What question did this study set out to answer?

To define the Runtime Governance Continuity layer for the Agent Trust Fabric Open Protocol Standard.

May 18, 2026Open Access

RFC-ATF-2: Agent Trust Fabric — Runtime Governance Continuity Protocol

Key Points

To define the Runtime Governance Continuity layer for the Agent Trust Fabric Open Protocol Standard.
Introduced the Continuity Eligibility Score (CES) formula.
Defined Runtime Continuity Records (RCR) and various protocols including the Reauthorization Challenge (RC).
Established new invariants RGC-INV-001–008 for compliance.
Introduced the ATF-RGC-Compliant designation for systems meeting new standards.
Updated to include RFC-ATF-2.md for standardized documentation alongside PDF.

Abstract

RFC-ATF-2 is the second specification in the Agent Trust Fabric (ATF) Open Protocol Standard. It extends RFC-ATF-1 (DOI: 10.5281/zenodo.20155016) by defining the Runtime Governance Continuity (RGC) layer: the Continuity Eligibility Score (CES) formula, Runtime Continuity Records (RCR), Authority Fragmentation Guard (AFG), and Reauthorization Challenge (RC) protocol. Eight new invariants: RGC-INV-001–008. ATF-RGC-Compliant designation. v1.1 update: Adds RFC-ATF-2.md canonical markdown source alongside the PDF.

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