drift-node-demo

the CLI sandboxes your service and serves mocks via Unix socket We run this in CI on every PR. Also been using it as a test harness for AI coding agents, they can make changes, run `tusk run`, and get immediate feedback without needing live dependencies. Source: https://github.com/Use-Tusk/tusk-drift-cli Demo: https://github.com/Use-Tusk/drift-node-demo Happy to answer questions!

and outbound calls like database queries, HTTP requests, and auth token generation. When Drift is triggered, it replays the inbound API call while intercepting outbound requests and serving them from recorded data. Drift’s tests are therefore idempotent, side-effect free, and fast (typically <100 ms per test). Think of it as a unit test but for your API. Our Cloud platform does the following automatically: - Updates the test suite of recorded traces to maintain freshness - Matches relevant Drift tests to your PR’s changes when running tests in CI - Surfaces unintended deviations, does root cause analysis, and suggests code fixes We’re excited to see this use case finally unlocked. The release of Claude Sonnet 4.5 and similar coding models have made it possible to go from failing test to root cause reliably. Also, the ability to do accurate test matching and deviation classification means running a tool like this in CI no longer contributes to poor DevEx (imagine the time otherwise spent reviewing test results). Limitations: - You can specify PII redaction rules but there is no default mode for this at the moment. I recommend first enabling Drift on dev/staging, adding transforms (https://docs.usetusk.ai/api-tests/pii-redaction/basic-concep...), and monitoring for a week before enabling on prod. - Expect a 1-2% throughput overhead. Transforms result in a 1.0% increase in tail latency when a small number of transforms are registered; its impact scales linearly with the number of transforms registered. - Currently only supports Node backends. Python SDK is coming next. - Instrumentation limited to the following packages (more to come): https://github.com/Use-Tusk/drift-node-sdk?tab=readme-ov-fil... Let me know if you have questions or feedback. Demo repo: https://github.com/Use-Tusk/drift-node-demo