Cai Documentation

AI-powered clipboard assistant for macOS. Select any text, get smart actions.

Quick Start

1. Download & install Cai
2. Set up a local LLM (optional — for AI-powered actions)
3. Select any text and press ⌥C

What is Cai?

Cai is a native macOS menu bar app that detects what’s on your clipboard and offers context-aware actions. Copy a meeting invite and it creates a calendar event. Copy an address and it opens Maps. Copy any text and ask your local AI to summarize, translate, or do anything you want — all without leaving your keyboard.

• Flexible — built-in model, local servers, or cloud providers
• Privacy first — your clipboard data never leaves your machine
• Context aware — detects what app you’re in and tailors actions to fit (e.g. Reply in email vs Slack)
• Keyboard driven — trigger with ⌥C, navigate and execute with keyboard shortcuts
• No accounts, no cloud, no telemetry

Guides

• How It Works — content detection, actions, and settings
• Keyboard Shortcuts — full shortcut reference
• Ask AI — run any AI prompt on your clipboard
• Custom Actions — save prompt and URL actions for instant access
• Troubleshooting — common issues and fixes