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Data lineage and causal chain auditing

Provides comprehensive audit trails and data lineage tracking for compliance.

Key responsibilities

  • Immutable audit logs: Tamper-proof record of all agent activities
  • Data lineage tracking: Complete provenance chain for data transformations using content-based fingerprinting, transformation logging, and cross-agent correlation
  • PII minimization: Privacy-aware logging with field-level redaction
  • SIEM integration: Structured export to enterprise security monitoring
  • Human escalation: Policy-driven approval workflows for high-risk operations

Data lineage mechanisms

  • Content fingerprinting: SHA-256 hashes of data inputs and outputs for tracking transformations
  • Transformation logging: Detailed records of agent operations, tools used, and data modifications
  • Cross-agent correlation: Tracking data flow between agents using session identifiers and correlation tokens
  • Temporal provenance: Time-ordered chains showing complete data journey from source to destination

Audit event schema

{
  "timestamp": "2025-08-28T14:30:00Z",
  "event_type": "tool_access",
  "agent_id": "financial_analyst_001",
  "tool_name": "database_query",
  "policy_decision": true,
  "policy_reason": "Agent authorized for read access during business hours",
  "data_fingerprint": "sha256:abc123...",
  "lineage_metadata": {
    "input_fingerprints": ["sha256:def456..."],
    "transformation_type": "aggregation",
    "correlation_id": "session_789",
    "behavioral_signals": ["scope_violation"],
    "risk_dimensions": {"data_exfiltration": 0.92}
  },
  "human_approval_required": false,
  "audit_level": "standard"
}