user about intent, trigger contexts, and output formats, then drafts a SKILL.md following progressive disclosure and writing-style best practices. - Evaluation Harness: Runs test prompts with and without the skill in parallel subagents, grades outputs against assertions, and aggregates pass rates, timing, and token usage into benchmark reports. - Description Optimization: Generates realistic trigger/no-trigger eval queries and runs an automated optimization loop to improve the skill description's triggering accuracy, with train/test splits to avoid overfitting. - Use Case: A user wants a skill that formats weekly sales spreadsheets. This Skill helps draft it, runs three realistic test prompts with baseline comparisons, presents results in an HTML review viewer, and iterates until the outputs satisfy the user. ## Quick Start Help me create a new skill that converts meeting notes into structured action items, then test it with a few realistic prompts.

Frequently Asked Questions about skill-creator

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create a new Claude skill from scratch?▼

Start by defining what the skill should do, when it should trigger, and its expected output format. Then write a SKILL.md with name and description frontmatter, draft 2-3 realistic test prompts, and iterate based on evaluation results.

How do I test whether my skill actually improves Claude's output?▼

Run each test prompt twice in parallel: once with the skill and once without as a baseline. Grade both outputs against objective assertions, then compare pass rates, timing, and token usage in the aggregated benchmark report.

How can I improve a skill description so it triggers more reliably?▼

Generate 20 realistic eval queries split between should-trigger and should-not-trigger cases, then run the automated optimization loop. It tests description variants against train and held-out queries and selects the best performer by test score.

What is the difference between with_skill and without_skill benchmark runs?▼

With_skill runs execute the test prompt with the skill loaded, while without_skill baselines run the identical prompt without it. Comparing the two configurations isolates the skill's actual contribution to output quality.

When should a skill not include quantitative test assertions?▼

Skills with subjective outputs like writing style or design quality should rely on qualitative human review instead of assertions. Assertions work best for objectively verifiable outputs such as file transforms, data extraction, or fixed workflow steps.