Ask HN:Multi-microservices e2e tests solution

We're building a tool that generates E2E tests for multi microservices from Swagger specs and business logic descriptions — no traffic recording setup required. Fake data flows through all real services in your testing environment and outcomes are validated against user-confirmed expected results.

Before we launch, I'm trying to understand how teams actually solve this today.Also, a few questions for anyone dealing with this:

1. How many microservices does your team run in production?

2. Do you have true cross-service E2E tests, or mostly mocked integration tests?

3. If a tool could generate these tests from your Swagger + a plain-language description of your business flow, would that be useful enough to try?

Happy to share more about what we're building with anyone interested.