Your API Versioning Strategy Won't Save You

TL;DR: Versioning protects consumers of your APIs. It does nothing for the third-party APIs you consume. When Stripe, Twilio, or any external provider silently changes a response schema, your versioning strategy is irrelevant. You need to monitor the actual response data, not trust that a 200 OK means everything is fine. You version your APIs. You follow semver. You have /v1/ and /v2/ endpoints and a deprecation policy. And you're still going to wake up to broken integrations. Versioning protects consumers of your APIs. It does nothing for the third-party APIs you consume. Most companies don't have the luxury of only using internal APIs they fully control. The rest of us are out here consuming whatever Stripe, Twilio, GitHub, and every other provider decide to serve us. We don't get a say. We just eat the slop and hope nothing changes. They all have their own versioning strategies, their own deprecation timelines, and their own definition of what counts as a "breaking change." Some of