Get a free coverage report showing untested error paths in your codebase. We use formal methods (TLA+) to find ALL possible failures—not AI guessing.
70% of production bugs are unhandled errors
async function processPayment(amount) {
return await stripe.charges.create({
amount
});
}
// ❌ No error handling
// ❌ Network timeout → crash
// ❌ Rate limit → crash
// ❌ Invalid amount → crash
// ❌ 15 more failure modesGet your free coverage report in 60 seconds
Connect your GitHub account securely. We only request read access to analyze your code.
Choose which repo to analyze. We'll scan your code for untested error paths.
View your coverage report online and download as PDF. See exactly what's missing.
Example: Tennis Finance App
Get detailed test specifications for all 1,984 paths, plus recommendations and priority ranking.
Formal methods, not AI guessing
We use TLA+ (formal methods used by AWS, Azure) to PROVE all error paths are found. Not AI hallucinations.
Analyze 1,000+ files in seconds. Deterministic analysis means no waiting for AI models to process.
167 verified templates for 32 npm packages. We know EXACTLY what errors Stripe, OpenAI, etc. can throw.
Used by developers at:
Get your free coverage report in 60 seconds. No credit card required.
✓ No credit card required ✓ 167 verified SDK templates ✓ Professional PDF export
Get a free coverage report showing untested error paths in your codebase. We use formal methods (TLA+) to find ALL possible failures—not AI guessing.
70% of production bugs are unhandled errors
async function processPayment(amount) {
return await stripe.charges.create({
amount
});
}
// ❌ No error handling
// ❌ Network timeout → crash
// ❌ Rate limit → crash
// ❌ Invalid amount → crash
// ❌ 15 more failure modesGet your free coverage report in 60 seconds
Connect your GitHub account securely. We only request read access to analyze your code.
Choose which repo to analyze. We'll scan your code for untested error paths.
View your coverage report online and download as PDF. See exactly what's missing.
Example: Tennis Finance App
Get detailed test specifications for all 1,984 paths, plus recommendations and priority ranking.
Formal methods, not AI guessing
We use TLA+ (formal methods used by AWS, Azure) to PROVE all error paths are found. Not AI hallucinations.
Analyze 1,000+ files in seconds. Deterministic analysis means no waiting for AI models to process.
167 verified templates for 32 npm packages. We know EXACTLY what errors Stripe, OpenAI, etc. can throw.
Used by developers at:
Get your free coverage report in 60 seconds. No credit card required.
✓ No credit card required ✓ 167 verified SDK templates ✓ Professional PDF export