Dear_Cicada1806

Fair enough: signature, JWT, parsing, you'll catch those locally easy, and if you have e2e tests + canaries is solid setup. What tests and canaries don't cover is state drift in production. A canary tells you the webhook works right now for a synthetic customer. It doesn't tell you which of your real customers are already wrong: the ones cancelled or refunded by hand in the dashboard when you don't subscribe to that event, the events lost while the endpoint was down past Stripe's \~3 days of retries, or the rows that went bad before you fixed the bug, which fixing the handler doesn't repair. That's the gap - comparing what Stripe says with what your table says, customer by customer. If your setup already makes that impossible, you genuinely don't need it. The service is mostly for founders building on lovable and similar tools, who often don't know E2E tests or canaries exist, let alone set them up