PM interview concept · Technical

API contracts

An API contract is the explicit agreement between two systems on what data flows, what errors mean, and what's stable vs experimental.

Why interviewers test it

PM-T candidates must read and critique a contract without pretending to write it. Interviewers test whether you can spot the missing error case or the breaking change.

Practice this concept in PrepOS

Open the practice simulator, select "API contracts" under your weakest concepts, and the adaptive queue will surface reps that drill it first.

Practice api contracts