Agent skill

Health

by ninehills in ninehills/skills

Runs a budget-aware agent-assisted engineering health audit for instruction/config drift, hooks/MCP, verifier surfaces, and AI maintainability.

No licenceAuto-check: warningsAgent Workflows

Install Health

The automated check flagged lines worth reading first. See the safety section below.

skills CLI
$ npx skills add ninehills/skills --skill health -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install ninehills/skills health --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/ninehills/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/health .claude/skills/health && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
health
GitHub stars
280
Token cost
~5.4k tokens
SKILL.md length
2,735 words
Files
13 (incl. scripts)
Skills in repo
38
Repo updated
First seen
Licence
None found

At a glance

Runs a budget-aware agent-assisted engineering health audit for instruction/config drift, hooks/MCP, verifier surfaces, and AI maintainability.

  • Works in 4 steps: Assess project tier → Collect data → Analyze → …
  • Users ask in any language to audit Claude
  • SKILL.md covers Outcome Contract, Durable Context Preflight, Step 0: Assess project tier and Step 1: Collect data, plus 6 more sections
  • Runs Shell and Python scripts from its folder; calls bash, git and npx

What it does

Health is an agent skill from ninehills/skills. Runs a budget-aware agent-assisted engineering health audit for instruction/config drift, hooks/MCP, verifier surfaces, and AI maintainability. Use when users ask in any language to audit Claude, Codex, Pi, agent instructions, MCP or hooks, verifier coverage, or AI-maintainability drift. Not for debugging application code or reviewing PRs.

Its SKILL.md is about 5.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 14 other files, including scripts (for example `agents/inspector-context.md`, `agents/inspector-control.md` and `agents/inspector-maintainability.md`).

It sits in Agent Workflows, covering Agent instruction files. It works with Model Context Protocol.

When your agent uses it

  • Users ask in any language to audit Claude
  • Agent instructions
  • Verifier coverage
  • AI-maintainability drift

Example prompts

  • “/health”

Requirements

  • Python 3
  • Node.js
  • A Bash shell

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. Assess project tier
  2. Collect data
  3. Analyze
  4. Report

What it can do on your machine

Read from SKILL.md and the folder at commit f3e82a7. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 9 files in scripts/ (Shell and Python), which the agent can run.

    Shell commands in SKILL.md call:

    • bash
    • git
    • npx
    • curl
    • wget
    • sh
    • go
    • npm

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use git, npx, curl, wget and npm, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Health loads about 5.4k tokens when it runs. Until then it costs about 87 tokens; SKILL.md has 2,735 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~87
When it runs · the whole SKILL.md, loaded when a task matches
~5.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check: warnings

The automated check found patterns that need a careful read before installing.

  • WarningPipes a downloaded script straight into a shellSKILL.md:97
    `secrets*`), pipe-to-shell installers (`curl ... | bash`, `wget ... | sh`), and outbound shells (`ssh`, `scp`, `nc`). Re
  • NoteMentions a .env fileSKILL.md:97
    providers, GPG, gh CLI), secret files (`.env`, `credentials*`, `secrets*`), pipe-to-shell installers (`curl ... | bash`

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 2,735 words (~5,445 tokens).

“Prefix your first line with 🥷 inline, not as its own paragraph.”

— opening of SKILL.md by ninehills
name
health
when_to_use
检查claude, 检查codex, 检查pi, Codex 配置, Pi 配置, AGENTS.md, config.toml, agent instructions, 健康度, 配置检查, 配置对不对, AI coding 腐化, 代码变烂, 维护性, 上下文混乱, 验证缺失, 验证命令失真, Claude…
dispatch_intent
Codex/Claude/Pi ignoring instructions, agent config audit, hooks/MCP broken, health token usage, AI coding code rot, hotspot ownership, unclear context…

Read the full SKILL.md on GitHub

Files

SKILL.md and 12 other files (scripts) in health of ninehills/skills.

  • SKILL.md
  • agents/inspector-context.md
  • agents/inspector-control.md
  • agents/inspector-maintainability.md
  • scripts/check-agent-context.sh
  • scripts/check-doc-refs.sh
  • scripts/check-maintainability.sh
  • scripts/check-verifier-output.sh
  • scripts/check_agent_context.py
  • scripts/check_doc_refs.py
  • scripts/check_maintainability.py
  • scripts/check_verifier_output.py
  • scripts/collect-data.sh

Open the folder on GitHubat commit f3e82a7

Compare with similar skills

Health next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Health compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Health this skillninehills/skills280—~5.4kAutomated safety check: WarnNone
Agent Setup Health Audittw93/Waza7.2k—~5.2kAutomated safety check: NotesMIT
Agnixagent-sh/agnix445—~874Automated safety check: PassApache-2.0
Agnixagent-sh/agnix445—~563Automated safety check: PassApache-2.0
Bringupjenissimo/bottleship152—~2.9kAutomated safety check: PassApache-2.0
Drydock Repo Harness SetupYeachan-Heo/oh-my-claudecode40k—~5.2kAutomated safety check: PassMIT

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Questions about Health

What does Health do?

Runs a budget-aware agent-assisted engineering health audit for instruction/config drift, hooks/MCP, verifier surfaces, and AI maintainability. Health is an agent skill from ninehills/skills. Runs a budget-aware agent-assisted engineering health audit for instruction/config drift, hooks/MCP, verifier surfaces, and AI maintainability.

When should I use Health?

Health fits situations like: users ask in any language to audit Claude; agent instructions; verifier coverage; AI-maintainability drift.

How do I install Health in Claude Code?

Run `npx skills add ninehills/skills --skill health -a claude-code`. Or copy the skill folder (health in ninehills/skills) into .claude/skills/health in your project. Claude Code loads it when a task matches its description.

How do I install Health in Codex?

Run `npx skills add ninehills/skills --skill health -a codex`. Or copy the skill folder (health in ninehills/skills) into .agents/skills/health in your project. Codex loads it when a task matches its description.

Can I use Health in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ninehills/skills --skill health -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/health, .gemini/skills/health, .github/skills/health and .opencode/skills/health in your project.

What does Health need to run?

Going by SKILL.md and its folder, Health needs a shell and Python for the scripts in its folder and the command-line tools its instructions call (bash, git, npx, curl, wget and sh). Our summary lists: Python 3; Node.js; A Bash shell.

Does Health access the network?

SKILL.md contains no URLs. Its commands use git, npx, curl, wget and npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Health safe to install?

Our automated static check of SKILL.md flagged 1 warning(s): pipes a downloaded script straight into a shell. Read the flagged lines before installing; the check is not a guarantee either way. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Health use?

No licence was found for Health or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Health use?

About 5.4k tokens (SKILL.md is roughly 22k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Health?

Skills that share tags, products or a category with Health: Agent Setup Health Audit (tw93/Waza, 7.2k stars), Agnix (agent-sh/agnix, 445 stars), Agnix (agent-sh/agnix, 445 stars) and Bringup (jenissimo/bottleship, 152 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Health?

ninehills (a GitHub user) maintains it in ninehills/skills, which has 280 GitHub stars. The repository holds 38 skills in this directory. The repository was last updated on June 22, 2026.

Source: ninehills/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.