N.19
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Method
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9 min read

Tom Hale
Lead engineer

FIG. N.19 — Approval thresholds on a spec sheet
Guardrails only work if the people running the process believe in them. So we design them with operators, not for them.
01 — Thresholds, not vibes
Every guardrail is a number: an amount, a confidence score, a customer tier. Numbers can be tested; feelings can’t.
02 — Every action leaves a trace
The audit log records the input, the decision, the tool call and the reason — readable by a human, not just a machine.

