compare-contrast
About
This skill runs a multi-agent debate to compare two technical perspectives using evidence from your codebase. It employs three different AI models as subagents to gather arguments and code references for each option. Use it when you need an evidence-based recommendation for technical decisions.
Quick Install
Claude Code
Recommended/plugin add https://github.com/majiayu000/claude-skill-registrygit clone https://github.com/majiayu000/claude-skill-registry.git ~/.claude/skills/compare-contrastCopy and paste this command in Claude Code to install this skill
Documentation
Compare Contrast
Overview
Run a multi-agent debate using CLI subagents. Each agent argues one perspective with evidence. Synthesize and recommend a path.
Inputs
- Topic or decision
- Perspective A
- Perspective B
Workflow
- Clarify the decision, constraints, and success criteria.
- Run six subagents (Codex, Gemini, Claude) using the commands below.
- Group findings by perspective and compare evidence strength.
- Recommend a winner and note when the other option is preferable.
Subagent Commands
Codex A
codex exec -m gpt-5.2 -s read-only -c model_reasoning_effort="low" --skip-git-repo-check \
"Argue for {PERSPECTIVE_A} on {TOPIC}. Find codebase evidence with file paths and line numbers."
Codex B
codex exec -m gpt-5.2 -s read-only -c model_reasoning_effort="low" --skip-git-repo-check \
"Argue for {PERSPECTIVE_B} on {TOPIC}. Find codebase evidence with file paths and line numbers."
Gemini A
CLOUDSDK_CORE_PROJECT="" GOOGLE_CLOUD_PROJECT="" GCLOUD_PROJECT="" GEMINI_API_KEY=${GEMINI_API_KEY} \
gemini -m gemini-3-pro-preview -o text "Argue for {PERSPECTIVE_A} on {TOPIC}. Provide evidence with file paths and line numbers."
Gemini B
CLOUDSDK_CORE_PROJECT="" GOOGLE_CLOUD_PROJECT="" GCLOUD_PROJECT="" GEMINI_API_KEY=${GEMINI_API_KEY} \
gemini -m gemini-3-pro-preview -o text "Argue for {PERSPECTIVE_B} on {TOPIC}. Provide evidence with file paths and line numbers."
Claude A
claude --model haiku -p "Argue for {PERSPECTIVE_A} on {TOPIC}. Provide evidence with file paths and line numbers."
Claude B
claude --model haiku -p "Argue for {PERSPECTIVE_B} on {TOPIC}. Provide evidence with file paths and line numbers."
Output
- Side-by-side comparison
- Evidence-backed recommendation
GitHub Repository
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