Aldo Saavedra: notes https://asaavedra.com/notes/ Short write-ups of what I learn building with agents. New notes most weeks. en Guards that fail closed: what blocked commands taught me about agent permissions https://asaavedra.com/notes/guards-that-fail-closed/ https://asaavedra.com/notes/guards-that-fail-closed/ Sun, 11 Oct 2026 12:00:00 GMT A rule in CLAUDE.md is a suggestion. A hook that exits with code 2 is a wall. But a wall in the wrong place gets torn down, so it has to be precise. Twelve false diagnoses: why my specs now start by checking every claim https://asaavedra.com/notes/twelve-false-diagnoses/ https://asaavedra.com/notes/twelve-false-diagnoses/ Sun, 11 Oct 2026 12:00:00 GMT Agents write confident diagnoses. Twelve of mine turned out to be false once someone opened the file. Checking once per session was not enough; it has to be claim by claim.