Audit Logging
definition
Audit logging creates a tamper-resistant record of every action an agent takes — tool calls, file modifications, API requests, data access, and decision points — providing the forensic trail needed for security investigations, compliance audits, and post-incident analysis. Unlike standard application logging, agent audit logs must capture the full reasoning context: not just what the agent did, but what it was thinking, what information it had access to, and what triggered each decision.
Audit logging creates a tamper-resistant record of every action an agent takes — tool calls, file modifications, API requests, data access, and decision points — providing the forensic trail needed for security investigations, compliance audits, and post-incident analysis. Unlike standard application logging, agent audit logs must capture the full reasoning context: not just what the agent did, but what it was thinking, what information it had access to, and what triggered each decision. This is especially important because agent behavior is non-deterministic — you can't reproduce an incident by simply re-running the same input, so the audit log is your only reliable source of truth for understanding what happened. Comprehensive audit logging is a prerequisite for enterprise adoption of agentic coding tools because organizations need provable accountability for AI-initiated changes. This concept connects to trace analysis for the debugging use of logged data, observability platforms for the infrastructure that stores and queries logs, compliance for the regulatory requirements that mandate audit trails, and data exfiltration for the threat that audit logs help detect.