Posts tagged API Versioning — AI × software engineering, made practical.
This lesson explains why editing an LLM tool schema's wording is a breaking API change that tests, type checks, and code review won't catch, and how to version, review, and snapshot-test schemas the way you would any service contract.
A planner prompt change that looked like a two-line efficiency tweak quietly broke every downstream executor — and revealed why plans need the same versioning discipline as any API.