FreightUtils MCP Server

shipment_summary

Read-onlyIdempotent

Calculate shipment volume, chargeable weight, road LDM, vehicle or container suggestions, dangerous-goods presence and UK duty estimates by transport mode in one call.

Instructions

Composite shipment analysis in one call: volume (CBM), gross and chargeable weight, road LDM with pallet spaces and a vehicle suggestion (road mode), volumetric weight (air), revenue tonnes with a container suggestion (sea), dangerous-goods presence for items carrying un_number, and UK duty estimates for items carrying hs_code + customs_value.

Provide mode (road | air | sea | multimodal) and items[] (dims in cm, weight in kg PER ITEM, quantity; optional stackable, pallet_type, hs_code, un_number, customs_value PER ITEM, and adr_quantity — the TOTAL for the dangerous-goods line, all pieces together); origin/destination and incoterm refine the duty leg.

Behavior: calls the ldm_calculator, adr_lookup and uk_duty_calculator engines directly; CBM, volumetric weight and revenue tonnes are the same arithmetic inline rather than a call out. Road LDM uses the 2.40 m loading-metre convention divisor and, like ldm_calculator, treats an item with no stackable flag as NOT stacked. modeSpecific.palletSpaces is pallet FLOOR POSITIONS (the figure ldm_calculator reports); palletRows is the separate row count. The suggested vehicle is the smallest that holds the load by its length, its payload and its pallet floor positions — the record's own count when it is a floor count, otherwise worked from its deck (a 7.5t rigid holds 15 Euro pallets on the floor; modeSpecific.suggestedVehicleFloorPositions says which) — and trailerUtilisation is of that vehicle (utilisationBasis names it); the suggested container is the smallest dry box whose record holds the volume and payload. Sections that cannot run (e.g. duty without a customs value) surface in warnings instead of failing the whole call. Fields are checked by name: a field the tool does not read is refused with a tool error naming it and listing the accepted ones, never ignored. Rate-limited: a limit error carries reset_at, the UTC time the allowance resets.

Returns: mode, itemCount, totals {pieces, grossWeight, volumeCBM, chargeableWeight, billingBasis}, modeSpecific (LDM / pallet floor positions / pallet rows / suggested vehicle, or revenue tonnes / container), warnings and dataVersion (road mode attributes the vehicle dataset and the LDM divisor) under result — note this composite's result uses camelCase field names (legacy shape); plus confidence, _source and citation (the FreightUtils v1 response envelope).

Editions: edition ("2025" | "2027") and as_of (YYYY-MM-DD) choose the ADR edition — edition wins, else the date picks it (ADR 2025 before 2027-01-01, ADR 2027 from then; ADR 2025 may still be applied until 2027-06-30). An answer on a named edition carries adr_edition; neither sent, the answer is ADR 2025 until 2027-01-01.

Limitations: a planning summary, not a quotation or compliance determination.

Related: consignment_calculator (canonical snake_case lines[] shape with advisory flags), cbm_calculator, chargeable_weight_calculator, ldm_calculator, adr_lookup, uk_duty_calculator. ldm_calculator, adr_lookup and uk_duty_calculator are the engines this actually calls; the rest are the single-purpose equivalents of arithmetic it does inline.

Input Schema

Name	Required	Description
`mode`	No	Transport mode — selects the mode-specific section of the result. Required unless consignment is sent.
`as_of`	No	YYYY-MM-DD the answer is for (default today, UTC); picks the ADR edition when edition is omitted, and is echoed in the answer and its check receipt.
`items`	No	Required unless consignment is sent. Shipment items with dimensions, weight and optional HS/UN codes.
`origin`	No	Origin — ISO country code and optional UN/LOCODE.
`edition`	No	ADR edition: "2025" or "2027". Wins over as_of. Omit it and as_of picks the edition by the legal timeline: before 2027-01-01 ADR 2025; from 2027-01-01 ADR 2027 (ADR 2025 may still be applied until 2027-06-30 under 1.6.1.1 — edition "2025" answers on it until then); from 2027-07-01 ADR 2027 only. An ADR 2027 answer for a date before 2027-01-01 carries an EDITION_NOT_YET_APPLICABLE warning.
`incoterm`	No	Incoterms 2020 three-letter code. Examples: "DAP", "EXW", "FOB".
`consignment`	No	Alternative to the other arguments: the consignment object (https://www.freightutils.com/schema/consignment-object.v1.json) — lines[], journey, vehicle, options. Send it alone; an input this tool needs and the object lacks comes back in missing_inputs.
`destination`	No	Destination — ISO country code and optional UN/LOCODE.
`freight_cost`	No	Freight cost in GBP for the duty calculation, 0 or more. Default: 0.
`insurance_cost`	No	Insurance cost in GBP for the duty calculation, 0 or more. Default: 0.

Output Schema

Name	Required	Description	Default
`ok`	Yes
`_meta`	No
`as_of`	No
`result`	Yes
`status`	No
`_source`	Yes
`edition`	No
`citation`	Yes
`validity`	No
`warnings`	No
`confidence`	Yes
`missing_inputs`	No
`blocking_errors`	No
`envelope_version`	Yes
`normalized_input`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed10 schema fields changedv2.27.0Oct 31, 2026

addedInput schema / properties / as_of

Added value: +{
+  "description": "YYYY-MM-DD the answer is for (default today, UTC); picks the ADR edition when edition is omitted, and is echoed in the answer and its check receipt.",
+  "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+  "type": "string"
+}

addedInput schema / properties / consignment

Added value: +{
+  "additionalProperties": {},
+  "description": "Alternative to the other arguments: the consignment object (https://www.freightutils.com/schema/consignment-object.v1.json) — lines[], journey, vehicle, options. Send it alone; an input this tool needs and the object lacks comes back in missing_inputs.",
+  "propertyNames": {
+    "type": "string"
+  },
+  "type": "object"
+}

addedInput schema / properties / edition

Added value: +{
+  "description": "ADR edition: \"2025\" or \"2027\". Wins over as_of. Omit it and as_of picks the edition by the legal timeline: before 2027-01-01 ADR 2025; from 2027-01-01 ADR 2027 (ADR 2025 may still be applied until 2027-06-30 under 1.6.1.1 — edition \"2025\" answers on it until then); from 2027-07-01 ADR 2027 only. An ADR 2027 answer for a date before 2027-01-01 carries an EDITION_NOT_YET_APPLICABLE warning.",
+  "enum": [
+    "2025",
+    "2027"
+  ],
+  "type": "string"
+}

changedInput schema / properties / items / description

Previous value: -"Shipment items with dimensions, weight and optional HS/UN codes."New value: +"Required unless consignment is sent. Shipment items with dimensions, weight and optional HS/UN codes."

changedInput schema / properties / mode / description

Previous value: -"Transport mode — selects the mode-specific section of the result."New value: +"Transport mode — selects the mode-specific section of the result. Required unless consignment is sent."

removedInput schema / required

Removed value: -[
-  "mode",
-  "items"
-]

addedOutput schema / properties / _meta / properties / check_id
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / _meta / properties / edition_basis
```
Added value: +{
+  "type": "string"
+}
```

addedOutput schema / properties / _meta / properties / receipt

Added value: +{
+  "additionalProperties": {},
+  "properties": {
+    "created_at": {
+      "type": "string"
+    },
+    "dataset_version": {
+      "additionalProperties": {
+        "type": "string"
+      },
+      "propertyNames": {
+        "type": "string"
+      },
+      "type": "object"
+    },
+    "engine_version": {
+      "type": "string"
+    },
+    "inputs": {},
+    "reason": {
+      "const": "key_required",
+      "type": "string"
+    },
+    "receipt_hash": {
+      "type": "string"
+    },
+    "result": {
+      "additionalProperties": {},
+      "propertyNames": {
+        "type": "string"
+      },
+      "type": "object"
+    },
+    "schema_version": {
+      "type": "string"
+    },
+    "stored": {
+      "const": false,
+      "type": "boolean"
+    },
+    "tool": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "stored",
+    "reason",
+    "schema_version",
+    "receipt_hash",
+    "created_at",
+    "tool",
+    "inputs",
+    "dataset_version",
+    "engine_version",
+    "result"
+  ],
+  "type": "object"
+}

addedOutput schema / properties / _meta / properties / receipt_url
```
Added value: +{
+  "type": "string"
+}
```

Changed10 schema fields changedv2.24.0Oct 29, 2026

addedOutput schema / properties / _meta

Added value: +{
+  "additionalProperties": {},
+  "properties": {
+    "identify": {
+      "type": "string"
+    }
+  },
+  "type": "object"
+}

addedOutput schema / properties / as_of
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / blocking_errors / items / properties / recovery / properties / params / propertyNames
```
Added value: +{
+  "type": "string"
+}
```

addedOutput schema / properties / edition

Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": false,
+      "properties": {
+        "applies_from": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "may_apply_until": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "name": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "name",
+        "applies_from",
+        "may_apply_until"
+      ],
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}

changedOutput schema / properties / envelope_version / enum

Previous value: -[
-  "1",
-  "1.1"
-]New value: +[
+  "1",
+  "1.1",
+  "1.2"
+]

addedOutput schema / properties / missing_inputs

Added value: +{
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

addedOutput schema / properties / normalized_input / propertyNames
```
Added value: +{
+  "type": "string"
+}
```

changedOutput schema / properties / result / anyOf

Previous value: -[
-  {
-    "additionalProperties": true,
-    "properties": {
-      "adr": {
-        "anyOf": [
-          {
-            "additionalProperties": {},
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "dataVersion": {
-        "anyOf": [
-          {
-            "additionalProperties": {},
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "disclaimer": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "duty": {
-        "anyOf": [
-          {
-            "additionalProperties": {},
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "itemCount": {
-        "type": [
-          "number",
-          "null"
-        ]
-      },
-      "mode": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "modeSpecific": {
-        "anyOf": [
-          {
-            "additionalProperties": {},
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "totals": {
-        "anyOf": [
-          {
-            "additionalProperties": true,
-            "properties": {
-              "billingBasis": {
-                "type": [
-                  "string",
-                  "null"
-                ]
-              },
-              "chargeableWeight": {
-                "type": [
-                  "number",
-                  "null"
-                ]
-              },
-              "grossWeight": {
-                "type": [
-                  "number",
-                  "null"
-                ]
-              },
-              "pieces": {
-                "type": [
-                  "number",
-                  "null"
-                ]
-              },
-              "volumeCBM": {
-                "type": [
-                  "number",
-                  "null"
-                ]
-              }
-            },
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "warnings": {
-        "anyOf": [
-          {
-            "items": {},
-            "type": "array"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "type": "object"
-  },
-  {
-    "additionalProperties": {},
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": {},
+    "properties": {
+      "adr": {
+        "anyOf": [
+          {
+            "additionalProperties": {},
+            "propertyNames": {
+              "type": "string"
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "dataVersion": {
+        "anyOf": [
+          {
+            "additionalProperties": {},
+            "propertyNames": {
+              "type": "string"
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "disclaimer": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "duty": {
+        "anyOf": [
+          {
+            "additionalProperties": {},
+            "propertyNames": {
+              "type": "string"
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "itemCount": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "mode": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "modeSpecific": {
+        "anyOf": [
+          {
+            "additionalProperties": {},
+            "propertyNames": {
+              "type": "string"
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "totals": {
+        "anyOf": [
+          {
+            "additionalProperties": {},
+            "properties": {
+              "billingBasis": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "chargeableWeight": {
+                "type": [
+                  "number",
+                  "null"
+                ]
+              },
+              "grossWeight": {
+                "type": [
+                  "number",
+                  "null"
+                ]
+              },
+              "pieces": {
+                "type": [
+                  "number",
+                  "null"
+                ]
+              },
+              "volumeCBM": {
+                "type": [
+                  "number",
+                  "null"
+                ]
+              }
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "warnings": {
+        "anyOf": [
+          {
+            "items": {},
+            "type": "array"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      }
+    },
+    "type": "object"
+  },
+  {
+    "additionalProperties": {},
+    "propertyNames": {
+      "type": "string"
+    },
+    "type": "object"
+  }
+]

addedOutput schema / properties / status

Added value: +{
+  "enum": [
+    "ok",
+    "partial",
+    "not_found",
+    "unsupported",
+    "ambiguous"
+  ],
+  "type": "string"
+}

addedOutput schema / properties / warnings / items / properties / details / propertyNames
```
Added value: +{
+  "type": "string"
+}
```

Changed13 schema fields changedv2.22.3Oct 14, 2026

changedInput schema / properties / freight_cost / description

Previous value: -"Freight cost in GBP for the duty calculation."New value: +"Freight cost in GBP for the duty calculation, 0 or more. Default: 0."

addedInput schema / properties / freight_cost / minimum
```
Added value: +0
```

changedInput schema / properties / insurance_cost / description

Previous value: -"Insurance cost in GBP for the duty calculation."New value: +"Insurance cost in GBP for the duty calculation, 0 or more. Default: 0."

addedInput schema / properties / insurance_cost / minimum
```
Added value: +0
```

changedInput schema / properties / items / items / properties / adr_quantity / description

Previous value: -"OPTIONAL ADR 1.1.3.6.3 quantity for this dangerous-goods line, in adr_quantity_unit. SEPARATE from weight, which is gross package mass — 1.1.3.6.3 counts none of its four categories that way. Supply both on EVERY dangerous-goods line and adrFlags.totalPoints is calculated; omit either and it stays null."New value: +"OPTIONAL ADR 1.1.3.6.3 quantity for this dangerous-goods line — the total for the whole line, all pieces together (never per piece), in adr_quantity_unit. SEPARATE from weight, which is gross package mass — 1.1.3.6.3 counts none of its four categories that way. Supply both on EVERY dangerous-goods line and adrFlags.totalPoints is calculated; omit either and it stays null."

addedInput schema / properties / items / items / properties / adr_quantity / maximum
```
Added value: +1000000000
```

changedInput schema / properties / items / items / properties / customs_value / description

Previous value: -"Customs value per item in GBP — enables the duty section."New value: +"Customs value in GBP PER ITEM (per piece), 0 or more — multiplied by quantity for the line; the duty estimate uses the sum over all lines. Enables the duty section with hs_code."

addedInput schema / properties / items / items / properties / customs_value / minimum
```
Added value: +0
```
addedInput schema / properties / items / items / properties / quantity / maximum
```
Added value: +1000000
```

changedInput schema / properties / items / items / properties / weight / description

Previous value: -"Gross weight per item in kg."New value: +"Gross weight in kg PER ITEM (per piece) — multiplied by quantity."

addedInput schema / properties / items / items / properties / weight / minimum
```
Added value: +0
```
addedInput schema / properties / items / maxItems
```
Added value: +50
```
addedInput schema / properties / items / minItems
```
Added value: +1
```

Changed2 schema fields changedv2.17.3Sep 4, 2026

addedInput schema / properties / items / items / properties / adr_quantity

Added value: +{
+  "description": "OPTIONAL ADR 1.1.3.6.3 quantity for this dangerous-goods line, in adr_quantity_unit. SEPARATE from weight, which is gross package mass — 1.1.3.6.3 counts none of its four categories that way. Supply both on EVERY dangerous-goods line and adrFlags.totalPoints is calculated; omit either and it stays null.",
+  "exclusiveMinimum": 0,
+  "type": "number"
+}

addedInput schema / properties / items / items / properties / adr_quantity_unit

Added value: +{
+  "description": "Dimension of adr_quantity. CHECKED against the dimension 1.1.3.6.3 counts for the row — a litres entry given kilograms still withholds the total.",
+  "enum": [
+    "L",
+    "kg"
+  ],
+  "type": "string"
+}

Changed5 schema fields changedv2.17.2Aug 21, 2026
- addedOutput schema / properties / _source / properties / authority_current_edition
```
Added value: +{
+  "type": "string"
+}
```
- addedOutput schema / properties / _source / properties / checked_at
```
Added value: +{
+  "type": "string"
+}
```
- addedOutput schema / properties / _source / properties / dataset_edition
```
Added value: +{
+  "type": "string"
+}
```
- removedOutput schema / properties / envelope_version / const
```
Removed value: -"1"
```
- addedOutput schema / properties / envelope_version / enum
```
Added value: +[
+  "1",
+  "1.1"
+]
```

Changed19 schema fields changedv2.11.0Jul 10, 2026

changedInput schema / properties / destination / description

Previous value: -"Destination location — ISO country code and optional UN/LOCODE"New value: +"Destination — ISO country code and optional UN/LOCODE."

changedInput schema / properties / freight_cost / description

Previous value: -"Optional freight cost in GBP for duty calculation"New value: +"Freight cost in GBP for the duty calculation."

changedInput schema / properties / incoterm / description

Previous value: -"Incoterms 2020 three-letter code (e.g. 'DAP', 'EXW', 'FOB')"New value: +"Incoterms 2020 three-letter code. Examples: \"DAP\", \"EXW\", \"FOB\"."

changedInput schema / properties / insurance_cost / description

Previous value: -"Optional insurance cost in GBP for duty calculation"New value: +"Insurance cost in GBP for the duty calculation."

changedInput schema / properties / items / description

Previous value: -"Array of shipment items with dimensions, weight, and optional HS/UN codes"New value: +"Shipment items with dimensions, weight and optional HS/UN codes."

changedInput schema / properties / items / items / properties / customs_value / description

Previous value: -"Customs value per item in GBP"New value: +"Customs value per item in GBP — enables the duty section."

addedInput schema / properties / items / items / properties / description / description
```
Added value: +"Optional item label."
```
changedInput schema / properties / items / items / properties / height / description
```
Previous value: -"Height in cm"New value: +"Height in cm."
```

changedInput schema / properties / items / items / properties / hs_code / description

Previous value: -"HS code for customs"New value: +"HS code — enables the duty section together with customs_value."

changedInput schema / properties / items / items / properties / length / description
```
Previous value: -"Length in cm"New value: +"Length in cm."
```

changedInput schema / properties / items / items / properties / pallet_type / description

Previous value: -"Pallet standard the item sits on, if any"New value: +"Pallet standard the item sits on, if any."

changedInput schema / properties / items / items / properties / quantity / description
```
Previous value: -"Number of items"New value: +"Number of items."
```

changedInput schema / properties / items / items / properties / stackable / description

Previous value: -"Whether this item can be stacked (affects pallet fitting calc)"New value: +"Whether this item can be stacked (affects pallet fitting)."

changedInput schema / properties / items / items / properties / un_number / description

Previous value: -"UN number for dangerous goods"New value: +"UN number — enables the dangerous-goods section."

changedInput schema / properties / items / items / properties / weight / description

Previous value: -"Gross weight per item in kg"New value: +"Gross weight per item in kg."

changedInput schema / properties / items / items / properties / width / description
```
Previous value: -"Width in cm"New value: +"Width in cm."
```

changedInput schema / properties / mode / description

Previous value: -"Transport mode"New value: +"Transport mode — selects the mode-specific section of the result."

changedInput schema / properties / origin / description

Previous value: -"Origin location — ISO country code and optional UN/LOCODE"New value: +"Origin — ISO country code and optional UN/LOCODE."

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": false,
+  "properties": {
+    "_source": {
+      "additionalProperties": false,
+      "properties": {
+        "checked": {
+          "type": "string"
+        },
+        "name": {
+          "type": "string"
+        },
+        "provenance_status": {
+          "enum": [
+            "verified",
+            "pending-verification",
+            "computed",
+            "live"
+          ],
+          "type": "string"
+        },
+        "source_url": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "name",
+        "checked",
+        "provenance_status"
+      ],
+      "type": "object"
+    },
+    "blocking_errors": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "code": {
+            "type": "string"
+          },
+          "message": {
+            "type": "string"
+          },
+          "recovery": {
+            "additionalProperties": false,
+            "properties": {
+              "action": {
+                "type": "string"
+              },
+              "params": {
+                "additionalProperties": {},
+                "type": "object"
+              },
+              "tool": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "action"
+            ],
+            "type": "object"
+          }
+        },
+        "required": [
+          "code",
+          "message",
+          "recovery"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "citation": {
+      "additionalProperties": false,
+      "properties": {
+        "qualifier": {
+          "type": "string"
+        },
+        "text": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "text"
+      ],
+      "type": "object"
+    },
+    "confidence": {
+      "additionalProperties": false,
+      "properties": {
+        "basis": {
+          "enum": [
+            "deterministic",
+            "provenance",
+            "match_quality",
+            "freshness"
+          ],
+          "type": "string"
+        },
+        "level": {
+          "enum": [
+            "high",
+            "medium",
+            "low"
+          ],
+          "type": "string"
+        },
+        "score": {
+          "maximum": 1,
+          "minimum": 0,
+          "type": "number"
+        }
+      },
+      "required": [
+        "level",
+        "basis"
+      ],
+      "type": "object"
+    },
+    "envelope_version": {
+      "const": "1",
+      "type": "string"
+    },
+    "normalized_input": {
+      "additionalProperties": {},
+      "type": "object"
+    },
+    "ok": {
+      "type": "boolean"
+    },
+    "result": {
+      "anyOf": [
+        {
+          "additionalProperties": true,
+          "properties": {
+            "adr": {
+              "anyOf": [
+                {
+                  "additionalProperties": {},
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "dataVersion": {
+              "anyOf": [
+                {
+                  "additionalProperties": {},
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "disclaimer": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "duty": {
+              "anyOf": [
+                {
+                  "additionalProperties": {},
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "itemCount": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "mode": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "modeSpecific": {
+              "anyOf": [
+                {
+                  "additionalProperties": {},
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "totals": {
+              "anyOf": [
+                {
+                  "additionalProperties": true,
+                  "properties": {
+                    "billingBasis": {
+                      "type": [
+                        "string",
+                        "null"
+                      ]
+                    },
+                    "chargeableWeight": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "grossWeight": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "pieces": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "volumeCBM": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    }
+                  },
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "warnings": {
+              "anyOf": [
+                {
+                  "items": {},
+                  "type": "array"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            }
+          },
+          "type": "object"
+        },
+        {
+          "additionalProperties": {},
+          "type": "object"
+        }
+      ]
+    },
+    "validity": {
+      "additionalProperties": false,
+      "properties": {
+        "as_of": {
+          "type": "string"
+        },
+        "effective_from": {
+          "type": "string"
+        },
+        "effective_to": {
+          "type": [
+            "string",
+            "null"
+          ]
+        }
+      },
+      "required": [
+        "as_of"
+      ],
+      "type": "object"
+    },
+    "warnings": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "code": {
+            "type": "string"
+          },
+          "details": {
+            "additionalProperties": {},
+            "type": "object"
+          },
+          "message": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "required": [
+    "envelope_version",
+    "ok",
+    "result",
+    "confidence",
+    "_source",
+    "citation"
+  ],
+  "type": "object"
+}

Addedv2.1.1May 17, 2026

TDQS

A4.6/5.0

Behavior5/5

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

Beyond the annotations, it discloses rate-limiting (reset_at on limit errors), engine delegation, the 2.40 m LDM divisor convention, the non-stacked default, vehicle/container suggestion logic, warning-vs-failure behavior for unrunnable sections, and strict field-name validation with errors. This is far more than the readOnly/idempotent annotations convey.

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

Conciseness4/5

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

Front-loaded with the one-call summary and organized into Behavior / Returns / Editions / Limitations / Related sections, so it is navigable. It is dense and occasionally verbose (e.g. the camelCase legacy-shape aside), keeping it below a 5.

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?

For a 10-parameter composite with nested objects and an output schema, the description covers scope, behavior, edition precedence, failure modes, limitations, and sibling routing. Nothing essential for correct invocation 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 already 100%, but the description adds real cross-parameter meaning: weight is per piece while adr_quantity is the whole-line total, hs_code+customs_value jointly enable duty, stackable affects pallet fitting, and edition beats as_of with the ADR timeline. These relationships exceed the per-field schema text.

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

Purpose5/5

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

The opening sentence names the specific verb+resource (composite shipment analysis) and enumerates exactly which metrics it produces (CBM, weights, LDM, volumetric weight, revenue tonnes, dangerous-goods, duty). It clearly distinguishes itself from the single-purpose siblings by stating it is the 'one call' composite.

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?

The 'Related' paragraph explicitly routes the agent: it separates the engines actually invoked (ldm_calculator, adr_lookup, uk_duty_calculator) from the single-purpose equivalents of inline arithmetic, and points to consignment_calculator for the canonical lines[] shape. It lacks an explicit 'use this instead of X when' sentence, so it falls just short of 5.

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