Policy Engine
Deterministic evaluation of policy, context, and authority with no hidden state.
Why it exists
The policy engine turns written policy into executable rules with deterministic outcomes. It removes interpretation drift and produces a clear decision surface for ALPHA.
Explicit inputs
Every decision is derived from declared policy, structured context, and scoped authority.
Reproducible outputs
Evaluations are replayable and stable across time and environments.
Policy versioning
Each decision is bound to a versioned policy hash for later audit.
Clear failure modes
When policy is missing or ambiguous, the engine fails closed.
Decision inputs
Policy definitions
Request intent
Actor authority
Environment state
The Doctrinal Requirement
Policy evaluation is only meaningful when the evaluator is mechanically isolated from the executor.
Learn how governed systems differ →