Don't let a launch day outage kill your startup momentum
Find critical API bottlenecks before you launch. AI-powered load testing that tells you exactly where your MVP will break, why it breaks, and what to fix — in under 5 minutes.
5 free test runs per month • No credit card required
See how your API behaves under realistic traffic
Experience realistic load scenarios instantly. No signup required.
Demo uses JSONPlaceholder by default. Enter any public GET endpoint.
Demo limit: 20 seconds max
The demo uses simplified scenarios. Full tests use AI-generated traffic patterns that mimic real user behavior and production usage.
Full reports include breaking point detection, traffic headroom, bottleneck analysis, and fix recommendations.
Want to test your own APIs? Create a free account →
What you need to know
before Product Hunt
Launching on Product Hunt, Hacker News, or TechCrunch? Our AI simulates realistic traffic spikes and tells you exactly what will break, at what traffic level, and how to fix it before you go live.
Based on real-world launch scenarios from hundreds of startups.
Test with 10x your expected signups to find your safety margin
Database connections? CPU? Memory? Know before users find out
Prepare for viral growth without panic scaling
Low-hanging fruit optimizations before launch
Four scenarios every startup should test before launch
We automatically run four critical tests that simulate real-world launch conditions. Each reveals different failure modes that could crash your launch.
Baseline Check
Verify basic functionality works under light load (catches obvious bugs)
Expected Traffic Test
Ramps to your estimated launch day numbers — can you handle it?
Product Hunt Spike
Sudden traffic burst when you hit #1 — does autoscaling kick in fast enough?
Worst-Case Chaos
Random failures and latency spikes — does your API recover gracefully?
Get launch-ready in 3 steps
Upload your OpenAPI spec
No scripting required. AI analyzes your API and generates realistic user flows automatically.
Run launch day simulations
We test expected traffic, spike scenarios, and worst-case chaos. Takes 5 minutes, finds critical issues.
Fix issues before launch
Get specific recommendations: increase connection pools, add indexes, enable caching. Launch with confidence.
Perfect for bootstrapped startups
5 free test runs per month. Pay-as-you-go after that. No subscriptions, no credit card required to start.