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Canonical concepts

Agent Reliability Engineering Concepts

A shared vocabulary for engineering autonomous systems whose behavior must remain measurable, bounded, observable, recoverable, and accountable.

AI Agent Reliability

The measurable degree to which an agent behaves as intended, stays within authority, and recovers safely.

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Reliability Surface

The behavioral dimensions and engineering controls that determine whether an agent can be trusted in production.

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Reliability Debt

The accumulated risk created when capability, complexity, or authority grows faster than reliability engineering.

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Progressive Autonomy

Authority that expands with demonstrated reliability and contracts when reliability deteriorates.

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Agent Authority

The explicit, scoped set of actions an agent may take and the data those actions may touch.

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Agent Governance

The organizational structures, technical policies, and accountability mechanisms that govern agent behavior.

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Agent Reliability Controls

The concrete engineering mechanisms that implement and protect the Reliability Surface.

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How the concepts fit together

The Reliability Surface describes the behavioral properties and engineering controls a production agent needs. Reliability Debt appears when capability, complexity, or authority grows faster than those controls. Progressive Autonomy connects the two by requiring evidence before authority expands and by contracting authority when reliability deteriorates. Together, these concepts give teams a practical vocabulary for designing, evaluating, operating, and governing autonomous AI systems.