How it looks like
You prompt. Claude writes the code. Your app is live. Automatically.
Your ideas...
... Created
Your Harness Companion
Imagine you're building a web app. You ask Claude Code to add a dark mode feature. Claude writes the code and needs somewhere to put it. Without automation, you'd have to:
- 1Manually create a branch for the feature
- 2Manually review and merge the AI's code
- 3Manually set up a test environment to preview
- 4Manually create a pull request when ready
- 5Manually tear down the environment after merging
- 6Manually delete old branches to keep things tidy
How to get started?
Create your repository
Copy the harness template into a repository of your own, and add two tokens so the automation can act on your behalf. The wizard walks you through both.
Open the wizard →02Run /setup
One command inside Claude Code. It asks what you're building, checks your tokens for real, provisions your environments if you deploy, and prints your live URLs.
Open the wizard →03Build apps like you never thought possible.
With your pipeline live and your companion by your side, every idea is one prompt away. Start a fresh chat, type /feature, and describe it.
Open the wizard →A new way to build software
Harness Engineering is an opinionated approach to building software. A single person, or a small team, directs AI agents through structured workflows called the harness. The harness ensures quality at speed, with minimal friction. Instead of writing every line of code by hand, you orchestrate intelligent agents that build, test, and deploy on your behalf.
- 1Speed is limited by how fast people can write code
- 2Scaling means hiring more engineers
- 3Context lives in people’s heads
- 4Quality and speed are always in tension
- Speed is limited by how fast you can review and iterate on ideas
- Scaling means compounding, not linear growth
- Context is encoded in the harness itself
- Quality is built into the workflow, and speed follows naturally
The bottleneck is no longer writing code. It is deciding what to build. Harness Engineering shifts your team from execution to judgment, which is the one thing humans still do better than machines.
Read more about Harness Engineering→Not another AI platform.
Cursor, Replit, Lovable, and Vercel are platforms you use. Harness Companion is infrastructure you own. Here is what that means in practice.
Everyone shares the same staging environment. Test data collides between features. Coordinate manually or hope for the best.
Every feature branch gets its own database, storage bucket, and preview URL. Automatically. Zero coordination.
/featureReady to build?
The wizard walks you through it, step by step. A few minutes from here to your own pipeline.
Get your companion →