Write the OpenAPI file first, then let the compiler and a short test catch every place the agent drifts from it

Fri, 30 Oct 2026 07:07:00 +0000

The ticket says the invoice response has a totalMinor field. The backend developer’s agent returns total, because that read more naturally to it. The frontend developer’s agent calls invoice.totalMinor, divides by 100 and renders NaN. Both pull requests are green. Each side’s tests were written by the side that made the mistake, so each side agreed with itself.

Api-Design on Tokenise

Write the OpenAPI file first, then let the compiler and a short test catch every place the agent drifts from it