What are Claude Code Skills?

Claude Code Skills are reusable prompt templates stored as markdown files in your project's .claude/skills/ directory. They let you codify best practices and common workflows into slash commands that Claude follows consistently.

How do I create a Claude Code Skill?

Create a markdown file in .claude/skills/ with instructions for Claude. The filename becomes the command name — for example, .claude/skills/code-review.md can be invoked with /code-review during a Claude Code session.

Can I share skills with my team?

Yes. Skills stored in .claude/skills/ can be committed to version control so every team member has access to the same standardized workflows. You can also organize skills into subdirectories by category.

What is the difference between project and global skills?

Project skills (.claude/skills/) are specific to the current project and are committed to git. Global skills (~/.claude/skills/) are personal skills available across all your projects.

second-opinion

New

8Community RegistryGeneralby alberduris

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

Community PluginView Source

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

Create the skills directory

mkdir -p .claude/skills

Download the skill file

mkdir -p .claude/skills && curl -o .claude/skills/second-opinion.md https://raw.githubusercontent.com/alberduris/skills/main/SKILL.md

Invoke in Claude Code

/second-opinion

View source on GitHub

Frequently Asked Questions

What is second-opinion?

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

How to install second-opinion?

To install second-opinion, create the .claude/skills directory in your project, then run the curl command to download the skill file. Once installed, invoke it in Claude Code with /second-opinion.

What is second-opinion best for?

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