Your harness.
Your way.

The agent works. You go on with your life. Keep the status in sight, dress the app in another theme and get a nudge when it's your turn.

6 customization tools. 5 on Basic FREE.
For Claude Code and Codex, depending on the tool.

6 tools7 themes in Mod Themes1 click to changeyour workspace_

A setup
that looks like you.

Flip a switch. Swap the palette. Simulate a break. Try here how small signals make work easier to keep track of.

harnessup / customization benchinteractive demo

What stays in sight

personal · working · sitework · idle for 02 min
Look preview · Claude Code

YouAdjust the details of my page.

AgentWorking on the last tweaks…

Claude Code · CLIsite-01 · 8 turns · 12,400 tokens · US$ 0.08 · 00 min · 5h window
Try 7 palettes
Simulate an event

Illustrative preview. Nothing will change in your apps.

The palettes are visual examples, not a reproduction of the product's seven themes. In the app, pills sit over the windows; the Status Bar appears in the CLI. Here, both meet so you can try them.

Watch less.
Notice more.

The agent may be working, waiting for you or idle for too long. Each tool handles one of these moments, without making you live in the terminal window.

Basic FREE

Info Pills

One line per session, over the windows: count, status, idle time and label. With several sessions open, you know which one finished without switching screens.

Pills let clicks through. Your work stays reachable underneath them.
Basic FREE

Permission Push

If the agent stopped to ask for permission, a Windows notification arrives right away. That way the work doesn't sit idle for half an hour just because you were in another window.

The alert arrives even with the panel closed. The decision to allow stays with you.
Basic FREE

Status Bar

The session receipt follows you in the footer of the Claude Code CLI. Colored pills show id, turns, tokens, US$, idle time and the 5-hour window, in real time.

Track spend in the terminal itself while the agent works.
Basic FREE

Cache Alarm

An alarm clock in the corner of the screen warns you when the idle session is about to cool the cache. You notice the pause before losing the discount.

The alert rings at 28 minutes of inactivity on Codex or 43 minutes on Claude Code.
Basic FREE

Mod Themes

Install one of seven themes in the Claude Code desktop app. Colored borders tell your messages, the agent's replies and the tools apart, giving a new look to the app you use all day.

The theme changes the look. The agent's work stays the same.
Pro

Task done.
We pop the confetti.

Finish Line Push alerts you with sound and animation when the agent finishes. Pick confetti, fireworks or a neon frame and go do something else while it works.

Local preview. Turn on sound if you want to hear the alert.

Piece of cake!task done · your turn to shine

Your next
setup starts here.

Install HarnessUp, open the panel and pick the signals that make sense for your day. No writing rules. No hunting for config.

help@harnessup.dev

Before the
first click.

Does customization change what the agent does?

Mod Themes only changes the look of the Claude Code desktop app. Pills, status and alerts help you follow the session; permission for an action still depends on your answer.

Do all the tools work with any harness?

Each tool has its place: Status Bar is for the Claude Code CLI; Mod Themes is for the Claude Code desktop app. Permission Push sends Windows notifications. Cache Alarm uses the Codex and Claude Code alert times described above.

What happens when I click this demo?

Only this page changes. The values, sessions and palettes are illustrative. Nothing on your computer is changed and no notification permission is requested.

Do I have to subscribe to start?

Info Pills, Permission Push, Status Bar, Cache Alarm and Mod Themes are on Basic FREE. Finish Line Push starts at Pro. Installation and the measurement layer are free, no login, and data stays on your machine.