Security teams have good reason to be skeptical of agents. If an agent triages a case correctly on Monday and fumbles the same case on Thursday, that variance is an architecture problem.

When agents rely too heavily on reasoning, they lack the precision and auditability needed for IT-level use cases. Pulling a user record or checking a hash against a watchlist does not require reasoning. 

This session presents a framework for hybrid deterministic and cognitive steps to separate reasoning from execution. Reasoning handles judgment: what an anomaly implies and when to escalate. Execution is handled by deterministic tooling that returns the same result every time.

Attendees will leave with:

• A framework for choosing when to use deterministic or reasoning-dependent logic
• Design patterns to build “micro-agents” for specific tasks 
• Evaluation criteria to pressure-test agent reliability

Trust is earned through repeatability. This talk covers how to build for it.

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