{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/geronimo-iia/agent-foundation/schemas/taint-label.json",
  "title": "Taint Label",
  "description": "Schema for taint tracking labels used in information flow tracking",
  "type": "object",
  "required": ["kind"],
  "properties": {
    "kind": {
      "type": "string",
      "enum": ["UserInput", "ExternalFetch", "LlmGenerated", "Secret", "PII"],
      "description": "The category of taint"
    },
    "source": {
      "type": "string",
      "description": "Optional unique identifier for the data origin (e.g., 'user:alice', 'url:https://...', 'agent:coder')"
    }
  },
  "additionalProperties": false,
  "examples": [
    {
      "kind": "UserInput",
      "source": "user:alice"
    },
    {
      "kind": "ExternalFetch",
      "source": "url:https://news.com"
    },
    {
      "kind": "Secret"
    }
  ]
}