challenge-decision

challenge-decision is a skill for Claude Code from megamen32/LastHumanCommit. It costs 26 tokens per session (197 once invoked), scanned A, original, MIT.

A method for independently testing an important proposal or combined decision with counterexamples, alternative explanations, and evidence.

In plain words
What is it for?
Use it to review an architecture or product decision, return a supported or uncertain judgement, and define the smallest useful validation.
Why use it?
It helps reveal hidden assumptions, missed consequences, and claims that have not been properly checked before implementation.

Skill for Claude Code

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

Part of the last-human-commit plugin — 22 skills, 1 command, 10 hooks shipped together

Good fit Use it to review an architecture or product decision, return a supported or uncertain judgement, and define the smallest useful validation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/megamen32/lasthumancommit/challenge-decision
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 megamen32/LastHumanCommit --skill challenge-decision
Clone the repo
git clone --depth 1 https://github.com/megamen32/LastHumanCommit

Made for: Claude Code.

Or install last-human-commit, the plugin that ships this one along with the rest of its 22 skills, 1 command, 10 hooks.

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 challenge-decision

README.md
[![agentmods](https://agentmods.dev/badge/skills/megamen32/lasthumancommit/challenge-decision/github.svg)](https://agentmods.dev/skills/megamen32/lasthumancommit/challenge-decision)
Your own site
<a href="https://agentmods.dev/skills/megamen32/lasthumancommit/challenge-decision"><img src="https://agentmods.dev/badge/skills/megamen32/lasthumancommit/challenge-decision/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 challenge-decision

Your own site · 80×15
<a href="https://agentmods.dev/skills/megamen32/lasthumancommit/challenge-decision"><img src="https://agentmods.dev/badge/skills/megamen32/lasthumancommit/challenge-decision.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 197 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 $0.00026 $0.00197
Opus 5.5 $0.00010 $0.00079
Sonnet 5.5 $0.00005 $0.00039
Haiku 4.5 $0.00003 $0.00020

Measured 1mo ago against content hash 6ce516f3c84c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

challenge-decision 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 1mo 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.

plugins/last-human-commit/common/skills/challenge-decision/SKILL.md · 21 lines

What it actually says

Independent challenge

Use a fresh Adviser session or the compatibility Critic role, not just the author asking itself to be critical. Receive the raw objective, constraints, selected proposal/synthesis and verifiable evidence. The author does not dictate a verdict.

Find assumptions that could change the outcome. Seek a counterexample, a simpler complete solution, an inconsistent dependency, a missed user consequence or a claim whose proof is insufficient. Distinguish substantive objections from taste. Recommend an improved solution when justified and specify the smallest check that could settle important disagreement.

Return SUPPORTED, REVISE or NEEDS_EVIDENCE with reasons and next action. No mandatory criticism quota and no extra human approval gate. Reassess a materially changed synthesis; prior approval of its ingredients is not approval of the whole.

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. 1mo ago First seen · 21 lines · 26 tokens per session scan A 6ce516f3c84c

Subscribe to this mod's changes

challenge-decision is a skill published in the GitHub repository megamen32/LastHumanCommit (2 stars, last pushed yesterday), licensed MIT. It adds 26 tokens to every session and 197 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 2026-09-05.

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