Terminal & Other Platforms

Most users should use Claude Code Desktop — it's the easiest way to use Second. This page is for developers who prefer terminal or users exploring other options.

Claude Code CLI (Terminal)

For developers and power users who prefer the command line.

Prerequisites

• Node.js 18+ — Check with node -v. If missing, install from nodejs.org
• Claude Pro or Max subscription — $20/mo or $100/mo from claude.com/pricing

Install

macOS / Linux / Windows:

npm install -g @anthropic-ai/claude-code

Verify installation:

claude --version

If you see a version number, you're good. If you see "command not found", see troubleshooting below.

First-Time Login

Run claude in your terminal. It will open your browser for authentication:

claude

Sign in with your Anthropic account. Once authenticated, you'll be dropped into an interactive chat session. You're ready to use skills.

Using the Product Management OS (Paid Users)

After downloading and unzipping your Product Management OS:

cd ~/Documents/second-pm-os
claude

Type /welcome to set up your context. All 70+ skills are available via / commands.

Using Free Skills

Create a folder and add skills manually:

# Create a project folder with the right structure
mkdir -p ~/Documents/my-pm-skills/.claude/skills

# For each skill downloaded from mysecond.ai/skills:
mkdir -p ~/Documents/my-pm-skills/.claude/skills/prd-generator
mv ~/Downloads/SKILL.md ~/Documents/my-pm-skills/.claude/skills/prd-generator/SKILL.md

# Start Claude in that folder
cd ~/Documents/my-pm-skills
claude

Type /prd-generator (or whatever skill you added) to use it.

Troubleshooting

Claude Cowork

Claude Cowork can upload skills the same way as Claude Code Desktop (Settings → Capabilities → Skills), but it has limitations:

• Slash commands may not work consistently
• Auto-discovery of skills is limited
• Complex workflows may not execute properly

Recommendation: Use Claude Code Desktop for the full Second experience.