ToolAssay

Compare package sizes by price per 100 g, 100 ml or per item across mixed units,

Compare package sizes by price per 100 g, 100 ml or per item across mixed units, ranked with savings.

Answeringour last check, 2026-10-21
1 of 1checks answered this week
864 msmedian answer time
$0.02listed price per call
$0.02price it asked us

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

GET https://shipping-calc.x402tookit.com/unit-price

CategoryMarket data
Provider hostshipping-calc.x402tookit.com
Networkseip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
Payment schemesexact
Self-reported calls, 30 days1 from 1 payers (the provider's figure, not ours)

Our checks, last 30 days

DayResultHTTPAskedTime
2026-10-21 valid payment request 402$0.02 864 ms

Example input (from the provider)

{
  "method": "GET",
  "queryParams": {
    "items": "[{\"name\":\"Small\",\"price\":4,\"amount\":16,\"unit\":\"oz\"},{\"name\":\"Large\",\"price\":3.8,\"amount\":1,\"unit\":\"lb\"},{\"name\":\"Bulk\",\"price\":7,\"amount\":500,\"unit\":\"g\"}]"
  },
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "items": {
              "description": "JSON array of 2 to 20 objects like {\"name\":\"A\",\"price\":3.99,\"amount\":16,\"unit\":\"oz\"}; units g kg oz lb ml l floz pt qt gal ct m ft yd",
              "type": "string"
            }
          },
          "required": [
            "items"
          ],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "asOf": {
              "type": [
                "null",
                "string"
              ]
            },
            "bestName": {
              "type": [
                "null",
                "string"
              ]
            },
            "bestPricePerStandardUnit": {
              "type": [
                "null",
                "number"
              ]
            },
            "degraded": {
              "type": [
                "boolean",
                "null"
              ]
            },
            "disclaimer": {
              "type": [
                "null",
                "string"
              ]
            },
            "notChecked": {
              "items": {
                "type": "string"
              },
              "type": [
                "array",
                "null"
              ]
            },
            "ranked": {
              "items": {
                "properties": {
                  "amount": {
                    "type": [
                      "null",
                      "number"
                    ]
                  },
                  "name": {
                    "type": [
                      "null",
                      "string"
                    ]
                  },
                  "price": {
                    "type": [
                      "null",
                      "number"
                    ]
                  },
                  "pricePerStandardUnit": {
                    "type": [
                      "null",
                      "number"
                    ]
                  },
                  "unit": {
                    "type": [
                      "null",
                      "string"
                    ]
                  }
                },
                "type": "object"
              },
              "type": [
                "array",
                "null"
              ]
            },
            "reasons": {
              "items": {
                "type": "string"
              },
              "type": [
                "array",
                "null"
              ]
            },
            "savingsBestVsWorstPercent": {
              "type": [
                "null",
                "number"
              ]
            },
            "source": {
              "type": [
                "null",
                "string"
              ]
            },
            "standardUnit": {
              "type": [
                "null",
                "string"
              ]
            },
            "summary": {
              "type": [
                "null",
                "string"
              ]
            },
            "verdict": {
              "type": [
                "null",
                "string"
              ]
            },
            "worstName": {
              "type": [
                "null",
                "string"
              ]
            }
          },
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

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