Helicon

Helicon is a free, MIT-licensed desktop app for Windows, macOS and Linux, plus a VS Code extension, for Meta's Muse Code CLI. It drives the muse command you already have: no API key, no second bill.

Threads from every project sit in one sidebar, edits show as inline diffs where they happened, approvals come one at a time with the exact command shown, and workflows, side chats and SSH projects are built in. A usage page prices each thread at published API rates and shows your five-hour and weekly limits.

It is for developers who use Muse Code across several projects and want to see what the agent changed, what it is about to run, and what it costs. Unofficial community project, not affiliated with Meta.