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skill.check_refs

skill.check_refs is a skill for Claude Code from gpsaggese/helpers. It costs 8 tokens per session (340 once invoked), scanned B, original, Apache-2.0.

A validation workflow for checking references, required structure, and rule compliance across skill and rule Markdown files.

In plain words
What is it for?
Use it to scan the files, report confirmed violations in the project's required format, and ask which reported problems should be fixed.
Why use it?
It finds missing references and format violations across the whole skill collection instead of checking files one at a time.

Skill for Claude Code

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

not rated 158repo +1 today B scan 8 tokens original Apache-2.0

Good fit Use it to scan the files, report confirmed violations in the project's required format, and ask which reported problems should be fixed.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/gpsaggese/helpers/skill.check_refs
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_refs
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_refs

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/gpsaggese/helpers/skill.check_refs"><img src="https://agentmods.dev/badge/skills/gpsaggese/helpers/skill.check_refs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 8 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 340 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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 $0.00008 $0.00340
Opus 5.5 $0.00003 $0.00136
Sonnet 5.5 $0.00002 $0.00068
Haiku 4.5 $0.00001 $0.00034

Measured yesterday against content hash 9ed7210058ca, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

skill.check_refs scanned grade B 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 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.

Enumerates other installed skillsmediumAgent snooping

Other skills' SKILL.md files reveal prompts, capabilities and secrets that should be invisible to peers.

> find .claude/skills -name "*.md"
.claude/skills/skill.check_refs/SKILL.md · 47 lines

What it actually says

Goal

  • Check that all the skill and rule files have references

Workflow

Find Files

  • Find all markdown files: SKILL.md and <TOPIC>.rules.md 
    > find .claude/skills -name "*.md"

Read Context

  • Read .claude/skills/skill.rules.md for context on rules

Check Rules

  • For each file, apply all the rules below and report violations as described

Check Files Existence

  • Make sure the file follows .claude/skills/skill.rules.md # SKILL.md File Format

Check Header References

  • Make sure the file follows .claude/skills/skill.rules.md # References and Dependencies

Check for Other Violations

  • Use the rules in .claude/skills/skill.rules.md to find clear violations
  • Report a violation only when certain it is one

Report Violations

  • Report all violations in a file cfile using the format in .claude/skills/cfile.rules.md

Ask the User Which Problems to Fix

  • Ask which problems to fix by printing a numbered list of problems

Verification

  • Every file under .claude/skills matching SKILL.md or <TOPIC>.rules.md was checked
  • cfile follows the format in .claude/skills/cfile.rules.md
  • Every reported violation is one the reviewer is confident about
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 · 47 lines · 8 tokens per session scan B 9ed7210058ca

Subscribe to this mod's changes

skill.check_refs is a skill published in the GitHub repository gpsaggese/helpers (158 stars, last pushed today), licensed Apache-2.0. It adds 8 tokens to every session and 340 once invoked, about $0.0000 per session on Opus 5.5. A static security scan graded it B with 1 finding (enumerates other installed skills). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-06.

Code review
Related

skill.check_refs compared with skills from other repositories

skill.check_refs next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
skill.check_refsgpsaggese/helpersSkill158todayApache-2.0B8Claude 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