Sovereign Assurance Boundary: Certificate-Bound Admission for Agentic Infrastructure

The paper introduces the Sovereign Assurance Boundary (SAB), a certificate-bound runtime admission layer designed to enhance security in agentic infrastructure by addressing the limitations of existing authorization mechanisms. SAB compiles agent proposals into typed execution contracts, which are validated against cryptographic evidence and policy versions, and issues a Sovereign Assurance Certificate upon successful admission. This architecture ensures that autonomous reasoning systems cannot directly mutate production resources, thereby providing a verifiable and revocable execution authority that is critical for practitioners managing high-stakes AI operations.