MCPInstall

thinking-steel-manning

Before rejecting a proposal or reflexively agreeing, build the strongest faithful opposing case, state agreement conditions, then update or reaffirm.

Installs
604
Last 24h
—
Trending rank
—
Security
Not audited

Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/tjboudreaux/cc-thinking-skills --skill thinking-steel-manning
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads thinking-steel-manning automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

Steel-Manning

Core rule: Engage the best form of the opposing case, not a weak one. If your position survives that, reaffirm; if not, update.

When to Use

  • About to reject a proposal, design, or alternative approach.
  • Inclined to agree with the user/plan and risk sycophancy — construct the best case against first.
  • Design review, architecture debate, or conflict where trade-offs are real.
  • Validating your own preferred decision before locking it (strongest-countercase check).

When NOT to Use

  • Settled fact, security anti-pattern, or violated hard requirement — correct it; do not invent a defense of what is wrong.
  • You already agree for stated, weighed reasons — do not perform a fake debate.
  • Trivial or fully reversible choices where deliberation cost exceeds downside.
  • Live emergency — act first; steel-man in the post-incident review.
  • Need definition/assumption cleanup, not opposition — use socratic.
  • Need failure scenarios for a plan — use pre-mortem; need attacker paths — use red-team.

Procedure

  1. State the target claim or decision you are about to accept or reject, in one sentence. Name the real alternative if one exists.
  2. Extract the core insight behind the opposing position (or against your preferred path): the legitimate concern even if the proposed solution is wrong.
  3. Construct the strongest faithful case an informed advocate would make: best evidence, incentives, and failure modes — no mockery, no cherry-picked weak version, no motive attacks. Include base rates or concrete alternatives that could overturn the preferred path when relevant.
  4. State agreement / overturn conditions. Write one observation or result that would make you accept the opposing case (or abandon your preferred path), and whether you have looked for it.
  5. Engage that strong version, then decide. Respond to the steel-manned case on the merits. Output one of: accept opposing path, revise synthesis, or reaffirm original with explicit residual risks. Naming the countercase without accept/revise/reaffirm is incomplete. Stop once the decision updates or is reaffirmed with conditions.

Output

claim: <decision or proposal under test>
core_insight: <legitimate concern behind the opposition>
steel_man: <strongest faithful opposing argument>
overturn_if: <concrete observation that would change your mind>
looked_for_overturn: yes | no | partial
response_to_steel_man: <engagement on the merits>
decision: accept_opposing | revise | reaffirm
update: <what changed in belief or plan, or why reaffirm stands>
residual_risks: <what remains even after reaffirm/revise>

Verification

  • Falsify / stop: If the "steel man" is weaker than the original or attacks a caricature, rebuild it. If no overturn condition is stated, the check is incomplete. If evidence meets the overturn condition, you must update — reaffirmation is then false.
  • Over-application guard: Do not steel-man factual errors or hard constraints. Do not run a full adversarial brief for near-zero-cost reversible choices. Do not use this skill to delay an emergency response.

FAQ

What does the thinking-steel-manning skill do?

Before rejecting a proposal or reflexively agreeing, build the strongest faithful opposing case, state agreement conditions, then update or reaffirm.

How do I install thinking-steel-manning?

Run npx skills add https://github.com/tjboudreaux/cc-thinking-skills --skill thinking-steel-manning in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/thinking-steel-manning/ (personal) or .claude/skills/thinking-steel-manning/ (project).

Which AI agents can use thinking-steel-manning?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is thinking-steel-manning safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains thinking-steel-manning?

It is published by tjboudreaux in tjboudreaux/cc-thinking-skills. It has 604 recorded installs.

More from tjboudreaux/cc-thinking-skills

View all →

thinking-first-principles

tjboudreaux/cc-thinking-skills

When a constraint is treated as fixed, separate physics from convention, keep only independently supported primitives, and rebuild the simplest solution that satisfies real constraints.

thinking-red-team

tjboudreaux/cc-thinking-skills

For authorized security review of code, auth, or APIs you control, model the attacker, map the attack surface, and report only findings with a reproducible exploit path and verified mitigation.

Backend & APIs674 installs

thinking-pre-mortem

tjboudreaux/cc-thinking-skills

Before committing to a plan or launch, assume it already failed and reason backward through concrete causes — convert failure paths into mitigations, gates, and stop checks.

thinking-theory-of-constraints

tjboudreaux/cc-thinking-skills

When throughput or latency is pipeline-limited, identify the single binding constraint and exploit, subordinate, elevate, then recheck—ignore non-constraints.

649 installs

thinking-socratic

tjboudreaux/cc-thinking-skills

When a request is vague, assumption-laden, or "obvious," ask the few load-bearing questions that expose hidden requirements before building or committing.

631 installs

thinking-opportunity-cost

tjboudreaux/cc-thinking-skills

Before committing scarce time, people, or money, name the best forgone use of those resources and the value delta of the chosen path versus that alternative.

616 installs

Popular other skills

View category →

hyperframes-cli

heygen-com/hyperframes

The HyperFrames CLI by job - scaffold, check, look at frames, edit the timeline, preview, render locally or in the cloud, publish, project history - plus reading its JSON and recovering from build or render failures.

1.3M installs

triage

mattpocock/skills

Move issues and external PRs through a state machine of triage roles, categorise, verify, grill if needed, and write agent-ready briefs.

1M installs

ask-matt

mattpocock/skills

Ask which skill or flow fits your situation. A router over the skills in this repo.

778.4K installs

to-questionnaire

mattpocock/skills

Turn a decision you can't fully answer into a questionnaire for someone else to fill in.

508.9K installs

wait-what

mattpocock/skills

Stop. That last message did not land: re-pitch it.

459.7K installs

loop-me

mattpocock/skills

Grill me about specs for the workflows I want to build, within this workspace.

447.9K installs