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Field note 45 · Governance & guardians

Guardian Agents Need Separation of Duties

One guardian should not observe, judge, approve, execute, and erase the evidence for the same event.

Editorial illustration for Guardian Agents Need Separation of Duties

Observation, policy decision, intervention, and evidence administration should be separable and independently auditable.

Why this question matters

Autonomous monitoring creates its own concentration of power. A guardian with universal visibility and blocking authority can protect the system, but compromise or bias turns it into a privileged control point.

Separation of duties can remain automated. One component can compute risk features, another can apply policy, and a narrowly scoped actuator can pause the relevant task. High-impact or ambiguous cases can require human approval without slowing routine low-risk decisions.

Signals worth observing

  • One agent can modify policy, suppress alerts, and approve execution.
  • Interventions leave no independent evidence trail.
  • Guardian access exceeds the systems and data it monitors.

Practical control direction

  1. Use distinct identities and credentials for each guardian role.
  2. Write evidence to an append-only independent store.
  3. Require dual control for irreversible or organization-wide intervention.
AgentCollusion lensA trustworthy oversight layer applies the same relationship analysis to its own components.

Sources and further reading

Next field note: When Should a Guardian Agent Intervene?