PDR in Production: Empirical Evidence for Cross-Session Behavioral Reliability Scoring in Autonomous AI Agents

This paper presents the first empirical validation of the Probabilistic Delegation Reliability (PDR) framework using production behavioral data and independent implementation testing from two multi-agent deployments. Version 2.4 adds Section 7.6.3 documenting independent schema convergence across three teams: AEOESS ToolCallResult (Tima Pidlisnyi, direct correspondence March 30 2026) independently uses reputation.mu/sigma Bayesian parameters matching the AEOESS trust manager and NexusGuard implementations, and introduces HLC-gap-based session boundary detection as a deployable implementation of PDR temporal session concepts. The fidelityAttestation field in the schema provides tamper-evident Hold/Bend/Break scores consumable by the §8.10 substrate-swap experiment protocol.