{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://rodgui.github.io/ai-agent-governance-framework/schemas/audit-event.schema.json",
  "title": "AI Agent Audit Event",
  "description": "Envelope mínimo de evento auditável sem payload sensível, para correlação de identidade, versão, policy e tool action.",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schemaVersion",
    "eventId",
    "timestamp",
    "agentId",
    "agentVersion",
    "eventType",
    "actor",
    "correlationId",
    "outcome",
    "policyDecision",
    "dataClassifications",
    "redactionApplied",
    "evidenceRef"
  ],
  "properties": {
    "schemaVersion": {
      "const": "1.0"
    },
    "eventId": {
      "type": "string",
      "pattern": "^EVT-[A-Z0-9-]{3,100}$"
    },
    "timestamp": {
      "type": "string",
      "format": "date-time"
    },
    "agentId": {
      "type": "string",
      "pattern": "^[a-z0-9][a-z0-9._-]{2,63}$"
    },
    "agentVersion": {
      "type": "string",
      "pattern": "^[0-9]+\\.[0-9]+(?:\\.[0-9]+)?$"
    },
    "eventType": {
      "enum": [
        "session-start",
        "model-call",
        "retrieval",
        "tool-request",
        "tool-result",
        "approval",
        "policy-decision",
        "containment",
        "session-end"
      ]
    },
    "actor": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "type",
        "identityRef"
      ],
      "properties": {
        "type": {
          "enum": [
            "user",
            "workload",
            "agent",
            "service",
            "human-approver"
          ]
        },
        "identityRef": {
          "type": "string",
          "minLength": 3
        }
      }
    },
    "correlationId": {
      "type": "string",
      "minLength": 3
    },
    "outcome": {
      "enum": [
        "success",
        "denied",
        "failed",
        "partial",
        "cancelled"
      ]
    },
    "policyDecision": {
      "enum": [
        "allow",
        "allow-with-conditions",
        "deny",
        "not-evaluated"
      ]
    },
    "dataClassifications": {
      "type": "array",
      "uniqueItems": true,
      "items": {
        "enum": [
          "public",
          "internal",
          "confidential",
          "restricted",
          "regulated"
        ]
      }
    },
    "tool": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "catalogEntryId",
        "action",
        "stateChanging"
      ],
      "properties": {
        "catalogEntryId": {
          "type": "string",
          "pattern": "^TLR-[A-Z0-9-]{3,80}$"
        },
        "action": {
          "type": "string",
          "minLength": 1
        },
        "stateChanging": {
          "type": "boolean"
        },
        "approvalRef": {
          "type": "string",
          "minLength": 3
        }
      }
    },
    "redactionApplied": {
      "type": "boolean"
    },
    "evidenceRef": {
      "type": "string",
      "minLength": 3
    },
    "reasonCode": {
      "type": "string",
      "minLength": 2
    }
  }
}