fragile

fragile is a skill for Claude Code from davesheffer/hunch. It costs 15 tokens per session (88 once invoked), scanned A, original, no licence file.

A report that ranks the most fragile parts of a codebase using evidence from Hunch, including affected files and functions, bug history, change frequency, and usage connections.

In plain words
What is it for?
Use it to identify fragile files or functions, review their past bugs and changes, and find missing safeguards.
Why use it?
It replaces general guesses about risky code with specific evidence about where failures are more likely.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the hunch plugin — 5 skills, 1 MCP server shipped together

Good fit Use it to identify fragile files or functions, review their past bugs and changes, and find missing safeguards.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/davesheffer/hunch/fragile
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 davesheffer/hunch --skill fragile
Clone the repo
git clone --depth 1 https://github.com/davesheffer/hunch

Made for: Claude Code.

Or install hunch, the plugin that ships this one along with the rest of its 5 skills, 1 MCP server.

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 fragile

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/davesheffer/hunch/fragile"><img src="https://agentmods.dev/badge/skills/davesheffer/hunch/fragile.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 88 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 $0.00015 $0.00088
Opus 5.5 $0.00006 $0.00035
Sonnet 5.5 $0.00003 $0.00018
Haiku 4.5 $0.00002 $0.00009

Measured 2mo ago against content hash 2057ad102f4c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

fragile 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 2mo 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.

plugin/skills/fragile/SKILL.md · 8 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 2mo ago First seen · 8 lines · 15 tokens per session scan A 2057ad102f4c

Subscribe to this mod's changes

fragile is a skill published in the GitHub repository davesheffer/hunch (15 stars, last pushed yesterday), with no licence file. It adds 15 tokens to every session and 88 once invoked, about $0.0001 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 2026-08-31.

Related

fragile compared with skills from other repositories

fragile next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
fragiledavesheffer/hunchSkill15yesterdaynoneA15Claude Code
diagram-createyarlson/yarstackSkill3yesterdayMITA108Claude Code, Codex
code-reviewyarlson/yarstackSkill3yesterdayMITA76Claude Code
tech-debt-audityarlson/yarstackSkill3yesterdayMITA76Claude Code
lesson-recordyarlson/yarstackSkill3yesterdayMITA115Claude Code
changes-reportyarlson/yarstackSkill3yesterdayMITA54Claude Code
jira-issue-createyarlson/yarstackSkill3yesterdayMITA53Claude Code