Borrowing it
Nothing to install: this file belongs to rjmurillo/ai-agents. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/rjmurillo/ai-agents/main/.claude/skills/decision-critic/SKILL.mdgit clone --depth 1 https://github.com/rjmurillo/ai-agentsWrote 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.
[](https://agentmods.dev/skills/rjmurillo/ai-agents/decision-critic)<a href="https://agentmods.dev/skills/rjmurillo/ai-agents/decision-critic"><img src="https://agentmods.dev/badge/skills/rjmurillo/ai-agents/decision-critic/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.
<a href="https://agentmods.dev/skills/rjmurillo/ai-agents/decision-critic"><img src="https://agentmods.dev/badge/skills/rjmurillo/ai-agents/decision-critic.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00061 | $0.01813 |
| Opus 5 | $0.00030 | $0.00907 |
| Sonnet 5 | $0.00012 | $0.00363 |
| Haiku 4.5 | $0.00006 | $0.00181 |
Grade A, and why
decision-critic 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.
How it starts
The opening of the file, as written. The whole thing — 187 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Decision Critic
When this skill activates, you become a structured decision critic. Your role is to systematically stress-test reasoning before commitment, surfacing hidden assumptions, verifying claims, and generating adversarial perspectives.
Triggers
Activate when the user:
Validate my thinking on...Poke holes in this decisionCriticize this approachStress-test this tradeoff- Presents a decision rationale and asks for criticism
Process
DECOMPOSITION (1-2) Extract claims, assumptions, constraints, judgments
| Assign stable IDs (C1, A1, K1, J1)
v
VERIFICATION (3-4) Generate verification questions
| Answer independently (factored verification)
v Mark: VERIFIED | FAILED | UNCERTAIN
CHALLENGE (5-6) Contrarian perspective + alternative framing
|
v
SYNTHESIS (7) Verdict: STAND (clean or flagged) | REVISE | ESCALATE
Scripts
decision-critic.py
python3 .claude/skills/decision-critic/scripts/decision-critic.py \
--step-number <1-7> \
--total-steps 7 \
--decision "<decision text>" \
--context "<constraints and background>" \
--thoughts "<your accumulated analysis, IDs, and status from all previous steps>"
Exit Codes:
- 0: Successful completion
- 1: Invalid arguments or missing required parameters
- 2: Analysis failed or incomplete
| Argument | Required | Description |
|---|---|---|
--step-number |
Yes | Current step (1-7) |
--total-steps |
Yes | Always 7 |
--decision |
Step 1 | The decision statement being criticized |
--context |
Step 1 | Constraints, background, system context |
--thoughts |
Yes | Your analysis including all IDs and status from prior steps |
What ships with it
12 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.
- references/critical-thinking-brandolinis-law.md 3.3 KB
- references/critical-thinking-falsifiability.md 3.2 KB
- references/critical-thinking-survivorship-bias.md 2.7 KB
- references/decision-pre-committed-metrics.md 4.3 KB
- references/mental-models-chestertons-fence.md 1.8 KB
- references/mental-models-conways-law.md 3.1 KB
- references/mental-models-fat-tails.md 4.7 KB
- references/mental-models-galls-law.md 2.3 KB
- references/quality-boy-scout-rule.md 1.9 KB
- references/rewrite-regression-check.md 7.1 KB
- references/strategic-thinking-systems-thinking.md 3.4 KB
- scripts/decision-critic.py 20 KB runs code
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.
- 6d ago First seen · 187 lines · 61 tokens per session scan A 43c7e0effd00
decision-critic is a skill published in the GitHub repository rjmurillo/ai-agents (45 stars, last pushed today), licensed MIT. It adds 61 tokens to every session and 1,813 once invoked, about $0.0003 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 2026-09-03.
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