Phone A Friend

Quality score: 70/100 · Category: General · Sub-category: general-misc

Spawn an Opus sub-agent in extended-thinking max-effort mode to debate, critique, and pressure-test the primary agent's current thinking through an unbounded multi-turn dialogue, terminating when the agents either reach genuine consensus or cleanly agree to disagree. Supports escalating clarifying questions to the human user mid-debate, and supports the user sending the debate back for another round (jury-room rule). Use when the user invokes "phone a friend", asks for a "second opinion", "sanity check", "debate this with another model", or otherwise signals they want rigorous adversarial review of an approach, plan, design, diagnosis, or decision before proceeding.

What this skill does

Phone A Friend is a production-ready Claude Code skill (quality score 70/100) in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/phone-a-friend/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user invokes "phone a friend", asks for a "second opinion", "sanity check", "debate this with another model", or otherwise signals they want rigorous adversarial review of an approach, plan, design, diagnosis, or decision before proceeding.

Who uses this skill

The Phone A Friend skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/phone-a-friend
curl -L https://claudskills.com/skills/phone-a-friend/SKILL.md \
  -o ~/.claude/skills/phone-a-friend/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/phone-a-friend/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/phone-a-friend/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\phone-a-friend\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

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Part of ClaudSkills — the open registry for Claude Code skills. · What's New · Install guide · About · llms.txt

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