Point
Click a person or an object in the shot. Your agent knows exactly which one you mean.
Editor Harness for Mac
Your agent does the editing.
Nothing lands without your say-so.
The video editor made for working with Claude Code and Codex. Show it what you mean, right on the picture. Your agent makes the edit, and nothing changes until you approve it.
For Claude Code and Codex · Mac with Apple silicon · macOS 26 or later
YOU DIRECT. YOUR AGENT EDITS.
See it take shape
You make the calls.
Your agent does the work.
Ask for a tighter cut, a warmer look or a cleaner mix. Each change arrives ready to preview, and you decide what stays.
Join the alphaAN EDIT TAKING SHAPEEarlier version
THE EDIT
Two angles. One story.
Shown in an earlier version of Editor Harness.
Colour
Describe the look.
See exactly what changed.
Ask for warmth, contrast or a whole new mood. Compare before and after, and keep only what feels right.
AfterCOLOUR
Your look. Your call.
Illustration using the original footage.
Colour
Say how it should feel.
Keep what feels right.
Direct
Point. Draw. Say it.
Your agent takes it from there.
Show your agent what you mean, right on the picture.
Draw
Sketch a path, a box or a line on the picture to show where things should go.
Say it
Type or speak your direction. Your agent takes it from there.
The guest, selected in one click. A direction, ready to send.
Your say-so
Every change waits for you.
Nothing lands until you approve.
Preview each edit against your current cut. Keep it, ask for another pass, or let it go. You can always undo.
A complete editor
A full editor.
Still yours to control.
Take over whenever you like. Your agent carries on from wherever you leave it.
Your whole story, on one timeline.
Colour and Sound images show an earlier version of Editor Harness.
See your story at a glance as a film strip. Double-click to open the full timeline and fine-tune every cut.
Shape exposure, contrast and saturation, with scopes to check every frame.
See every word and beat in the waveform. Set levels and fades by hand, or just ask.
Just ask
Say what you want.
Review what you get.
“Tighten the interview. Keep the laugh.”
A shorter, sharper cut, with the moment you love intact.
“Make it feel like golden hour.”
A warmer look across every shot, matched from one to the next.
“Bring the music down under her voice.”
Dialogue you can hear, with the music still carrying the mood.
“Put the title behind her head.”
A title that sits in the scene, not on top of it.
Before you start
About Editor Harness.
01What is Editor Harness?
A Mac video editor made for working with an AI agent. You direct: point at the picture, draw on it or say what you want. Your agent makes the edit. Every change waits for your approval, and a full editor is always there when you want to take over.
02Which agents does it work with?
Claude Code and Codex. Setup instructions come with the app.
Join the alpha →03Can I still edit by hand?
Yes. The timeline, colour, sound and titles are all yours to adjust at any time, and your agent carries on from wherever you leave it.
04What will it cost?
A seven-day free trial with no card required, then £1 for your first month and £4.99 a month after that. Cancel any time. Alpha members hear first when subscriptions open.
View pricing →05Is Pro included?
Not yet. Pro is not publicly available and is not included in the free trial. Editor Harness for iPhone and iPad is on hold.
Editor Harness for Mac
You direct.
Your agent edits.
Mac with Apple silicon · macOS 26 or later