What problem does it solve? Writing an effective skill is hard to get right on the first try — descriptions may fail to trigger, instructions may be ambiguous, and there is no built-in way to measure whether a skill actually improves outcomes. This Skill provides a structured create-test-review-iterate workflow with quantitative benchmarking so skills are validated against real test prompts rather than guesswork. ## Core Features & Use Cases - Guided Skill Authoring: Interviews the user to capture intent, then drafts a SKILL.md with proper frontmatter, progressive disclosure structure, and writing-style guidance. - Evaluation & Benchmarking: Runs test prompts with and without the skill in parallel subagents, grades assertions, and aggregates pass rates, timing, and token usage into benchmark reports with an interactive HTML review viewer. - Description Optimization: Generates trigger/no-trigger eval queries, runs an automated optimization loop with train/test splits, and applies the best-performing description to improve triggering accuracy. - Use Case: You want a skill that formats weekly sales spreadsheets. This Skill helps you draft it, creates realistic test prompts, runs them with and without the skill, shows you side-by-side results in a browser viewer, and iterates until the outputs meet your bar. ## Quick Start Ask the assistant to help you create a new skill for your workflow, or to evaluate and improve an existing skill by running test cases and benchmarks.
