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create-skill · neolabhq — Claude Code skill: what it does, how to install

Helps create or update skills with TDD, using subagent scenarios to test an instruction before it is revised.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓ 
npx skills add NeoLabHQ/context-engineering-kit --skill create-skill -a claude-code
Open on GitHub

What create-skill does

create-skill applies the RED-GREEN-REFACTOR cycle from TDD to skill documentation. A subagent first runs a pressure scenario without the instruction; the author then records the failure and adds targeted guidance.

It covers the structure of SKILL.md, including YAML name and description metadata plus Markdown instructions. Scripts, references, and assets can live in separate bundled files when the skill needs them.

You need to understand TDD before using it. That is a reason to learn the RED-GREEN-REFACTOR cycle first, because the checking method relies on it.

What it helps with

  • create a SKILL.md for a new skill
  • test subagent behaviour without instructions
  • record rule violations from pressure scenarios
  • revise guidance after finding loopholes

Example prompts for the agent

  • Create a new skill for an API workflow and test it with subagent scenarios.
  • Update the existing SKILL.md to address the violations found in testing.
  • Check a new skill before deployment and revise the instruction from the results.

How to install create-skill

1Skills CLI (Vercel)

npx skills add NeoLabHQ/context-engineering-kit --skill create-skill -a claude-code

2Manually: put the files in place

~/.claude/skills/create-skill/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/create-skill/

Step by step, with commands for each platform: How to install skills in Claude Code: five ways

Questions about create-skill

How do I install create-skill in Claude Code?

Run npx skills add NeoLabHQ/context-engineering-kit --skill create-skill -a claude-code, then repeat npx skills add NeoLabHQ/context-engineering-kit --skill create-skill -a claude-code. The skill file is at ~/.claude/skills/create-skill/SKILL.md.

What does create-skill do?

It guides the creation and revision of skill instructions by applying TDD to documentation. It uses subagent checks before and after changes to SKILL.md.

What do I need before using create-skill?

You need to understand Test-Driven Development and the RED-GREEN-REFACTOR cycle. The skill adapts that process for testing documentation.

Similar skills

All skills for Agent setup: memory, context, orchestration →

create-skill by other authors comes first.

create-skill siviter-xyz A skill that walks the agent through building other skills: SKILL.md layout, the 200-line rule, and moving detail into references. CX Codex +1 2,800installs validate-skills Callstack Checks skills in skills/ against the agentskills.io specification and Claude Code practices. Use it when authoring or reviewing a skill collection. CX Codex +1 7,300installs open-knowledge-write-skill Inkeep A skill that walks the agent through authoring a new SKILL.md: picking scope, writing frontmatter, and checking that it triggers when it should. CX Codex +1 6,900installs skill-authoring grafana Walks you through writing and reviewing SKILL.md files against the four-dimension rubric the grafana/skills CI gate enforces. Useful when a skill won't trigger or keeps failing review. CX Codex +1 3,800installs writing-plans Jesse Vincent This skill turns requirements for a multi-step task into an implementation plan before code changes begin. It helps when another engineer needs exact files, interfaces, and checks. CX Codex 282,859installs skill-creator openclaw A skill for writing, repairing and reviewing other skills. It splits behaviour into branches, sets the frontmatter and sorts resources into folders. Useful once your skill folder gets crowded. CX Codex +1 6,700installs momentic-spec momentic-ai A skill that makes the agent write Momentic tests before implementing anything, so the tests define the contract instead of matching finished code. CX Codex +1 28,300installs

From the same set55

create-agent Scaffolds autonomous subagents for Claude Code with valid YAML frontmatter, isolated contexts, and triggering examples. CX Codex +1 1,200installs do-competitively Runs three agents on the same task in parallel, scores their output with judges, then synthesizes the best result. Built for work where quality beats speed. CX Codex +1 1,200installs plan-do-check-act Walks your agent through four PDCA phases: plan, do, check, act. Useful when you want to improve a process instead of guessing at it. CX Codex +1 1,200installs commit Automates Git commits using conventional commit messages and matching emojis. It checks the active branch, runs pre-commit linters, and suggests splitting complex diffs into atomic commits. CX Codex +1 1,200installs create-ideas This skill makes the model return six candidate answers with probabilities: three likely ones and three pulled from the tails of the distribution. CX Codex +1 1,200installs cause-and-effect Runs structured Ishikawa diagram investigations on development bottlenecks. Pinpoints root causes across technical and team factors. CX Codex +1 1,200installs fix-tests This skill tracks down failing tests after logic changes or refactoring and guides fixes until the suite passes. CX Codex +1 1,200installs test-skill Tests agent skills before deployment using a TDD cycle with pressure scenarios. Reveals when an assistant bypasses rules and invents excuses. CX Codex +1 1,200installs

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