claude-second-opinion

Review critical artifacts with Claude Opus 4.8 or Fable 5.

Updated Apr 11, 2026
One-click install
npx skills add https://github.com/wagnerlabs/skills --skill claude-second-opinion-wagnerlabs
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: claude-second-opinion
Source: https://github.com/wagnerlabs/skills/tree/main/claude-second-opinion
Command: npx skills add https://github.com/wagnerlabs/skills --skill claude-second-opinion-wagnerlabs

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires claude-cli, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill provides a time-consuming, blocking review of critical artifacts by Claude Opus 4.8 or Fable 5, ensuring quality and independent analysis.

Core Features & Use Cases

  • Blocking Review: Ensures the task pauses until the second-opinion process is complete.
  • Model Selection: Choose between Opus 4.8 and Fable 5 for different effort levels.
  • Use Case: Before implementing a non-trivial plan, use this Skill to get an independent review and improve quality.

Quick Start

Run the claude-second-opinion skill with the model and effort level, e.g., /claude-second-opinion opus max.

Frequently Asked Questions about claude-second-opinion

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I get an independent second-opinion review for a critical implementation plan?

Yes, you can review documents and analysis responses by passing them as artifacts to the Skill. It supports review of RCA, plans, implementations, documents, or analysis responses using Claude Opus 4.8 or Fable 5.

Do I need the Claude CLI to run an independent artifact review?

Yes, you need the Claude CLI installed and configured to use this Skill. The second-opinion review process specifically depends on the Claude CLI to invoke Claude Opus 4.8 or Fable 5 models for blocking artifact analysis.

What's the best way to review a root cause analysis before implementation?

The best way is to use this Skill with the Opus model at max effort for a blocking review. It provides an independent second opinion on your RCA or plan, inspecting your repository context to improve quality before you proceed with implementation.

How do I select between Claude Opus 4.8 and Fable 5 for artifact analysis?

You select the model by specifying it when you run the Skill, such as using the Opus or Fable argument. Choose between Opus 4.8 and Fable 5 to set different effort levels for your blocking second-opinion review of critical artifacts.

When should I not use a blocking second-opinion review?

You should not use this blocking review for trivial tasks or rapid iterations, as it intentionally pauses your workflow until the second-opinion process is complete. It is designed for time-consuming review of critical artifacts before non-trivial implementations.