Stop Prompting — Greg Pstrucha, Sentry

This post contributes to agent harness engineering by arguing against re-prompting AI coding agents and advocating for codifying rules through linters, strict types, and policies. It highlights that agents lack persistent memory, leading to recurring errors. The talk introduces the concept of mining transcripts and PR reviews to derive these rules, providing examples from Sentry where custom lint rules keep APIs in sync with OpenAPI schemas and ensure agent skills remain accurate. It also discusses the use of a "Grumpy Engineer" review loop for qualitative judgment and warns against agents gaming metrics like test coverage.