Shipping Carrier Detector (from Tracking Number Format)

{
  "type": "object",
  "required": [
    "tracking_number"
  ],
  "properties": {
    "tracking_number": {
      "type": "string",
      "description": "The parcel tracking number, as printed on the label or receipt."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "properties": {
    "format": {
      "type": "object",
      "properties": {
        "length": {
          "type": "number",
          "description": "Number of characters."
        },
        "is_alpha": {
          "type": "boolean",
          "description": "Whether it is letters only."
        },
        "is_numeric": {
          "type": "boolean",
          "description": "Whether it is digits only."
        },
        "is_alphanumeric": {
          "type": "boolean",
          "description": "Whether it is letters and digits only."
        }
      },
      "description": "A summary of the number's format."
    },
    "best_match": {
      "type": "object",
      "properties": {
        "code": {
          "type": "string",
          "description": "Short lowercase carrier code."
        },
        "name": {
          "type": "string",
          "description": "Carrier name."
        },
        "confidence": {
          "type": "string",
          "description": "Confidence label for the match."
        }
      },
      "description": "The most likely carrier."
    },
    "carrier_count": {
      "type": "number",
      "description": "How many carriers matched."
    },
    "original_input": {
      "type": "string",
      "description": "The input as it was sent."
    },
    "tracking_number": {
      "type": "string",
      "description": "The tracking number that was checked."
    },
    "detected_carriers": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "code": {
            "type": "string",
            "description": "Short lowercase carrier code."
          },
          "name": {
            "type": "string",
            "description": "Carrier name."
          },
          "confidence": {
            "type": "string",
            "description": "Confidence label for the match."
          }
        }
      },
      "description": "Every carrier whose number format matches."
    }
  },
  "description": "The carrier detection result, as returned after shaping."
}