Because I built something for this exact problem and want to know if I'm solving it the right way.

Spectra observes real request/response traffic and generates a behavioral spec from it — so you can see where implementation has diverged from contract before releases break consumers.

Free CLI: https://github.com/rmalik1-hash/spectra_windows_public

But more curious about how people handle this today without a dedicated tool. What does your current process look like?