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Load test any OpenAPI spec without writing scripts

If your API is documented with OpenAPI (Swagger), you already have everything needed to design realistic load tests. Rampstorm imports your spec, maps endpoints, and lets you fire traffic from a visual test builder.

Why start from OpenAPI?

Hand-writing load test scripts duplicates work your API team already did in the spec. OpenAPI defines paths, methods, parameters, request bodies, and security schemes — exactly what a load generator needs. Import once and reuse across staging and production targets.

From spec to stress test

Upload or fetch your OpenAPI YAML/JSON, browse endpoints by tag, configure auth (Bearer, API keys, custom headers), and prefill a new load test from any operation. Try individual requests against your verified target before you ramp to thousands of RPS.

Safe by design

Rampstorm requires DNS or HTTP header verification before any traffic leaves an agent, and orchestrator-level rate guards cap RPS and duration on every run. Your spec might describe production — but traffic only flows to targets you prove you own.

Run your first load test in minutes

Free during closed beta. Verify your target, pick a ramp profile, and watch live metrics — no agents to install.

Start for free