{
  "$schema": "https://json-schema.org/draft-07/schema#",
  "title": "PriceTrail pricing dataset (derived layer)",
  "type": "object",
  "definitions": {
    "PriceCard": {
      "type": "object",
      "required": [
        "id",
        "tool",
        "vendor",
        "tier",
        "price",
        "currency",
        "billing_cycle",
        "effective_date",
        "source_url",
        "snapshot_ref",
        "captured_at",
        "lang",
        "category"
      ],
      "properties": {
        "id": {
          "type": "string|number|null",
          "description": "id"
        },
        "tool": {
          "type": "string|number|null",
          "description": "tool"
        },
        "vendor": {
          "type": "string|number|null",
          "description": "vendor"
        },
        "tier": {
          "type": "string|number|null",
          "description": "tier"
        },
        "price": {
          "type": "string|number|null",
          "description": "price"
        },
        "currency": {
          "type": "string|number|null",
          "description": "currency"
        },
        "billing_cycle": {
          "type": "string|number|null",
          "description": "billing_cycle"
        },
        "effective_date": {
          "type": "string|number|null",
          "description": "effective_date"
        },
        "source_url": {
          "type": "string|number|null",
          "description": "source_url"
        },
        "snapshot_ref": {
          "type": "string|number|null",
          "description": "snapshot_ref"
        },
        "captured_at": {
          "type": "string|number|null",
          "description": "captured_at"
        },
        "lang": {
          "type": "string|number|null",
          "description": "lang"
        },
        "category": {
          "type": "string|number|null",
          "description": "category"
        }
      },
      "additionalProperties": true
    },
    "PriceChange": {
      "type": "object",
      "required": [
        "id",
        "tool",
        "change_type",
        "before",
        "after",
        "detected_at",
        "evidence_snapshot_before",
        "evidence_snapshot_after"
      ],
      "properties": {
        "id": {
          "type": "string|number|null",
          "description": "id"
        },
        "tool": {
          "type": "string|number|null",
          "description": "tool"
        },
        "change_type": {
          "type": "string|number|null",
          "description": "change_type"
        },
        "before": {
          "type": "string|number|null",
          "description": "before"
        },
        "after": {
          "type": "string|number|null",
          "description": "after"
        },
        "detected_at": {
          "type": "string|number|null",
          "description": "detected_at"
        },
        "evidence_snapshot_before": {
          "type": "string|number|null",
          "description": "evidence_snapshot_before"
        },
        "evidence_snapshot_after": {
          "type": "string|number|null",
          "description": "evidence_snapshot_after"
        }
      },
      "additionalProperties": true
    }
  }
}