Systems and methods enforce non-bypassable, fail-closed permit-before-
commit control of external-effect requests at an effect boundary between an execution substrate and one or more external interfaces. An interceptor captures each request, deterministically canonicalizes it, computes an action digest, and obtains a
machine-verifiable permit
receipt bound to a policy digest and epoch identifier with a time-bounded validity. Prior to commitment, the interceptor verifies
receipt authenticity,
authorization by digest match and / or cryptographic commitment
verification, epoch-compatibility, and
revocation status using signed
revocation data and / or transparency-log proofs subject to policy-defined recency, including in intermittently connected environments, and may enforce scope and permit-
provenance constraints. If required
verification evidence is missing, stale, conflicting, or indeterminate, the
external effect is denied. Optional embodiments use trusted execution boundaries, capability tokens for dual
enforcement, and
machine-verifiable decision, audit, and denial receipts.