second-opinion

Q: How to install second-opinion?

Add a marketplace: /plugin marketplace add . Then add the config to /plugin install second-opinion@ . Finally, /plugin in Claude Code.

Q: What is second-opinion best for?

second-opinion is categorized under General.

New

9Community RegistryGeneralby alberduris

Consult GPT-5 Pro for alternative perspectives; supports context injection, web search, and configurable models

First seen 5/22/2026

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Summary

This skill lets you consult GPT-5 Pro for alternative perspectives on your code, architecture, or decisions.

It supports context injection, web search, and configurable models, making it ideal for getting a second opinion without leaving Claude Code.

Overview

![License: MIT](https://opensource.org/licenses/MIT) ![Plugins](https://github.com/alberduris/claude-code-marketplace) ![Claude Code](https://www.claude.com/product/claude-code) <img src="assets/claude-icon.png" alt="Claude" height="18" style="margin-left: 6px; vertical-align: middle;">

Claude Code Plugins Marketplace by @alberduris.

This git repository is a Claude Code Marketplace; in other words, a way to distribute a collection of Plugins that augment Claude Code's capabilities via Commands, Skills, Agents, or Hooks.

Quick Understanding

Zero-bullshit definitions without AI slop so we all know what we're talking about.

Marketplace: A git repository with a `.claude-plugin/marketplace.json` file listing available Plugins.

Plugin: A packaged directory containing one or more of the following, plus `.claude-plugin/plugin.json` with metadata (name, version, author):

•Skill: Directory with SKILL.md + supporting files (scripts, templates, docs).
•Command: Single .md file.
•Agent: Isolated autonomous agent launched via Task tool; runs multi-turn conversation with tools (agent ↔ tools), returns final result. (Learn more)
•Hook: Script triggered by events (file edits, tool calls, user prompt submission).

Invocation: Both Skills and Commands can be invoked 3 ways: manually (/name), by Claude via Skill tool, or auto-discovered by context. The only difference is structure. Use disable-model-invocation: true in frontmatter if you want manual-only.

Quick Start

Standard Installation

Add the Marketplace and install Plugins through Claude Code:

bash

# Add this Marketplace
/plugin marketplace add alberduris/claude-code-marketplace

# Install a Plugin
/plugin install second-opinion

One-Command Installation

Use the Claude Plugins CLI to add the Marketplace and install Plugins in one step:

bash

claude plugins install alberduris/claude-code-marketplace second-opinion

Available Plugins

Plugin	Description
second-opinion	Consult GPT-5 Pro for alternative perspectives on technical decisions
langfuse-traces	Query Langfuse traces for debugging and observability
slack-reminders	Schedule future reminders via Slack notifications

See each plugin's README for setup and usage instructions.

License

MIT

Install & Usage

Add a marketplace

/plugin marketplace add <org/repo>

Install the plugin

Add the configuration to /plugin install second-opinion@<marketplace>

Manage with /plugin

/plugin

Use Cases

Get an alternative code review from GPT-5 Pro on a pull request diff.

Compare architectural decisions between two approaches using an external AI model.

Validate a debugging hypothesis by asking GPT-5 Pro to analyze error logs.

Brainstorm alternative solutions for a complex algorithm implementation.

Check for potential security vulnerabilities in your code from a different AI perspective.

Obtain a second opinion on API design choices before finalizing.

Usage Examples

/second-opinion Review this function for edge cases: [paste code]

Ask GPT-5 Pro to suggest alternative approaches for this database schema design.

/second-opinion --search latest best practices for React state management and compare with my current approach.

View source on GitHub

Security Audits

LicenseUnknownSourceWarnRepositoryPass

Frequently Asked Questions

What is second-opinion?

This skill lets you consult GPT-5 Pro for alternative perspectives on your code, architecture, or decisions. It supports context injection, web search, and configurable models, making it ideal for getting a second opinion without leaving Claude Code.

How to install second-opinion?

To install second-opinion: add a marketplace (/plugin marketplace add <org/repo>), then add the config to /plugin install second-opinion@<marketplace>. Finally, /plugin in Claude Code.

What is second-opinion best for?

second-opinion is a plugin categorized under General. Created by alberduris.

What can I use second-opinion for?

second-opinion is useful for: Get an alternative code review from GPT-5 Pro on a pull request diff.; Compare architectural decisions between two approaches using an external AI model.; Validate a debugging hypothesis by asking GPT-5 Pro to analyze error logs.; Brainstorm alternative solutions for a complex algorithm implementation.; Check for potential security vulnerabilities in your code from a different AI perspective.; Obtain a second opinion on API design choices before finalizing..