Spin up realistic mock API endpoints in 12 seconds. Test AI agents safely, mock third-party services, and stop melting your OpenAI budget on every CI run.
Describe the shape in plain English. Get a working endpoint with realistic, varied responses. No JSON schema gymnastics.
Give your LLM agent a full fake universe of APIs. Let it call, fail, retry, hallucinate — without breaking anything real.
Pre-built fakes for Stripe, Twilio, Slack, OpenAI, and 40+ services. Latency simulation and rate-limit chaos included.
Test how your agent handles 500s, timeouts, malformed JSON, and rate limits. Bake resilience in from day one.
Return adversarial payloads to probe agent robustness. Catch jailbreaks and unsafe behavior in CI, not production.
Stateful endpoints that remember. POST a user, GET it back. Run full integration flows without spinning up a real DB.
"Give me a fake CRM with 500 contacts." "Mock a flaky payments API." Plain English in, working endpoint out.
Swap one base URL. We give you a dedicated subdomain. Latency, errors, and edge cases — all tunable from a dashboard.
Snapshot the fixture. Replay it in CI. Catch regressions before they cost you credits — or customers.
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