Skip to main content
Glama

Freight Identifier Validator

validate
Read-onlyIdempotent

Validate and parse freight identifiers by their public check-digit algorithms: shipping container numbers (ISO 6346), air waybill (AWB) numbers (IATA modulus-7) and IMO ship identification numbers.

Two modes: pass text= to find and validate every identifier in it (e.g. a booking-email line), OR pass value= + type=<container|awb|imo> to validate one.

Behavior: deterministic check-digit arithmetic; per identifier found it reports type, the normalised form, valid (pass/fail), expected vs actual check digit, and details (container: owner prefix + equipment category; AWB: airline prefix + the airline from the AWB-prefix dataset when ONE record holds the prefix — when several do (e.g. 020: Lufthansa and Lufthansa Cargo), airline is null and airline_candidates[] lists every holder with airline_note saying why, never a guessed carrier; IMO: the 7-digit number); text mode with no identifiers found returns an empty found[] with a note. Rate-limited: a limit error carries reset_at, the UTC time the allowance resets.

Returns: found[] (each entry with its own _source naming the standard applied) and disclaimer under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: STRUCTURAL ONLY — a valid check digit means well-formed, NOT that the container, shipment or vessel exists or is active; not a registry or tracking lookup.

Related: container_lookup (container TYPE specs, not numbers), airline_lookup (the AWB-prefix dataset the airline resolution uses).

Input Schema

NameRequiredDescriptionDefault
textNoArbitrary string to scan for container / AWB / IMO identifiers (parse mode). Provide this OR value+type.
typeNoIdentifier type for value: container = ISO 6346, awb = IATA Air Waybill, imo = IMO ship number; or "consignment" with the consignment argument.
valueNoA single identifier to validate (typed mode). Requires type.
consignmentNoWith type "consignment": the consignment object to validate (https://www.freightutils.com/schema/consignment-object.v1.json). The answer says whether it is valid and which checks it carries the inputs for.

Output Schema

NameRequiredDescriptionDefault
okYes
_metaNo
as_ofNo
resultYes
statusNo
_sourceYes
editionNo
citationYes
validityNo
warningsNo
confidenceYes
missing_inputsNo
blocking_errorsNo
envelope_versionYes
normalized_inputNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • 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"
      +}
  2. Changed1 schema field changed
    • 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"
      +}
  3. Changed2 schema fields changed
    • 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"
      +]
  4. Changed1 schema field changed
    • 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"
      +}
  5. Changed1 schema field changed
    • addedOutput schema / properties / _meta / properties / edition_basis
      Added value: +{
      +  "type": "string"
      +}
  6. Changed1 schema field changed
    • addedOutput schema / properties / _meta
      Added value: +{
      +  "additionalProperties": {},
      +  "properties": {
      +    "check_id": {
      +      "type": "string"
      +    },
      +    "receipt_url": {
      +      "type": "string"
      +    }
      +  },
      +  "type": "object"
      +}
  7. Changed3 schema fields changed
    • addedInput schema / properties / consignment
      Added value: +{
      +  "additionalProperties": {},
      +  "description": "With type \"consignment\": the consignment object to validate (https://www.freightutils.com/schema/consignment-object.v1.json). The answer says whether it is valid and which checks it carries the inputs for.",
      +  "propertyNames": {
      +    "type": "string"
      +  },
      +  "type": "object"
      +}
    • changedInput schema / properties / type / description
      Previous value: -"Identifier type for value: container = ISO 6346, awb = IATA Air Waybill, imo = IMO ship number."New value: +"Identifier type for value: container = ISO 6346, awb = IATA Air Waybill, imo = IMO ship number; or \"consignment\" with the consignment argument."
    • changedInput schema / properties / type / enum
      Previous value: -[
      -  "container",
      -  "awb",
      -  "imo"
      -]New value: +[
      +  "container",
      +  "awb",
      +  "imo",
      +  "consignment"
      +]
  8. Changed5 schema fields changed
    • 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"
      +}
  9. Changed2 schema fields changed
    • 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"
      +]
  10. Changed1 schema field changed
    • addedInput schema / additionalProperties
      Added value: +false
  11. Changed5 schema fields changed
    • 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"
      +]
  12. Changed14 schema fields changed
    • addedOutput schema / properties / _source
      Added value: +{
      +  "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"
      +}
    • addedOutput schema / properties / blocking_errors
      Added value: +{
      +  "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"
      +}
    • addedOutput schema / properties / citation
      Added value: +{
      +  "additionalProperties": false,
      +  "properties": {
      +    "qualifier": {
      +      "type": "string"
      +    },
      +    "text": {
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "text"
      +  ],
      +  "type": "object"
      +}
    • addedOutput schema / properties / confidence
      Added value: +{
      +  "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"
      +}
    • removedOutput schema / properties / disclaimer
      Removed value: -{
      -  "description": "Structural-validation-only disclaimer",
      -  "type": "string"
      -}
    • addedOutput schema / properties / envelope_version
      Added value: +{
      +  "const": "1",
      +  "type": "string"
      +}
    • removedOutput schema / properties / found
      Removed value: -{
      -  "description": "Every identifier found + validated (ordered by position in the input)",
      -  "items": {
      -    "additionalProperties": false,
      -    "properties": {
      -      "_source": {
      -        "additionalProperties": false,
      -        "description": "Methodology citation for the scheme",
      -        "properties": {
      -          "authority": {
      -            "type": "string"
      -          },
      -          "computed_by": {
      -            "type": "string"
      -          },
      -          "reference": {
      -            "type": "string"
      -          },
      -          "source_url": {
      -            "type": "string"
      -          },
      -          "standard": {
      -            "type": "string"
      -          },
      -          "type": {
      -            "type": "string"
      -          }
      -        },
      -        "required": [
      -          "type",
      -          "standard",
      -          "reference",
      -          "authority",
      -          "source_url",
      -          "computed_by"
      -        ],
      -        "type": "object"
      -      },
      -      "check_digit": {
      -        "additionalProperties": false,
      -        "description": "Expected vs actual check digit (null if malformed)",
      -        "properties": {
      -          "actual": {
      -            "anyOf": [
      -              {
      -                "type": "number"
      -              },
      -              {
      -                "type": "null"
      -              }
      -            ]
      -          },
      -          "expected": {
      -            "anyOf": [
      -              {
      -                "type": "number"
      -              },
      -              {
      -                "type": "null"
      -              }
      -            ]
      -          }
      -        },
      -        "required": [
      -          "expected",
      -          "actual"
      -        ],
      -        "type": "object"
      -      },
      -      "details": {
      -        "additionalProperties": {},
      -        "description": "Type-specific: owner_prefix/equipment_category (container), airline_prefix/serial/airline (awb), number (imo), or error (malformed)",
      -        "propertyNames": {
      -          "type": "string"
      -        },
      -        "type": "object"
      -      },
      -      "normalised": {
      -        "description": "Canonical form (uppercased / dashed)",
      -        "type": "string"
      -      },
      -      "raw": {
      -        "description": "The candidate as found in the input",
      -        "type": "string"
      -      },
      -      "type": {
      -        "description": "container | awb | imo",
      -        "type": "string"
      -      },
      -      "valid": {
      -        "description": "Check-digit pass/fail (structural only)",
      -        "type": "boolean"
      -      }
      -    },
      -    "required": [
      -      "type",
      -      "raw",
      -      "normalised",
      -      "valid",
      -      "check_digit",
      -      "details",
      -      "_source"
      -    ],
      -    "type": "object"
      -  },
      -  "type": "array"
      -}
    • addedOutput schema / properties / normalized_input
      Added value: +{
      +  "additionalProperties": {},
      +  "propertyNames": {
      +    "type": "string"
      +  },
      +  "type": "object"
      +}
    • removedOutput schema / properties / note
      Removed value: -{
      -  "description": "Present when nothing was found",
      -  "type": "string"
      -}
    • addedOutput schema / properties / ok
      Added value: +{
      +  "type": "boolean"
      +}
    • addedOutput schema / properties / result
      Added value: +{
      +  "additionalProperties": {},
      +  "propertyNames": {
      +    "type": "string"
      +  },
      +  "type": "object"
      +}
    • addedOutput schema / properties / validity
      Added value: +{
      +  "additionalProperties": false,
      +  "properties": {
      +    "as_of": {
      +      "type": "string"
      +    },
      +    "effective_from": {
      +      "type": "string"
      +    },
      +    "effective_to": {
      +      "anyOf": [
      +        {
      +          "type": "string"
      +        },
      +        {
      +          "type": "null"
      +        }
      +      ]
      +    }
      +  },
      +  "required": [
      +    "as_of"
      +  ],
      +  "type": "object"
      +}
    • addedOutput schema / properties / warnings
      Added value: +{
      +  "items": {
      +    "additionalProperties": false,
      +    "properties": {
      +      "code": {
      +        "type": "string"
      +      },
      +      "details": {
      +        "additionalProperties": {},
      +        "propertyNames": {
      +          "type": "string"
      +        },
      +        "type": "object"
      +      },
      +      "message": {
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "code",
      +      "message"
      +    ],
      +    "type": "object"
      +  },
      +  "type": "array"
      +}
    • changedOutput schema / required
      Previous value: -[
      -  "found",
      -  "disclaimer"
      -]New value: +[
      +  "envelope_version",
      +  "ok",
      +  "result",
      +  "confidence",
      +  "_source",
      +  "citation"
      +]
  13. Added

TDQS

A4.6/5.0
Behavior4/5

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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), so credit goes to the added behavior: deterministic arithmetic, per-identifier report fields, empty found[] plus note when nothing matches, and rate-limit errors carrying reset_at. The airline-resolution rule (null plus airline_candidates[] rather than a guessed carrier) is unusually candid. Minor gap: it never mentions the consignment mode's behavior that the schema exposes.

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 mode selection, then clearly labeled Behavior / Returns / Limitations / Related sections, so the agent can skim to what it needs. The parenthetical detail on AWB-prefix ambiguity is slightly long, and the Returns paragraph largely restates what the output schema already carries.

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 four-parameter tool with a nested object and an output schema, the description covers modes, return shape, error behavior, and scope limits. The only omission is the consignment mode, which the schema itself fully documents, so an agent can still call it correctly.

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 baseline is 3, but the description adds genuine semantics beyond the schema: the mutually exclusive text vs value+type modes and what each one scans. It stops short of documenting the 'consignment' type, which appears in the enum and as a nested object parameter but is absent from the description.

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 first sentence names a specific verb (validate/parse) and resource (freight identifiers) and pins each one to its standard: ISO 6346, IATA modulus-7, IMO. It then splits the tool into its two operating modes, so an agent can tell exactly what this does and how it differs from container_lookup or airline_lookup.

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?

It explicitly states the two call shapes (text=<arbitrary string> for finding everything in a blob vs value + type for a single identifier) and gives a concrete use case ('a booking-email line'). The Limitations section adds the when-not-to-use case: valid check digit is not a registry or tracking lookup, and the Related line routes the agent to the correct siblings for container specs and airline data.

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

Try in Browser

Glama MCP Gateway

Add one secure layer between your agents and this server.