Gate Prompt Changes With a 40-Case Sweep: A Free-Tier Regression Harness for Solo Founders
A prompt edit is a deploy. Treat it like one: run the new prompt against a fixed case file three times per case, compare pass rates, and block the release when the rate drops. The harness below is about 120 lines of plain Python, needs no framework, and is cheap enough to run on a free model tier b…
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- 2026-11-07 18:48 · DEV Community — AI
Gate Prompt Changes With a 40-Case Sweep: A Free-Tier Regression Harness for Solo Founders