Token Harness

For Claude Code and Codex

Less overhead.
More room to code.

Save tokens. Get more from your Claude Code and Codex subscriptions. Make your usage go further across 5-hour sessions and weekly allowances, depending on your plan.

Download desktop app View on GitHub
Token Harness Home showing local setup status and separate measured and estimated results
Example dashboard. Results depend on your setup and usage.
Token Harness Methods view with setup options for compatible tools

Methods. Your optimizers, together in one place.

Your workflow.
With less in the way.

Control your optimizers from one place, then inspect the evidence behind each result.

Shorter tool output

Use RTK and HarnessTrim on compatible setups to reduce noisy command output.

More deliberate model use

Apply native routing guidance to bounded work. Your main agent stays in control.

Results you can inspect

Measured output, estimates, and current allowance each keep their own place.

See the plan before
anything changes.

Token Harness reviews a compatible setup with you, so the next step stays clear and deliberate.

Choose your project

Pick a project and connect the Claude Code or Codex installation you already use.

Review and approve

Preview a compatible setup and approve it when you’re ready. Opening the app changes nothing.

Keep coding

Use your coding agent as usual. Installed native hooks can keep working after you close the app.

Read the project documentation

Get Token Harness.

Native desktop packages for Windows, macOS, and Linux. Prefer a terminal? The CLI is there too.

Downloads are hosted on GitHub Releases and included in the same GitHub download counts.

Windows x64 setup macOS Apple Silicon DMG macOS Intel DMG Linux x64 DEB

Windows packages are unsigned. macOS packages are not notarized.

Browse latest release

CLI alternative

npm install --global token-harness@latest
Available on npm

The person behind the project

Built by giuliastro.

AI & token saving expert.

I build practical tools that help people get more from AI. Token Harness brings that work to your coding workflow: less avoidable token usage, clearer controls, and results you can inspect.

Get in touch Find me on GitHub Connect on X