What problem does it solve? Writing a skill that triggers reliably and produces good outputs is hard to do by intuition alone. This Skill provides a structured workflow for drafting new skills, running test prompts with and without the skill, grading results against assertions, and iterating based on quantitative benchmarks and user feedback. ## 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. - Eval and Benchmark Loop: Spawns parallel with-skill and baseline runs, drafts assertions, grades outputs, and aggregates pass rates, timing, and token usage into benchmark.json with mean and standard deviation. - Description Optimization: Generates realistic should-trigger and should-not-trigger queries, reviews them in an HTML tool, and runs an automated train/test optimization loop to improve triggering accuracy. - Use Case: You want a skill that formats weekly sales spreadsheets. This Skill helps you draft it, runs three realistic test prompts with and without the skill, shows results in a browser-based review viewer, and rewrites the skill based on your feedback until the outputs pass. ## Quick Start Ask Claude to create a new skill for your workflow, for example: help me create a skill that converts meeting notes into structured action items.