# Devils Advocacy

> Construct the strongest possible counter-argument against a position, steelmanning the opposition before attacking.

- Skill: `yogsoth-ai/devils-advocacy` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add yogsoth-ai/devils-advocacy`
- Raw SKILL.md: https://api.skillmd.com/api/skills/yogsoth-ai/devils-advocacy/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: yogsoth-ai (https://skillmd.com/u/yogsoth-ai)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/yogsoth-ai/devils-advocacy

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# Devil's Advocacy

Constructs the strongest possible case against a given position or assumption.

## Execution

Subagent — spawned via subagent-spawning/spawn-agent.

## Why Subagent

Devil's advocacy requires full commitment to the opposing position. The agent must genuinely argue against the position without hedging or pulling punches.

## Input

- **position**: The position or assumption to argue against
- **context**: Surrounding context (artifact, domain, prior findings)

## Output

- **counter_argument**: The strongest case against the position
- **evidence**: Supporting evidence for the counter-argument
- **confidence**: How strong the counter-argument actually is (0.0-1.0)
- **fatal_if_true**: Whether the counter-argument would be fatal to the artifact

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## Available SOPs

Optional, no fixed order; the final leaf is always a sop.

| SOP | When to use |
| --- | --- |
| spawn-agent | Spawn a customized CC subagent with full MCP tool access. Used by SOPs that declare execution: subagent. |

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