Hands for your AI.
Make your AI work beyond the chat. Melvin is one local execution layer for ChatGPT, Claude, Gemini and Grok: it lets your AI work with your files and your Mac apps, only where you allow it.
Files
Find anything
By name, kind, size or date, across the folders you allow.
Sort and rename
A clean up is planned before anything moves, so you can ask to see the list first. Each file is checked after it moves, and any change can be undone.
Space and duplicates
What is taking up space, and which files are identical, compared on your Mac.
Names, never contents
Your AI sees names, sizes and dates, never what is inside a file.
Reading inside documents and scans, comparing two versions of a file and checking that a save really landed are being tested now. On the home page
Your Mac
Your own apps
Mail, Notes, Calendar, Reminders, Contacts and Music, through their own controls.
From one app to another
A date from an email into your calendar, an address into a note, a reply into a draft.
What really happened
Each action reports its result. A draft waits in Mail until you press Send.
Your screen stays yours
Melvin works without bringing apps to the front or moving your cursor.
The actions other apps offer to Shortcuts, then the buttons and menus of an app that offers nothing else, are being tested, and are switched off for now. On the home page
Automations
When a file arrives
Tell your AI once what should happen to a file that lands in a folder: rename it, file it, tag it, add it to a list or draft an email.
Approved on your Mac
One window, one sentence: what it may do, and where. Sending or deleting still asks you each time.
Asks instead of guessing
A file it cannot place waits for your answer, given to your AI or on your Mac.
Undo any run
Files go back where they were, under their old names.
Automations are being tested, and are switched off for now. On the home page
Every AI you use
One pairing, one set of permissions and one set of tools, whichever AI you ask. Tasks are tracked and checked, your Mac carries on with them when the chat closes, and anything sensitive waits for you. Connect your AI
The Melvin Mac app also has a chat of its own. What it can do