{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://cortex-agent.local/schemas/activity-source-health.schema.json",
  "title": "Cortex Agent Activity Source Health",
  "type": "object",
  "required": ["schema_version", "source", "status", "checked_at", "last_success_at", "message"],
  "properties": {
    "schema_version": { "const": 1 },
    "source": { "type": "string", "minLength": 1 },
    "status": { "enum": ["healthy", "unavailable", "failed", "stale", "excluded", "unknown"] },
    "checked_at": { "type": "string", "format": "date-time" },
    "last_success_at": { "type": ["string", "null"], "format": "date-time" },
    "message": { "type": ["string", "null"] }
  },
  "additionalProperties": false
}