Your agent has delete_user()? Tool access is easy to check, runtime authorization is the hard part

BaraSlim · reddit · 2026-09-29

The author argues that checking which tools an agent can reach is easy—runtime authorization is the real challenge. A production authorization decision may need agent identity, tool identity, target resource and environment, current policy, execution context, budget, and approval state. The tool list answers what the agent can reach; the runtime decision answers what it can actually execute now—a fundamentally different architecture from static allowlists. Non-deterministic agents in production affect finances and reputation, and auditors don't care how the agent arrived at a bad decision; you should also monitor parameters, session state, budget limits, and infinite loops at execution time.

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