API Testing & QA
Test every edge case without touching production
Create realistic API scenarios to test your application against any response, error, or edge case imaginable. Ship with confidence knowing your app handles everything.
The Challenge with Traditional API Testing
Testing API integrations is difficult. External APIs have rate limits, sandbox environments are often incomplete, and reproducing edge cases requires complex setup.
- External API sandboxes don't cover all edge cases
- Rate limits slow down test suites
- Difficult to test error handling and timeouts
- Inconsistent test results due to network issues
- No way to test specific response scenarios
Stage Makes API Testing Simple
With Stage, you define exactly what your API returns for each test case. No network dependencies, no rate limits, no flaky tests.
Scenario-Based Testing
Define specific scenarios for each test case.
Deterministic Results
Every test run produces identical results.
Error Injection
Easily simulate 500 errors and timeouts.
Parallel Execution
Run tests in parallel without rate limits.
How It Works
Create Test Scenarios
Define scenarios for each test case.
Configure Your Tests
Point your test suite at Stage.
Run with Confidence
Execute tests with predictable results.
Example: Testing Payment Processing
const scenario = await stage.createScenario({
name: 'payment-declined',
rules: [{
match: { path: '/v1/charges' },
response: { status: 402, body: { error: 'card_declined' } }
}]
});"We reduced our test flakiness from 15% to nearly zero after switching to Stage."
Ready to get started?
Start creating scenarios in minutes. No credit card required.