Agent Transparency Tool offers a comprehensive framework for instrumenting AI agents with transparency features. It provides logging interfaces to record state transitions and decisions, modules to compute key transparency metrics (e.g., confidence scores, decision lineage), and visualization dashboards to explore agent behavior over time. By integrating seamlessly with popular agent frameworks, it generates structured transparency logs, supports export to JSON or CSV formats, and includes utilities to plot transparency curves for audit and performance analysis. This toolkit empowers teams to identify biases, debug workflows, and demonstrate responsible AI practices.