{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://evosoft.ie/ailint/schema/provenance/v1",
  "title": "AILint Provenance Statement",
  "description": "Declarative schema for explicit AI provenance signaling.",
  "type": "object",
  "additionalProperties": false,

  "required": ["ai_involved", "role"],

  "properties": {
    "ai_involved": {
      "type": "boolean",
      "description": "Indicates whether AI systems contributed to the content."
    },

    "role": {
      "type": "string",
      "description": "Nature of AI involvement.",
      "enum": [
        "generated",
        "assisted",
        "edited",
        "summarized",
        "translated",
        "reviewed"
      ]
    },

    "confidence": {
      "type": "number",
      "minimum": 0,
      "maximum": 1,
      "description": "Optional self-reported confidence in the declaration."
    },

    "reference": {
      "type": "string",
      "description": "Optional reference ID linking to extended provenance metadata."
    },

    "tool": {
      "type": "object",
      "description": "Optional information about the AI tool used.",
      "additionalProperties": false,
      "properties": {
        "name": {
          "type": "string",
          "description": "Name of the AI system or tool."
        },
        "vendor": {
          "type": "string",
          "description": "Organization providing the AI system."
        },
        "version": {
          "type": "string",
          "description": "Tool or model version identifier."
        }
      }
    },

    "timestamp": {
      "type": "string",
      "format": "date-time",
      "description": "Optional ISO-8601 timestamp when AI contribution occurred."
    },

    "scope": {
      "type": "string",
      "description": "Optional scope of the provenance statement.",
      "enum": ["file", "block", "document", "repository"]
    }
  }
}