Reach the Safe Zone. More than 99% Code Coverage, Automatically.
Zone 99 is the AI agent that autonomously writes unit tests for your legacy codebases. Connect your repo, let the AI analyze your logic, and watch your coverage hit 99%.
No credit card required • Works with GitHub & GitLab
Integrating seamlessly with your stack
Stop Wasting Engineering Hours
on Boilerplate Tests.
Zone 99 handles the tedious work so your team can focus on building features that matter.
Revive Legacy Code
Don't fear touching old code. Zone 99 maps dependencies and generates safety nets for code written years ago.
Context-Aware AI
Unlike standard linters, Zone 99 understands business logic. It writes meaningful tests, not just passing assertions.
Zero-Friction Integration
We run as a GitHub Action. Every PR is automatically scanned and topped up to 99% coverage before merge.
Smart Mocking
Automatic mock generation for external dependencies
Edge Case Detection
AI identifies boundary conditions and null scenarios
Lightning Fast
Generate tests in seconds, not hours
From 0 to 99 in Three Steps
Connect your Repository
Grant Zone 99 read-access to your target branch. We support GitHub, GitLab, and Bitbucket with just a few clicks.
Select your Framework
We support Jest, Mocha, PyTest, JUnit, and RSpec. Zone 99 automatically detects your project structure.
Review & Merge
Zone 99 opens a Pull Request with the generated test files. You simply review and merge. That's it!
Simple, Usage-Based Pricing
Start free and scale as your team grows. No hidden fees, no surprises.
Developer
Perfect for trying out Zone 99 on personal projects
- 1 Public Repository
- Node.js & Python only
- Community Support
- 50 Test Generations/mo
- Basic Coverage Reports
Team
For growing teams that need comprehensive coverage
- 5 Private Repositories
- All Languages Supported
- Priority Support
- Unlimited Test Generations
- Advanced Analytics
- Custom Test Templates
- CI/CD Integration
Enterprise
For organizations with advanced security needs
- Unlimited Repositories
- On-Premise Deployment
- SLA & Dedicated Account Manager
- Audit Logs & Compliance
- SSO & SAML
- Custom Integrations
- Training & Onboarding
All plans include a 14-day free trial. No credit card required to start.