Six hard-won lessons on putting guard checks in front of every agent tool call
Individual-Shower973 · reddit · 2026-10-03
Distilled from 22 replies to a post on hard checks before every agent tool call: name the rule, never the number; gating by tool name leaks if the agent has a shell (use a choke point holding credentials); replace dangerous arguments like URLs with opaque handles instead of validating them; check args after resolution, not as typed; verify against the source of truth, not the agent's memory; and give reservations an idempotency key — unsettled holds get charged worst-case. Core theme: a pattern check is a guard rail, not a sandbox. Author also ships Paveo, honestly audited against these lessons.
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