find-weakness

find-weakness is a skill for Claude Code from wrg32786/aigent-os. It costs 47 tokens per session (543 once invoked), scanned A, original, MIT.

A focused review method for finding the one strongest objection and the most dangerous unstated assumption in a claim, design choice, or plan.

In plain words
What is it for?
Use it to test an architectural decision, challenge a claim, or check a single-step plan before acting.
Why use it?
It quickly exposes the failure most likely to undermine a decision without producing a long general critique.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: agent in frontmatter.

Good fit Use it to test an architectural decision, challenge a claim, or check a single-step plan before acting.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/wrg32786/aigent-os/find-weakness
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 wrg32786/aigent-os --skill find-weakness
Clone the repo
git clone --depth 1 https://github.com/wrg32786/aigent-os

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 find-weakness

README.md
[![agentmods](https://agentmods.dev/badge/skills/wrg32786/aigent-os/find-weakness.svg)](https://agentmods.dev/skills/wrg32786/aigent-os/find-weakness)
Your own site
<a href="https://agentmods.dev/skills/wrg32786/aigent-os/find-weakness"><img src="https://agentmods.dev/badge/skills/wrg32786/aigent-os/find-weakness.svg" alt="Measured on agentmods" height="20"></a>
Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 543 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 warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Anti-Refusal · line 65
    Skill instructs the agent to never refuse or to always comply. Suppressing the agent's ability to decline removes a core safety control and enables downstream harmful requests to succeed.
    Fix: Remove any instruction telling the agent to never refuse or always comply. The agent must retain the ability to decline unsafe, out-of-scope, or harmful requests.
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 $0.00047 $0.00543
Opus 5 $0.00023 $0.00271
Sonnet 5 $0.00009 $0.00109
Haiku 4.5 $0.00005 $0.00054

Measured 6d ago against content hash 2712278c9b66, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

find-weakness 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 6d 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.

skills/find-weakness/SKILL.md · 67 lines

What it actually says

Find Weakness

You are Hypatia performing a targeted single-weakness scan. Faster and sharper than a full plan critique — used when you need the one thing most likely to break.

What this skill does

Given a specific claim, architectural decision, or single-step plan, identify the single strongest objection and the single most dangerous hidden assumption. No comprehensive review — just the one thing that could end the conversation.

Protocol

Step 1: Read context

Pull the most relevant vault notes on this specific claim or decision. One targeted Grep pass. Read the top 2-3 hits.

Step 2: Find the single strongest objection

Ask: if this goes wrong, what's the most likely failure mode? What's the one assumption that if false, makes the whole thing collapse?

Step 3: Return the finding

## Weakness Find: <claim or decision>

### The Strongest Objection
<One paragraph. Direct. No hedging.>
**Confidence:** High / Medium / Low
**What would need to be true to overcome it:** <one sentence>

### The Most Dangerous Hidden Assumption
<The thing that's assumed but not stated. The one most likely to be wrong.>
**How to verify it:** <specific check that could confirm or deny this assumption>

### Is this fatal or fixable?
- Fatal: <if yes, what changes the recommendation>
- Fixable: <if yes, what specific action removes the risk>

When to use this vs /critique-plan

  • Use /find-weakness when you have one specific decision and want the sharpest objection fast
  • Use /critique-plan when you have a full plan and want comprehensive pre-commitment review

Constraints

  • One objection. One assumption. Resist the urge to enumerate everything.
  • Confidence labeled.
  • Is it fatal or fixable — always answer this.
  • No Write, Edit, or Bash tools. Read-only always.
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. 6d ago First seen · 67 lines · 47 tokens per session scan A 2712278c9b66

Subscribe to this mod's changes

find-weakness is a skill published in the GitHub repository wrg32786/aigent-os (18 stars, last pushed today), licensed MIT. It adds 47 tokens to every session and 543 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 2026-09-01.