FreightUtils MCP Server

UN/LOCODE Lookup

unlocode_lookup

Read-onlyIdempotent

Search 116,086 UN/LOCODE transport locations worldwide — ports, airports, rail and road terminals, inland container depots and border crossings. Codes are 5 characters: a 2-letter ISO country code + a 3-character location code (GBLHR = London Heathrow, NLRTM = Rotterdam).

Provide code for an exact record, or query (name search, min 2 chars) optionally narrowed by country and function_type; limit caps results (default 20, max 100). The spaced notation "GB LHR" reads as GBLHR in either.

Behavior: read-only; exact code hits are provenance-based while fuzzy name hits report match quality via the envelope's confidence (basis match_quality); an unknown code errors with a not-found message. Rate-limited: a limit error carries reset_at, the UTC time the allowance resets.

Returns: the location record(s) — code, name and name_ascii, country, subdivision, functions[], status, coordinates {lat, lon} and iata_code where assigned — under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: an administrative code list (UNECE UN/LOCODE 2025-1) — confirm operational status and coordinates with the port or authority before critical use.

Related: airport_lookup (airport-specific records including ICAO codes), nearest_airport (find airports by coordinates).

Identifiers: Each record carries fu_id, a stable FreightUtils identifier (and fu_version_id where the dataset has editions); resolve_reference resolves one to exactly its record.

Input Schema

Name	Required	Description
`code`	No	Exact UN/LOCODE lookup (e.g. "GBLHR", "GB LHR", "NLRTM")
`codes`	No	Batch: up to 50 UN/LOCODEs, answered as results[] in input order, each with its own status. Send alone.
`limit`	No	Max results (default 20)
`query`	No	Search by name or code (e.g. "Rotterdam", "GBLHR", "LHR")
`country`	No	ISO 2-letter country code filter (e.g. "GB", "NL")
`function_type`	No	Filter by location function

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.

Changed1 schema field changedNov 6, 2026

addedOutput schema / properties / _meta / properties / upstream

Added value: +{
+  "additionalProperties": {},
+  "properties": {
+    "datasets": {
+      "additionalProperties": {
+        "additionalProperties": {},
+        "properties": {
+          "kind": {
+            "anyOf": [
+              {
+                "enum": [
+                  "watched",
+                  "checksum-only",
+                  "manual"
+                ],
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "last_success": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "reason": {
+            "type": "string"
+          },
+          "stale": {
+            "type": "boolean"
+          },
+          "state": {
+            "enum": [
+              "in_step",
+              "changed_upstream",
+              "schema_drift",
+              "unreachable",
+              "window_missed",
+              "unknown"
+            ],
+            "type": "string"
+          },
+          "window_days": {
+            "type": [
+              "number",
+              "null"
+            ]
+          }
+        },
+        "required": [
+          "state",
+          "kind",
+          "last_success",
+          "window_days",
+          "stale"
+        ],
+        "type": "object"
+      },
+      "propertyNames": {
+        "type": "string"
+      },
+      "type": "object"
+    },
+    "stale": {
+      "type": "boolean"
+    },
+    "state": {
+      "enum": [
+        "in_step",
+        "changed_upstream",
+        "schema_drift",
+        "unreachable",
+        "window_missed",
+        "unknown"
+      ],
+      "type": "string"
+    },
+    "state_read_at": {
+      "type": [
+        "string",
+        "null"
+      ]
+    }
+  },
+  "required": [
+    "state",
+    "stale",
+    "state_read_at",
+    "datasets"
+  ],
+  "type": "object"
+}

Changed1 schema field changedNov 6, 2026

addedOutput schema / properties / _meta / properties / ids

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "pattern": {
+      "type": "string"
+    },
+    "scheme": {
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    }
+  },
+  "required": [
+    "scheme",
+    "pattern"
+  ],
+  "type": "object"
+}

Changed2 schema fields changedNov 4, 2026
- removedOutput schema / properties / _meta / properties / receipt / properties / reason / const
```
Removed value: -"key_required"
```
- addedOutput schema / properties / _meta / properties / receipt / properties / reason / enum
```
Added value: +[
+  "key_required",
+  "quota"
+]
```

Changed1 schema field changedOct 30, 2026

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"
+}

Changed1 schema field changedOct 29, 2026
- addedOutput schema / properties / _meta / properties / edition_basis
```
Added value: +{
+  "type": "string"
+}
```

Changed1 schema field changedOct 29, 2026

addedInput schema / properties / codes

Added value: +{
+  "description": "Batch: up to 50 UN/LOCODEs, answered as results[] in input order, each with its own status. Send alone.",
+  "items": {
+    "maxLength": 8,
+    "type": "string"
+  },
+  "maxItems": 50,
+  "minItems": 1,
+  "type": "array"
+}

Changed1 schema field changedOct 29, 2026

addedOutput schema / properties / _meta

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

Changed5 schema fields changedOct 29, 2026

addedOutput schema / properties / as_of

Added value: +{
+  "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+  "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 / status

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

Changed2 schema fields changedOct 28, 2026
- removedOutput schema / properties / validity / properties / effective_to / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / validity / properties / effective_to / type
```
Added value: +[
+  "string",
+  "null"
+]
```
Changed1 schema field changedOct 8, 2026
- addedInput schema / additionalProperties
```
Added value: +false
```

Changed2 schema fields changedOct 8, 2026

changedInput schema / properties / code / description

Previous value: -"Exact UN/LOCODE lookup (e.g. \"GBLHR\", \"NLRTM\")"New value: +"Exact UN/LOCODE lookup (e.g. \"GBLHR\", \"GB LHR\", \"NLRTM\")"

changedInput schema / properties / code / pattern

Previous value: -"^[A-Za-z0-9]{5}$"New value: +"^\\s*[A-Za-z]{2}[\\s-]?[A-Za-z0-9]{3}\\s*$"

Changed5 schema fields changedAug 11, 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"
+]
```

Changed1 schema field changedJul 9, 2026

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": {},
+                "propertyNames": {
+                  "type": "string"
+                },
+                "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": {},
+      "propertyNames": {
+        "type": "string"
+      },
+      "type": "object"
+    },
+    "ok": {
+      "type": "boolean"
+    },
+    "result": {
+      "additionalProperties": {},
+      "propertyNames": {
+        "type": "string"
+      },
+      "type": "object"
+    },
+    "validity": {
+      "additionalProperties": false,
+      "properties": {
+        "as_of": {
+          "type": "string"
+        },
+        "effective_from": {
+          "type": "string"
+        },
+        "effective_to": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        }
+      },
+      "required": [
+        "as_of"
+      ],
+      "type": "object"
+    },
+    "warnings": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "code": {
+            "type": "string"
+          },
+          "details": {
+            "additionalProperties": {},
+            "propertyNames": {
+              "type": "string"
+            },
+            "type": "object"
+          },
+          "message": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "required": [
+    "envelope_version",
+    "ok",
+    "result",
+    "confidence",
+    "_source",
+    "citation"
+  ],
+  "type": "object"
+}

Changed3 schema fields changedJun 19, 2026
- addedInput schema / properties / code / pattern
```
Added value: +"^[A-Za-z0-9]{5}$"
```
- addedInput schema / properties / country / pattern
```
Added value: +"^[A-Za-z]{2}$"
```
- addedInput schema / properties / query / minLength
```
Added value: +2
```
First observedApr 23, 2026

TDQS

A4.4/5.0

Behavior4/5

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

Annotations already declare read-only, idempotent, non-destructive and closed-world, so the bar is lower; the description still adds real behavior: exact hits are provenance-based, fuzzy hits expose match quality via confidence, unknown codes produce a not-found error, and rate-limit errors carry reset_at. It does not say what a partial fuzzy match does with limit truncation, but the disclosure is well beyond the annotations.

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 purpose and identifier format, then access pattern, behavior, returns, limitations and related tools in labeled form — easy to scan. It is on the long side and the Identifiers paragraph about fu_id/fu_version_id only marginally earns its space given resolve_reference exists as a sibling.

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 six-parameter lookup with an output schema, the description covers everything an agent needs: input modes, code syntax, error and rate-limit behavior, return envelope shape, data-source authority, and a caveat about operational status from an administrative list. Nothing material about invocation or interpretation is missing.

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

Parameters3/5

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

Schema coverage is 100% and the schema already carries examples and constraints for code, query, country, limit and function_type, so the baseline of 3 applies. The description adds some meaning by explaining the 2-letter country + 3-character location structure of a code and that "GB LHR" resolves to GBLHR, but it leaves `codes` (batch, up to 50, answered in input order) entirely to the schema.

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?

States a specific verb and resource ("Search 116,086 UN/LOCODE transport locations worldwide") and enumerates the covered record types (ports, airports, rail/road terminals, ICDs, border crossings). The code-format explanation with worked examples (GBLHR, NLRTM) makes the resource unambiguous, and the Related section names the sibling tools it is not.

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

Usage Guidelines5/5

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

Explicitly describes the two access modes — "Provide code for an exact record, or query (name search, min 2 chars) optionally narrowed by country and function_type" — and names alternatives with their distinguishing conditions (airport_lookup for ICAO codes, nearest_airport for coordinate search). Only the batch `codes` path is left to the schema, which documents it fully.

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

All FreightUtils MCP Server tools Inspect

Try in Browser

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Glama MCP Gateway

Add one secure layer between your agents and this server.