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出口单 chukoudan

CBM / 体积重

cbm
Read-onlyIdempotent

CBM / 体积重(CBM & volumetric weight):算立方数、毛重和空运快递计费重。 CBM, gross weight and chargeable weight for air and express. 读取数据 / Reads: divisors@current, containers@current. 输入为精确的十进制字符串 / Inputs are exact decimal strings. 每箱毛重 grossWeight 可以不填:不填就只算体积,回答里没有总毛重和计费重,并有一句说明。用户只问“多少方”时不要填,绝不要编一个重量。 / grossWeight may be left out: the answer then has the volumes only, and says so. Leave it out when the user asked only for the volume; never invent a weight. 用户没有给的数字和日期不要自己编:必填的先问用户,选填的不填。 / Never make up a figure or a date the user did not give: ask for a required one, leave an optional one out. 回复时引用回答里的 provenance.source_line / Quote provenance.source_line in your reply. 结果仅供计算参考,不是税务、法律或投资意见;回答时请带上返回的说明和来源行。 / The result is for calculation and reference only, not tax, legal or investment advice; when you answer, pass on the returned notice and source line.

Example tool call

This call uses example arguments supplied in the tool’s input schema.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "mode": "lcl",
      "cartons": [
        {
          "width": "40",
          "height": "50",
          "length": "60",
          "quantity": "450",
          "grossWeight": "18"
        }
      ],
      "lengthUnit": "cm",
      "weightUnit": "kg"
    },
    "name": "cbm"
  }
}

Input Schema

NameRequiredDescriptionDefault
modeNo运输方式。可选值:lcl = 海运拼箱;air = 空运;express = 快递 / Shipping mode. options: lcl = Sea LCL; air = Air; express = Express
cartonsYes箱规 / Carton sizes
airDivisorNo空运体积重系数 / Air divisor
lengthUnitNo尺寸单位。可选值:cm = cm;mm = mm;in = in / Size unit. options: cm = cm; mm = mm; in = in
weightUnitNo重量单位。可选值:kg = kg;lb = lb / Weight unit. options: kg = kg; lb = lb
expressDivisorNo快递体积重系数 / Express divisor

Output Schema

NameRequiredDescriptionDefault
toolYes
linksYes
stepsYes
outputsYes
warningsYes
normalizedNo
provenanceYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedInput schema / description
      Previous value: -"数字最好写成字符串(十进制,如 \"12.5\"),JSON 数字也行;千位逗号只认 1,234,567 这种写法,小数点用英文句点,不要带货币符号或单位。币种可写 USD、usd 或 美元,单位可写 cm 或 厘米,日期可写 2026-05-01、2026/05/01 或 20260501。读不准的一律拒绝并说明原因,绝不猜;回答里的 normalized 列出实际采用的值。 / Figures are best sent as decimal strings such as \"12.5\"; a JSON number is accepted too. A thousands comma only as 1,234,567; the decimal point is a dot; no currency symbols or units. A currency may be USD, usd or 美元, a unit cm or 厘米, a date 2026-05-01, 2026/05/01 or 20260501. Anything that cannot be read in exactly one way is refused with a reason, never guessed; `normalized` in the answer lists what was used."New value: +"数字最好写成字符串(十进制,如 \"12.5\"),JSON 数字也行;千位逗号只认 1,234,567 这种写法,小数点用英文句点,不要带货币符号或单位。币种可写 USD、usd 或 美元,单位可写 cm 或 厘米,日期可写 2026-05-01、2026/05/01 或 20260501。读不准的一律拒绝并说明原因,绝不猜;回答里的 normalized 列出实际采用的值。 / Figures should be sent as decimal strings such as \"12.5\"; a JSON number is accepted too. A thousands comma only as 1,234,567; the decimal point is a dot; no currency symbols or units. A currency may be USD, usd or 美元, a unit cm or 厘米, a date 2026-05-01, 2026/05/01 or 20260501. Anything that cannot be read in exactly one way is refused with a reason, never guessed; `normalized` in the answer lists what was used."
  2. Changed1 schema field changed
    • changedOutput schema / $defs / PlainValue / oneOf
      Previous value: -[
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "amount": {
      -        "type": "string"
      -      },
      -      "currency": {
      -        "description": "An ISO 4217 code.",
      -        "type": "string"
      -      },
      -      "kind": {
      -        "const": "money"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "amount",
      -      "currency"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "kind": {
      -        "const": "quantity"
      -      },
      -      "places": {
      -        "description": "How many decimal places the rounding rule keeps; pad to it, never round.",
      -        "minimum": 0,
      -        "type": "integer"
      -      },
      -      "unit": {
      -        "type": "string"
      -      },
      -      "value": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "value",
      -      "unit"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "kind": {
      -        "const": "ratio"
      -      },
      -      "value": {
      -        "description": "A fraction: 0.13 is 13 %.",
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "value"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "base": {
      -        "type": "string"
      -      },
      -      "kind": {
      -        "const": "rate"
      -      },
      -      "per": {
      -        "description": "`per` units of `base` cost `value` units of `quote`.",
      -        "type": "string"
      -      },
      -      "quote": {
      -        "type": "string"
      -      },
      -      "value": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "value",
      -      "base",
      -      "quote",
      -      "per"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "fractional": {
      -        "const": true
      -      },
      -      "grouping": {
      -        "const": false
      -      },
      -      "kind": {
      -        "const": "count"
      -      },
      -      "value": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "value"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "kind": {
      -        "const": "code"
      -      },
      -      "value": {
      -        "description": "A token from a fixed list the tool exports; the words for it are the copy key `<tool>.code.<value>`.",
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "value"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "kind": {
      -        "const": "date"
      -      },
      -      "value": {
      -        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "value"
      -    ],
      -    "type": "object"
      -  }
      -]New value: +[
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "amount": {
      +        "type": "string"
      +      },
      +      "currency": {
      +        "description": "An ISO 4217 code.",
      +        "type": "string"
      +      },
      +      "kind": {
      +        "const": "money"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "amount",
      +      "currency"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "kind": {
      +        "const": "quantity"
      +      },
      +      "places": {
      +        "description": "How many decimal places the rounding rule keeps; pad to it, never round.",
      +        "minimum": 0,
      +        "type": "integer"
      +      },
      +      "unit": {
      +        "type": "string"
      +      },
      +      "value": {
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "value",
      +      "unit"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "kind": {
      +        "const": "ratio"
      +      },
      +      "places": {
      +        "description": "How many decimal places of the fraction the rounding rule keeps; write the percentage padded to two fewer (0.2820 is 28.20 %), never round.",
      +        "minimum": 0,
      +        "type": "integer"
      +      },
      +      "value": {
      +        "description": "A fraction: 0.13 is 13 %.",
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "value"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "base": {
      +        "type": "string"
      +      },
      +      "kind": {
      +        "const": "rate"
      +      },
      +      "per": {
      +        "description": "`per` units of `base` cost `value` units of `quote`.",
      +        "type": "string"
      +      },
      +      "quote": {
      +        "type": "string"
      +      },
      +      "value": {
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "value",
      +      "base",
      +      "quote",
      +      "per"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "fractional": {
      +        "const": true
      +      },
      +      "grouping": {
      +        "const": false
      +      },
      +      "kind": {
      +        "const": "count"
      +      },
      +      "value": {
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "value"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "kind": {
      +        "const": "code"
      +      },
      +      "value": {
      +        "description": "A token from a fixed list the tool exports; the words for it are the copy key `<tool>.code.<value>`.",
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "value"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "kind": {
      +        "const": "date"
      +      },
      +      "value": {
      +        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "value"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "kind": {
      +        "const": "identifier"
      +      },
      +      "value": {
      +        "description": "A number that is data, such as a barcode number: write it as it is, keep its leading zeros, never group it.",
      +        "pattern": "^[A-Za-z0-9]{1,32}$",
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "value"
      +    ],
      +    "type": "object"
      +  }
      +]
  3. Changed3 schema fields changed
    • changedOutput schema / $defs / PlainValue / oneOf
      Previous value: -[
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "amount": {
      -        "type": "string"
      -      },
      -      "currency": {
      -        "description": "An ISO 4217 code.",
      -        "type": "string"
      -      },
      -      "kind": {
      -        "const": "money"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "amount",
      -      "currency"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "kind": {
      -        "const": "quantity"
      -      },
      -      "places": {
      -        "description": "How many decimal places the rounding rule keeps; pad to it, never round.",
      -        "minimum": 0,
      -        "type": "integer"
      -      },
      -      "unit": {
      -        "type": "string"
      -      },
      -      "value": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "value",
      -      "unit"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "kind": {
      -        "const": "ratio"
      -      },
      -      "value": {
      -        "description": "A fraction: 0.13 is 13 %.",
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "value"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "base": {
      -        "type": "string"
      -      },
      -      "kind": {
      -        "const": "rate"
      -      },
      -      "per": {
      -        "description": "`per` units of `base` cost `value` units of `quote`.",
      -        "type": "string"
      -      },
      -      "quote": {
      -        "type": "string"
      -      },
      -      "value": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "value",
      -      "base",
      -      "quote",
      -      "per"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "grouping": {
      -        "const": false
      -      },
      -      "kind": {
      -        "const": "count"
      -      },
      -      "value": {
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "value"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "kind": {
      -        "const": "code"
      -      },
      -      "value": {
      -        "description": "A token from a fixed list the tool exports; the words for it are the copy key `<tool>.code.<value>`.",
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "value"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "additionalProperties": false,
      -    "properties": {
      -      "kind": {
      -        "const": "date"
      -      },
      -      "value": {
      -        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "kind",
      -      "value"
      -    ],
      -    "type": "object"
      -  }
      -]New value: +[
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "amount": {
      +        "type": "string"
      +      },
      +      "currency": {
      +        "description": "An ISO 4217 code.",
      +        "type": "string"
      +      },
      +      "kind": {
      +        "const": "money"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "amount",
      +      "currency"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "kind": {
      +        "const": "quantity"
      +      },
      +      "places": {
      +        "description": "How many decimal places the rounding rule keeps; pad to it, never round.",
      +        "minimum": 0,
      +        "type": "integer"
      +      },
      +      "unit": {
      +        "type": "string"
      +      },
      +      "value": {
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "value",
      +      "unit"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "kind": {
      +        "const": "ratio"
      +      },
      +      "value": {
      +        "description": "A fraction: 0.13 is 13 %.",
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "value"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "base": {
      +        "type": "string"
      +      },
      +      "kind": {
      +        "const": "rate"
      +      },
      +      "per": {
      +        "description": "`per` units of `base` cost `value` units of `quote`.",
      +        "type": "string"
      +      },
      +      "quote": {
      +        "type": "string"
      +      },
      +      "value": {
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "value",
      +      "base",
      +      "quote",
      +      "per"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "fractional": {
      +        "const": true
      +      },
      +      "grouping": {
      +        "const": false
      +      },
      +      "kind": {
      +        "const": "count"
      +      },
      +      "value": {
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "value"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "kind": {
      +        "const": "code"
      +      },
      +      "value": {
      +        "description": "A token from a fixed list the tool exports; the words for it are the copy key `<tool>.code.<value>`.",
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "value"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": false,
      +    "properties": {
      +      "kind": {
      +        "const": "date"
      +      },
      +      "value": {
      +        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "kind",
      +      "value"
      +    ],
      +    "type": "object"
      +  }
      +]
    • addedOutput schema / $defs / ProvenanceDataset / properties / amended_by
      Added value: +{
      +  "description": "The official notices whose changes this version carries on top of its edition, where there are any: each one by its number and title as the notice writes them and its own date (no page is given). The label a reader sees is the edition and these, for example 2026B + 公告2026年第29号.",
      +  "items": {
      +    "additionalProperties": false,
      +    "properties": {
      +      "day": {
      +        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      +        "type": "string"
      +      },
      +      "number": {
      +        "type": "string"
      +      },
      +      "title": {
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "number",
      +      "title",
      +      "day"
      +    ],
      +    "type": "object"
      +  },
      +  "type": "array"
      +}
    • addedOutput schema / $defs / ProvenanceDataset / properties / edition
      Added value: +{
      +  "description": "The publisher’s name for the edition (2026B), where it names them.",
      +  "type": "string"
      +}
  4. Changed2 schema fields changed
    • addedInput schema / examples
      Added value: +[
      +  {
      +    "cartons": [
      +      {
      +        "grossWeight": "18",
      +        "height": "50",
      +        "length": "60",
      +        "quantity": "450",
      +        "width": "40"
      +      }
      +    ],
      +    "lengthUnit": "cm",
      +    "mode": "lcl",
      +    "weightUnit": "kg"
      +  }
      +]
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
      +  "$defs": {
      +    "Links": {
      +      "additionalProperties": false,
      +      "description": "Addresses that go with the answer. `page`: the tool’s page on the site with the same inputs in its address, in the language asked (Chinese for a language the site does not publish yet), so a person can open the page that shows these numbers.",
      +      "properties": {
      +        "page": {
      +          "description": "The tool’s page holding these inputs.",
      +          "format": "uri",
      +          "type": "string"
      +        }
      +      },
      +      "required": [
      +        "page"
      +      ],
      +      "type": "object"
      +    },
      +    "Normalized": {
      +      "description": "What the API changed in the inputs before core saw them, so the caller sees what was understood: a JSON number as text, a thousands comma, full-width digits, a currency or unit name or a date written another way. Absent when nothing was changed.",
      +      "items": {
      +        "additionalProperties": false,
      +        "properties": {
      +          "given": {
      +            "description": "What was sent, as text.",
      +            "type": "string"
      +          },
      +          "path": {
      +            "description": "The input, like `cartons.0.length`.",
      +            "type": "string"
      +          },
      +          "used": {
      +            "description": "What core was given.",
      +            "type": "string"
      +          }
      +        },
      +        "required": [
      +          "path",
      +          "given",
      +          "used"
      +        ],
      +        "type": "object"
      +      },
      +      "type": "array"
      +    },
      +    "PlainValue": {
      +      "description": "A figure, tagged so a reader knows how to write it: amounts and quantities are exact decimal strings, never floats.",
      +      "oneOf": [
      +        {
      +          "additionalProperties": false,
      +          "properties": {
      +            "amount": {
      +              "type": "string"
      +            },
      +            "currency": {
      +              "description": "An ISO 4217 code.",
      +              "type": "string"
      +            },
      +            "kind": {
      +              "const": "money"
      +            }
      +          },
      +          "required": [
      +            "kind",
      +            "amount",
      +            "currency"
      +          ],
      +          "type": "object"
      +        },
      +        {
      +          "additionalProperties": false,
      +          "properties": {
      +            "kind": {
      +              "const": "quantity"
      +            },
      +            "places": {
      +              "description": "How many decimal places the rounding rule keeps; pad to it, never round.",
      +              "minimum": 0,
      +              "type": "integer"
      +            },
      +            "unit": {
      +              "type": "string"
      +            },
      +            "value": {
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "kind",
      +            "value",
      +            "unit"
      +          ],
      +          "type": "object"
      +        },
      +        {
      +          "additionalProperties": false,
      +          "properties": {
      +            "kind": {
      +              "const": "ratio"
      +            },
      +            "value": {
      +              "description": "A fraction: 0.13 is 13 %.",
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "kind",
      +            "value"
      +          ],
      +          "type": "object"
      +        },
      +        {
      +          "additionalProperties": false,
      +          "properties": {
      +            "base": {
      +              "type": "string"
      +            },
      +            "kind": {
      +              "const": "rate"
      +            },
      +            "per": {
      +              "description": "`per` units of `base` cost `value` units of `quote`.",
      +              "type": "string"
      +            },
      +            "quote": {
      +              "type": "string"
      +            },
      +            "value": {
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "kind",
      +            "value",
      +            "base",
      +            "quote",
      +            "per"
      +          ],
      +          "type": "object"
      +        },
      +        {
      +          "additionalProperties": false,
      +          "properties": {
      +            "grouping": {
      +              "const": false
      +            },
      +            "kind": {
      +              "const": "count"
      +            },
      +            "value": {
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "kind",
      +            "value"
      +          ],
      +          "type": "object"
      +        },
      +        {
      +          "additionalProperties": false,
      +          "properties": {
      +            "kind": {
      +              "const": "code"
      +            },
      +            "value": {
      +              "description": "A token from a fixed list the tool exports; the words for it are the copy key `<tool>.code.<value>`.",
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "kind",
      +            "value"
      +          ],
      +          "type": "object"
      +        },
      +        {
      +          "additionalProperties": false,
      +          "properties": {
      +            "kind": {
      +              "const": "date"
      +            },
      +            "value": {
      +              "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "kind",
      +            "value"
      +          ],
      +          "type": "object"
      +        }
      +      ]
      +    },
      +    "Provenance": {
      +      "additionalProperties": false,
      +      "description": "Where the figures in an answer come from. In every answer, errors included.",
      +      "properties": {
      +        "api": {
      +          "const": "v1"
      +        },
      +        "datasets": {
      +          "items": {
      +            "$ref": "#/$defs/ProvenanceDataset"
      +          },
      +          "type": "array"
      +        },
      +        "generated_at": {
      +          "description": "When the answer was made.",
      +          "format": "date-time",
      +          "type": "string"
      +        },
      +        "language": {
      +          "description": "The language of the source lines.",
      +          "enum": [
      +            "zh-CN",
      +            "en",
      +            "ja",
      +            "ko"
      +          ]
      +        },
      +        "license": {
      +          "additionalProperties": false,
      +          "description": "The license as copy keys: which text applies. `status` was `draft` until the text was approved (2026-10-12) and is `approved` now.",
      +          "properties": {
      +            "ours": {
      +              "type": "string"
      +            },
      +            "status": {
      +              "enum": [
      +                "draft",
      +                "approved"
      +              ]
      +            },
      +            "underlying": {
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "status",
      +            "ours",
      +            "underlying"
      +          ],
      +          "type": "object"
      +        },
      +        "notice": {
      +          "description": "本站非官方渠道的说明:引用本站数据时请和来源行一起转述。 / The site’s own line that it is not an official channel: pass it on with the source line when you quote us.",
      +          "type": "string"
      +        },
      +        "site": {
      +          "description": "The site the data is published by.",
      +          "type": "string"
      +        },
      +        "source_line": {
      +          "description": "来源行:回复用户时请原样引用它,让读者知道数据出自哪里、有多新。 / The credit line to quote as it is when you answer: who the figures come from and how fresh they are (the newest publisher’s day among the datasets used, or the day the answer was made).",
      +          "type": "string"
      +        }
      +      },
      +      "required": [
      +        "api",
      +        "site",
      +        "generated_at",
      +        "language",
      +        "source_line",
      +        "notice",
      +        "datasets",
      +        "license"
      +      ],
      +      "type": "object"
      +    },
      +    "ProvenanceDataset": {
      +      "additionalProperties": false,
      +      "description": "A dataset version an answer drew on. An origin the register does not let the site show is named nowhere.",
      +      "properties": {
      +        "id": {
      +          "description": "The dataset.",
      +          "type": "string"
      +        },
      +        "origin": {
      +          "description": "The origin’s id in the register; null when the site may not show it.",
      +          "type": [
      +            "string",
      +            "null"
      +          ]
      +        },
      +        "published_at": {
      +          "description": "The publisher’s own date (and time, with its offset, when it gives one).",
      +          "type": "string"
      +        },
      +        "source": {
      +          "description": "The publisher’s own source line, in the answer’s language; null when there is none to show.",
      +          "type": [
      +            "string",
      +            "null"
      +          ]
      +        },
      +        "source_url": {
      +          "description": "The publisher’s page, only where the register lets the site link to it.",
      +          "type": "string"
      +        },
      +        "version": {
      +          "description": "Its version, named after the publisher’s date.",
      +          "type": "string"
      +        }
      +      },
      +      "required": [
      +        "id",
      +        "version",
      +        "published_at",
      +        "origin",
      +        "source"
      +      ],
      +      "type": "object"
      +    },
      +    "Step": {
      +      "additionalProperties": false,
      +      "description": "One line of the worked example: `id` is the copy key of its sentence, `values` fill it in.",
      +      "properties": {
      +        "id": {
      +          "type": "string"
      +        },
      +        "message": {
      +          "description": "这一步的一句话说明,数值已代入,用请求的语言。 / The step as one sentence in the language asked, its figures filled in. Absent when a sentence cannot be made whole.",
      +          "type": "string"
      +        },
      +        "values": {
      +          "additionalProperties": {
      +            "$ref": "#/$defs/PlainValue"
      +          },
      +          "type": "object"
      +        }
      +      },
      +      "required": [
      +        "id",
      +        "values"
      +      ],
      +      "type": "object"
      +    },
      +    "Warning": {
      +      "additionalProperties": false,
      +      "description": "Something a reader should know about a result; `code` is a copy key.",
      +      "properties": {
      +        "code": {
      +          "type": "string"
      +        },
      +        "level": {
      +          "description": "Absent means a caution.",
      +          "enum": [
      +            "note",
      +            "hint"
      +          ]
      +        },
      +        "message": {
      +          "description": "这条提醒的一句话说明,数值已代入,用请求的语言:回复时请用它,不要自己编数字。 / The warning as one sentence in the language asked, its figures filled in: use it, do not make up figures. Absent when a sentence cannot be made whole.",
      +          "type": "string"
      +        },
      +        "next": {
      +          "description": "For a hint: the slug of the tool it points to.",
      +          "type": "string"
      +        },
      +        "values": {
      +          "additionalProperties": {
      +            "$ref": "#/$defs/PlainValue"
      +          },
      +          "type": "object"
      +        }
      +      },
      +      "required": [
      +        "code",
      +        "values"
      +      ],
      +      "type": "object"
      +    },
      +    "cbmOutputs": {
      +      "additionalProperties": {
      +        "$ref": "#/$defs/PlainValue"
      +      },
      +      "description": "Each figure core returns, by id, as a tagged value. The ids listed are the ones the tool’s manifest names; a tool may return more (a figure that only its worked steps use), in the same form.",
      +      "properties": {
      +        "airBy": {
      +          "$ref": "#/$defs/PlainValue"
      +        },
      +        "airChargeable": {
      +          "$ref": "#/$defs/PlainValue"
      +        },
      +        "airVolumetric": {
      +          "$ref": "#/$defs/PlainValue"
      +        },
      +        "chargeable": {
      +          "$ref": "#/$defs/PlainValue"
      +        },
      +        "expressBy": {
      +          "$ref": "#/$defs/PlainValue"
      +        },
      +        "expressChargeable": {
      +          "$ref": "#/$defs/PlainValue"
      +        },
      +        "expressVolumetric": {
      +          "$ref": "#/$defs/PlainValue"
      +        },
      +        "lclBy": {
      +          "$ref": "#/$defs/PlainValue"
      +        },
      +        "lclChargeable": {
      +          "$ref": "#/$defs/PlainValue"
      +        },
      +        "perCartonVolume": {
      +          "$ref": "#/$defs/PlainValue"
      +        },
      +        "totalGrossWeight": {
      +          "$ref": "#/$defs/PlainValue"
      +        },
      +        "totalVolume": {
      +          "$ref": "#/$defs/PlainValue"
      +        }
      +      },
      +      "required": [
      +        "totalVolume",
      +        "airVolumetric",
      +        "expressVolumetric"
      +      ],
      +      "type": "object"
      +    }
      +  },
      +  "additionalProperties": false,
      +  "properties": {
      +    "links": {
      +      "$ref": "#/$defs/Links"
      +    },
      +    "normalized": {
      +      "$ref": "#/$defs/Normalized"
      +    },
      +    "outputs": {
      +      "$ref": "#/$defs/cbmOutputs"
      +    },
      +    "provenance": {
      +      "$ref": "#/$defs/Provenance"
      +    },
      +    "steps": {
      +      "items": {
      +        "$ref": "#/$defs/Step"
      +      },
      +      "type": "array"
      +    },
      +    "tool": {
      +      "const": "cbm"
      +    },
      +    "warnings": {
      +      "items": {
      +        "$ref": "#/$defs/Warning"
      +      },
      +      "type": "array"
      +    }
      +  },
      +  "required": [
      +    "tool",
      +    "outputs",
      +    "steps",
      +    "warnings",
      +    "links",
      +    "provenance"
      +  ],
      +  "type": "object"
      +}
  5. First observed

TDQS

A4/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already cover the safety profile (readOnlyHint, idempotentHint, openWorldHint=false), and the description adds genuinely new behavior: it reads divisors@current and containers@current, it returns a volumes-only answer with an explanatory sentence when grossWeight is omitted, and it refuses ambiguous input instead of guessing. It also states that the reply must carry the returned notice and provenance.source_line. The many 'never invent' admonitions are instructions to the caller rather than tool behavior, which keeps it from a 5.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Purpose and data sources are front-loaded, which is good, but the text is heavy with duplication: the bilingual pairing repeats every rule, and the 'never invent a weight / never make up a figure' rule appears three times plus a restated disclaimer at the end. Roughly a third of the content could be cut without losing information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With 6 parameters (3 enum-typed), full schema coverage, an output schema, and explicit annotations, the description supplies everything else an agent needs: units, exact-decimal input form, optional-field consequences, refusal policy, data provenance, and the requirement to echo the notice and source line. Nothing needed to invoke it correctly is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the schema already documents every field and enum, giving a baseline of 3. The description goes beyond it by explaining the consequence of omitting the optional grossWeight (volume-only result, no total gross/chargeable weight) and by insisting all figures are exact decimal strings with no units or currency symbols. That meaning is not obvious from the schema alone.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description names a concrete computational resource and the exact outputs it produces: cubic volume, gross weight, and chargeable weight for air/express (算立方数、毛重和空运快递计费重). An agent can tell this is a calculation tool rather than a rate lookup or quote generator. It stops short of naming a sibling to contrast with (e.g. container-load, freight, unit-convert), so it sits at 4 rather than 5.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It gives a real usage rule with a selection condition: if the user asks only for volume ("多少方"), omit grossWeight; if the user did not supply a required number, ask first rather than guessing. That is actionable when-to-use / when-not-to-fill guidance. It never points to an alternative tool for adjacent tasks, so no 5.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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