Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations.
Analyzes codebase patterns to discover missing skills and generate/update SKILL.md files in .claude/skills/ with real, repo-derived examples.
Master skill for the CLAUDE.md lifecycle: create, update, and improve files using repo-verified data, with multi-module support and stack-specific rules.
Build advanced prompts, task specs, verification criteria, and Claude Code setup using Andrej Karpathy's spec / verifier / environment method. Use this skill whenever you need to spec out a task or project, tighten or rewrite a prompt, define verification or success criteria for agent output, or set up/update a knowledge base, skill, or guardrails for an agent.
This skill allows you to interact with Trello account to list boards, view lists, and create cards automatically.
