ntanner-ctrl

Devils Advocate — Testing skill for Claude Code

Testing community

REQUIRED after completing ANY spec or plan.

How to install Devils Advocate

Installs to ~/.claude/skills/ntanner-ctrl-claude-sail-devils-advocate/SKILL.md

Terminal

mkdir -p ~/.claude/skills/ntanner-ctrl-claude-sail-devils-advocate && curl -fsSL https://raw.githubusercontent.com/ntanner-ctrl/claude-sail/HEAD/commands/devils-advocate.md -o ~/.claude/skills/ntanner-ctrl-claude-sail-devils-advocate/SKILL.md

Restart Claude Code, or start a new session, for it to be picked up.

What Devils Advocate does

description: REQUIRED after completing ANY spec or plan. You MUST challenge assumptions — unchallenged plans fail in production. arguments:

name: plan description: Plan name or path to challenge (optional, uses current context) required: false

Devil's Advocate

Challenge every assumption in a plan. Find the "what ifs" that weren't considered. This is the first line of adversarial review—fast, local, and focused on assumptions.

Role

Systematically challenge assumptions

Alternatives in Testing

Notion Spec To Implementation — Convert Notion specs into linked implementation plans and tasks 14.6k ★
Brainstorm Experiments Existing — Design experiments to test assumptions for existing products 7.8k ★
Regen API — Regenerate the OpenAPI spec and web API client after server API changes 2.5k ★