Install
Prepare strategic context outside Luna, then import.
Claude Code 
The fullest version. Adds export and resume commands.
Works in the Claude Code CLI, VS Code, and the Code tab in Claude Desktop.
claude plugin marketplace add lunastak/tools
claude plugin install lunastak@lunastak-tools
Then in any Claude Code session:
/lunastak:decision-stack— start a session. Bring docs, or answer guided questions./lunastak:export— produce the JSON context bundle./lunastak:resume— continue from a saved bundle.
Source: github.com/lunastak/tools.
Claude Project 
Roll your own. Paste the custom instructions into a Project on Claude.ai.
Works with Claude.ai, Claude Desktop, and the Claude mobile app.
Gemini Gem 
Pre-configured Gem. Open it and follow the prompts.
Want your own? Create a Gem from the template.
Custom GPT 
Pre-configured GPT. Open it and follow the prompts.
Want your own? Create a GPT from the template.