skill-lint

skill-lint is a skill for Claude Code, Codex from cat-xierluo/legal-skills. It costs 115 tokens per session (5,573 once invoked), scanned A, original, no licence file.

A pre-release and review tool for coding-agent skills. It checks their instructions, structure, reliability, expected outputs, testing setup, evidence requirements, failure handling, business flow, and security risks.

In plain words
What is it for?
Checking a new or substantially changed skill before use, reviewing an existing skill, and inspecting its directory structure, test conditions, safety concerns, and agent-integration requirements.
Why use it?
It helps find unclear instructions, missing checks, mismatched tests, and other issues that can make a skill behave inconsistently.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Checking a new or substantially changed skill before use, reviewing an existing skill, and inspecting its directory structure, test conditions, safety concerns, and agent-integration requirements.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cat-xierluo/legal-skills/skill-lint
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add cat-xierluo/legal-skills --skill skill-lint
Clone the repo
git clone --depth 1 https://github.com/cat-xierluo/legal-skills

Made for: Claude Code, Codex.

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 skill-lint

README.md
[![agentmods](https://agentmods.dev/badge/skills/cat-xierluo/legal-skills/skill-lint/github.svg)](https://agentmods.dev/skills/cat-xierluo/legal-skills/skill-lint)
Your own site
<a href="https://agentmods.dev/skills/cat-xierluo/legal-skills/skill-lint"><img src="https://agentmods.dev/badge/skills/cat-xierluo/legal-skills/skill-lint/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 skill-lint

Your own site · 80×15
<a href="https://agentmods.dev/skills/cat-xierluo/legal-skills/skill-lint"><img src="https://agentmods.dev/badge/skills/cat-xierluo/legal-skills/skill-lint.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 115 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,573 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00115 $0.05573
Opus 5.5 $0.00046 $0.02229
Sonnet 5.5 $0.00023 $0.01115
Haiku 4.5 $0.00012 $0.00557

Measured 21d ago against content hash 5e7e5938a126, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

skill-lint scanned grade A with 1 finding 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 21d ago.

The scan reads SKILL.md. This mod also ships 8 executable files (scripts/harness_evidence_gate.py, scripts/harness_failure_audit.py, scripts/instruction_stability_gate.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

扫描器输出含文件、行号、能力信号、严重级、置信度与修正建议的结构化 JSON;存在 critical/high finding 时退出码 1(FAIL),未发现 SKILL.md 时退出码 2。覆盖:危险执行(subprocess/os.system/eval/exec/动态导入)、网络外传、环境变量/敏感文件访问、运行时自动安装、未固定依赖与已知 CVE、硬编码凭证、提示注入、污点流(env/argv/input → subproce
skills/skill-lint/SKILL.md · 287 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

33 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 21d ago Changed 5e7e5938a126
  2. 1mo ago Changed 5aa613310ba9
  3. 1mo ago Changed aa9389156e54
  4. 1mo ago Changed 0e36c3babcee
  5. 2mo ago First seen · 287 lines · 115 tokens per session scan A 707eac54364b

Subscribe to this mod's changes

skill-lint is a skill published in the GitHub repository cat-xierluo/legal-skills (778 stars, last pushed yesterday), with no licence file. It adds 115 tokens to every session and 5,573 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

skill-lint compared with skills from other repositories

skill-lint next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
skill-lintcat-xierluo/legal-skillsSkill778yesterdaynoneA115Claude Code, Codex
imagegenopenai/codexSkill133kyesterdayApache-2.0A113Codex
playwright-climicrosoft/playwrightSkill99kyesterdayApache-2.0A19Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79k4d agoMITA200Claude Code, Codex
systematic-debuggingobra/superpowersSkill313k3d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code
next-partial-prefetching-adoptionvercel/next.jsSkill143ktodayMITA103Claude Code