Digital Twins for Devs & AI Agents - Record, Replay & Catch Regressions | Keploy
Give your developers — and your AI agents — a digital twin of your live environment. Keploy records real traffic from your live services (no production access, nothing to spin up) and replays it as a faithful twin, so you can continuously verify behavior and catch regressions before they ship.
In this demo: record a live service, turn that traffic into integration tests and mocks automatically, replay everything against digital-twin sandboxes, and wire it into CI for continuous verification.
🔗 Try Keploy (open source): https://github.com/keploy/keploy
🌐 Website: https://keploy.io
📚 Docs: https://keploy.io/docs
💬 Community: https://keploy.io/slack
⭐ Keploy is open source — if it's useful, a GitHub star helps a lot.
— What's inside —
0:00 The problem: spinning up every service to test
0:19 The demo setup: 3 microservices
0:32 Recording real traffic on the dashboard
1:01 Generating test cases from a Postman run
1:36 Inside a test: the digital twin sandbox
1:58 Captured DB & queue calls (MySQL, SQS)
2:14 Editing sandbox data & handling noisy fields
2:34 Running tests in CI — no environment needed
3:01 Deterministic runs: frozen time & secrets
3:13 Keploy AI: generated suites & coverage
3:39 API-flow suites with auto-assertions
4:11 Cross-endpoint assertions & sharing
4:32 Run anywhere + why it matters
Record & replay traffic from your live environment — not production, nothing to set up
A digital twin of every dependency (DB, queues, downstream services) for developers and AI agents
Continuous verification: replay the twin in CI on every change
Automatic regression detection, with noisy-field handling so tests don't go flaky
Auto-generated mocks and integration tests, straight from real traffic
Keploy AI: auto-generated, auto-variabilized test suites with assertions written for you
Real, per-method API coverage; run in any pipeline, as load or sandbox tests
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