Runtime
The deterministic execution engine. Every action request enters the Runtime as a structured intent and exits as either a policy-authorized execution or a governed denial. No middle ground. No fallback to permissive.
Every step is mandatory.
No step can be skipped. No outcome is produced without a binding Decision.
Runtime behavior is structural.
The Runtime enforces policy before the action occurs. Logging records what happened. The Runtime determines whether it is permitted to happen.
Same input plus same policy equals same outcome. Always. Determinism is a structural property of the execution model.
When the Runtime cannot evaluate policy, due to missing data, ambiguous input, or infrastructure failure, execution does not proceed.
External AI systems reach the Runtime through the MCP Gateway, the constitutional choke point for effect-bearing action.