AI agents write the code.
Nothing is done until they prove it.
Every AI coding agent will tell you “done.” NoMoreHappyPath doesn’t believe it. One agent builds, an agent from the other AI vendor reviews by actually running the work, and a task only turns green when the evidence is attached.
Free and open source (Apache 2.0). Runs on your own machine with your own AI accounts.
The happy path is the demo. The rest ships broken.
“Happy path” is the case where everything goes right. It’s what AI agents test, and it’s what they show you. An agent that wrote the code and then grades its own tests will pass itself almost every time.
So you end up being QA for your own AI, rerunning everything before you trust it. That wipes out most of what the AI saved you, and solo builders and small teams don’t have a second engineer to do it for them.
Three rules the agents can’t talk their way around
Cross-vendor review
The agent that writes the code never judges it. The reviewer comes from the competing AI company, runs the code itself, and can fail it. It has no reason to agree.
Evidence-gated status
A task can’t become “done” because an agent said so. Every step needs proof attached: tests run, failure cases tried, the real screen checked.
You speak product, not code
You say what you want in plain language. You get back “ready for your test” with a checklist you can follow. Accepting the work stays your decision.
What you need, honestly
The platform is free. The AI agents it runs are not: they use your own accounts, and a serious build costs real money on them.
| You need | Why | Cost |
|---|---|---|
| macOS 13+ or Linux | Tested on Ubuntu 24.04. Python 3.9+. Windows isn’t supported. | Free |
| Codex CLI | The agent that builds. | Your OpenAI plan |
| Claude Code | The reviewer and the process watcher. | Your Anthropic plan |
| OpenAI API key | Lets you ask questions about your project. | Pay per use |
You can start with one agent, but the cross-vendor review needs both.
Two commands
git clone https://github.com/nomorehappypath/nomorehappypath.git cd nomorehappypath && bash install.sh
The installer checks everything above and tells you plainly what’s missing. Then open Mission Control, point it at a project folder, and give your first direction. Everything runs on your machine, and your code never goes to our servers.
It had to pass its own reviews
NoMoreHappyPath is built under its own rules: every change goes through a reviewer from the other vendor, and plenty of them failed before they shipped. It never claims your code is bug-free. It shows you the evidence for what was checked.