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skill.check_against_rules

skill.check_against_rules is a skill for Claude Code from gpsaggese/helpers. It costs 10 tokens per session (328 once invoked), scanned A, original, Apache-2.0.

A rule-checking workflow for a file that finds the conventions that apply and writes a separate plan of required changes. It leaves the original file unchanged.

In plain words
What is it for?
Use it to inspect a file against its mapped rule set, list violations by importance and effort, and save the proposed work in a plan file.
Why use it?
It turns project rules into a concrete, ordered checklist before anyone edits the file, reducing accidental changes and missed requirements.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter; reads .claude/ paths.

not rated 158repo +1 today A scan 10 tokens original Apache-2.0

Good fit Use it to inspect a file against its mapped rule set, list violations by importance and effort, and save the proposed work in a plan file.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/gpsaggese/helpers/skill.check_against_rules
View source ↗ gpsaggese/helpers
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 gpsaggese/helpers --skill skill.check_against_rules
Clone the repo
git clone --depth 1 https://github.com/gpsaggese/helpers

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 skill.check_against_rules

README.md
[![agentmods](https://agentmods.dev/badge/skills/gpsaggese/helpers/skill.check_against_rules/github.svg)](https://agentmods.dev/skills/gpsaggese/helpers/skill.check_against_rules)
Your own site
<a href="https://agentmods.dev/skills/gpsaggese/helpers/skill.check_against_rules"><img src="https://agentmods.dev/badge/skills/gpsaggese/helpers/skill.check_against_rules/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.check_against_rules

Your own site · 80×15
<a href="https://agentmods.dev/skills/gpsaggese/helpers/skill.check_against_rules"><img src="https://agentmods.dev/badge/skills/gpsaggese/helpers/skill.check_against_rules.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 10 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 328 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.
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 $0.00010 $0.00328
Opus 5.5 $0.00004 $0.00131
Sonnet 5.5 $0.00002 $0.00066
Haiku 4.5 $0.00001 $0.00033

Measured yesterday against content hash ff069eee328a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

skill.check_against_rules 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 yesterday.

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/skill.check_against_rules/SKILL.md · 42 lines

What it actually says

Goal

  • Find the violations of the rules that apply to the given file <FILE> and create a plan to fix them

Workflow

Select Rules

  • If the user specifies a set of rules, apply those
  • Otherwise, read @.claude/rules.md, which maps file types to rule sets
    • Find which <RULE_FILE> applies to <FILE>
    • Print it as 
      Rules: <RULE_FILE>

Read Rules

  • Read <RULE_FILE>
  • Check its rules one by one on <FILE>
  • List the unmet rules, ordered by importance and effort

Save the Plan to File

  • Do not implement any change. Create <FILE>.plan.md describing all the transformations needed to follow the rules, without changing the content or intention of <FILE>
  • Say in the plan file how it was generated, with this line right after the title: 
    - Generated by `.claude/skills/skill.check_against_rules/SKILL.md`

Verification

  • <FILE> itself was not modified
  • <FILE>.plan.md lists every violation found, ordered by importance and effort
  • The plan does not change the content or intention of <FILE>
  • The plan file says that it was generated by .claude/skills/skill.check_against_rules/SKILL.md
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. yesterday First seen · 42 lines · 10 tokens per session scan A ff069eee328a

Subscribe to this mod's changes

skill.check_against_rules is a skill published in the GitHub repository gpsaggese/helpers (158 stars, last pushed today), licensed Apache-2.0. It adds 10 tokens to every session and 328 once invoked, about $0.0000 per session on Opus 5.5. 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 2026-11-06.

Code reviewPlanning
Related

skill.check_against_rules compared with skills from other repositories

skill.check_against_rules next to 6 skills from other repositories
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skill.check_against_rulesgpsaggese/helpersSkill158todayApache-2.0A10Claude Code
autoreviewopenclaw/clawhubSkill9.5ktodayMITA17Claude Code, Codex
omh-code-reviewrlaope/oh-my-hermesSkill5.2ktodayMITA48Claude Code, Codex
agent-teams-simplify-and-hardenLeoYeAI/openclaw-master-skillsSkill2.2k6d agoMITA115Claude Code, Codex
revdiff-planumputun/revdiffSkill9472d agoMITA84Claude Code
explore-unknownsdzhng/skillsSkill1.4ktodayMITA162Claude Code, Codex
re0-mergeLilMGenius/paperthinSkill1.4k4d agoMITA70Claude Code