Agentic AI Reference Architecture

Observability & Evaluation · Data store

Explanation History Store

Data storeObservability & EvaluationObservability & Evaluationarc:ExplanationHistoryStore

A store of time-stamped explanation versions per decision, recording how assessment and reasoning evolved as information changed.

Responsibility. Persists time-stamped versions of decision explanations.

Also known as: Time-stamped explanation history

is read byis written byExplanation Presenter: is read byExplanation PresenterExplanation Refresher: is written byExplanation Refresher
Direct neighbourhood (hover for relationship types)

Relationships

is read by dependency

is written by dependency

Classification

Quality attributes
Transparency and accountability (NIST AI RMF: accountable and transparent)
Risks mitigated
Loss of reasoning evolution context

Sources

  1. Ch10.5: T. Nguyen, "Human-over-the-Loop," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 10.5. ISBN: 9798244538229.