Harness-Starter: Skill for Claude Code

.claude/skills/harness-gc/SKILL.md

harness-gc is a skill for Claude Code from chenklein26-maker/Harness-Starter. It costs 35 tokens per session (644 once invoked), scanned A, original, MIT.

A scheduled project-health scanner that checks whether code, documentation, configuration, and agent setup still agree. It reports issues such as unregistered hooks, leftover debugging code, type errors, and invalid configuration files, then can propose fixes for review.

In plain words
What is it for?
Use it for a one-time or recurring repository health check, including Git status, CLAUDE.md completeness, TODO and FIXME density, .gitignore entries, hooks, TypeScript errors, LSP settings, and harness state.
Why use it?
It detects gradual project drift before it becomes harder to repair. The scan is separate from the agent that proposes changes, and a circuit breaker stops repeated attempts without improvement.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions CLAUDE.md.

This is chenklein26-maker/Harness-Starter's own configuration. It tells Claude Code how to work on Harness-Starter itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Harness-Starter configures →

Reuse

Borrowing it

Nothing to install: this file belongs to chenklein26-maker/Harness-Starter. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/chenklein26-maker/Harness-Starter/main/.claude/skills/harness-gc/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/chenklein26-maker/Harness-Starter

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for harness-gc

README.md
[![agentmods](https://agentmods.dev/badge/skills/chenklein26-maker/harness-starter/harness-gc/github.svg)](https://agentmods.dev/skills/chenklein26-maker/harness-starter/harness-gc)
Your own site
<a href="https://agentmods.dev/skills/chenklein26-maker/harness-starter/harness-gc"><img src="https://agentmods.dev/badge/skills/chenklein26-maker/harness-starter/harness-gc/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for harness-gc

Your own site · 80×15
<a href="https://agentmods.dev/skills/chenklein26-maker/harness-starter/harness-gc"><img src="https://agentmods.dev/badge/skills/chenklein26-maker/harness-starter/harness-gc.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 644 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00035 $0.00644
Opus 5 $0.00017 $0.00322
Sonnet 5 $0.00007 $0.00129
Haiku 4.5 $0.00003 $0.00064

Measured 9d ago against content hash fd7188ee6f13, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

harness-gc scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/harness-gc/SKILL.md · 53 lines

What it actually says

Harness GC (Garbage Collection) Agent

核心原则

  1. 外部验证门 — 扫描结果来自 gc-scan.mjs,非 Agent 自我报告(Sniff 模式)
  2. 执行与验证分离 — 写代码的 Agent 不给自己打分(Spotify 模式)
  3. Circuit Breaker — 连续 3 次无改善则停止,等你介入
  4. 认知不投降 — 所有修复最终由你 review → 确认

触发方式

方式 命令 说明
手动 node scripts/gc-scan.mjs 立即执行一次健康检查
Loop /loop 24h "node scripts/gc-scan.mjs" 每 24 小时自动扫描
Routine /schedule daily GC scan at 2am 持久化定时(需 Max)

扫描维度

# 维度 检查项 严重性
1 CLAUDE.md 完整性 必要章节 + 占位符 critical / warning
2 Git 状态 未提交变更数 + 调试残留 (console.log/debugger) info / warning
3 TODO/FIXME 密度 单文件 >5 处 info
4 .gitignore 健康 node_modules/reviews/loops 遗漏 info
5 Hook 注册 文件存在但未注册/被注释 critical / warning
6 Harness 状态 .harness-state 有效性 info / warning
7 TypeScript 类型 tsc --noEmit 错误(如存在 tsconfig.json) warning
8 LSP 配置 .lsp.json 有效性 info / warning

维度清单以此表为准。代码中 gc-scan.mjs 的 JSDoc 为权威来源。

工作流

TRIGGER → SCAN (gc-scan.mjs) → ANALYZE → PROPOSE (可选) → WAIT (你 review)

状态管理

  • .claude/loops/STATE.md — 当前活跃状态 (hot, 每次会话自动加载)
  • .claude/loops/LOG.md — 历史执行记录 (warm, 按需读取)
  • .claude/.harness-state — Phase/Mode 配置

Circuit Breaker

连续 3 次扫描无改善 → STOP 自动提案 → 标记 Phase: blocked → 等你人工介入。

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 53 lines · 35 tokens per session scan A fd7188ee6f13

Subscribe to this mod's changes

harness-gc is a skill published in the GitHub repository chenklein26-maker/Harness-Starter (119 stars, last pushed 2mo ago), licensed MIT. It adds 35 tokens to every session and 644 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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