🧪AWS Emulator Runs Locally on 127.0.0.1:9297 With No Service Fee

Test your AWS code without touching a real AWS bill

Tired of paying AWS just to run your test suite? A new local AWS emulator serves the AWS API endpoint on your own machine, so your code can talk to something that looks like AWS without ever calling it. There's no additional service fee, no GUI, and it installs on Linux, Windows, and macOS. If you're wiring up CI or running integration tests against S3, DynamoDB, or Lambda, this is the thing that saves you from flaky network calls and surprise charges. It can also run in embedded mode, which means you can ship it inside your own tool. The catch: you need AWS CLI 2.35.0 or later, and it's built for AI coding agents as much as humans. The emulator listens over HTTPS on 127.0.0.1:9297 and uses a self-signed certificate, so you'll need to trust that cert in your test setup. Telemetry is on by default, but it's collected with strict data minimization, never includes personal data, and isn't shared with third parties. You can turn it off with a CLI flag, an environment variable, a config file, or the embedded configuration API. Worth watching: the telemetry is used to track fidelity gaps in the repo's issues directory, so the emulator should get more accurate over time.