s4h-logic-council

s4h-logic-council is a skill for Claude Code from human-avatar/skills-for-humanity. It costs 147 tokens per session (2,021 once invoked), scanned A, original, MIT.

A panel of five reasoning reviewers that examines an argument, plan, or decision using different approaches, then combines their findings into a verdict. The approaches include formal logic, systems thinking, probability-based reasoning, first-principles analysis, and adversarial review.

In plain words
What is it for?
Use it to pressure-test important plans, technical proposals, arguments, and decisions from several angles.
Why use it?
Different reviewers can expose different weaknesses, such as invalid steps, ignored feedback loops, unlikely assumptions, or strong counterarguments.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions subagents; names the AskUserQuestion tool.

Part of the skills-for-humanity plugin — 197 skills, 1 hook shipped together

Good fit Use it to pressure-test important plans, technical proposals, arguments, and decisions from several angles.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/human-avatar/skills-for-humanity/s4h-logic-council
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 human-avatar/skills-for-humanity --skill s4h-logic-council
Clone the repo
git clone --depth 1 https://github.com/human-avatar/skills-for-humanity

Made for: Claude Code.

Or install skills-for-humanity, the plugin that ships this one along with the rest of its 197 skills, 1 hook.

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 s4h-logic-council

README.md
[![agentmods](https://agentmods.dev/badge/skills/human-avatar/skills-for-humanity/s4h-logic-council/github.svg)](https://agentmods.dev/skills/human-avatar/skills-for-humanity/s4h-logic-council)
Your own site
<a href="https://agentmods.dev/skills/human-avatar/skills-for-humanity/s4h-logic-council"><img src="https://agentmods.dev/badge/skills/human-avatar/skills-for-humanity/s4h-logic-council/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 s4h-logic-council

Your own site · 80×15
<a href="https://agentmods.dev/skills/human-avatar/skills-for-humanity/s4h-logic-council"><img src="https://agentmods.dev/badge/skills/human-avatar/skills-for-humanity/s4h-logic-council.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 147 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,021 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 pass 7 Sept 2026
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 $0.00147 $0.02021
Opus 5 $0.00073 $0.01010
Sonnet 5 $0.00029 $0.00404
Haiku 4.5 $0.00015 $0.00202

Measured 9d ago against content hash 8b9411cf0f53, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

s4h-logic-council 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 9d 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/s4h-logic-council/SKILL.md · 190 lines

How it starts

The opening of the file, as written. The whole thing — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Logic Council

A single reviewer catches some flaws in reasoning. A council catches more — because different reasoning frameworks find different failure modes. Formal logic catches invalid inferences. Systems thinking catches missing feedback loops. Bayesian reasoning catches base-rate neglect. First principles reasoning catches assumptions dressed as facts. Adversarial logic catches the strongest counter-argument you haven't faced yet.

Run all five. Let them disagree. The synthesis tells you where your reasoning is load-bearing and where it's hollow.


The Five Reasoning Frameworks

1. Formal Logic

Tests deductive structure. Are premises stated? Do they support the conclusion? Are necessary and sufficient conditions correctly identified? Finds: invalid inferences, unstated assumptions doing hidden work, conclusions that overreach their premises, equivocation across terms.

2. Systems Thinking

Treats the problem as a system with feedback loops, delays, and emergent properties. Asks: what happens over time? What non-linear effects appear at scale? What second and third-order consequences has the reasoning ignored? Finds: linear thinking applied to non-linear systems, missing feedback loops, unintended consequences, solutions that fix the proximate cause while worsening the root cause.

3. Bayesian Reasoning

Evaluates probabilistic claims and evidence. Asks: what are the base rates? How much should this evidence actually update our beliefs? Is confidence calibrated to evidence? Finds: base-rate neglect, overconfidence from anecdote, underweighted prior probability, failure to consider how likely the evidence would be under alternative hypotheses.

4. First Principles

Strips away assumptions and rebuilds from fundamentals. Asks: what do we actually know is true, vs what are we taking for granted? Is the problem framed correctly, or has the framing inherited constraints that don't belong? Finds: assumptions treated as facts, inherited framings that foreclose better solutions, analogies stretched past their breaking point.

Read the full file on GitHub · 190 lines

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. 9d ago First seen · 190 lines · 147 tokens per session scan A 8b9411cf0f53

Subscribe to this mod's changes

s4h-logic-council is a skill published in the GitHub repository human-avatar/skills-for-humanity (223 stars, last pushed 1mo ago), licensed MIT. It adds 147 tokens to every session and 2,021 once invoked, about $0.0007 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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