Calculate cubic metres (CBM) for a shipment from per-piece dimensions. CBM is the standard volume unit in international shipping: 1 CBM = 1m x 1m x 1m = 1,000 litres, and ocean freight prices per "freight tonne" (1 CBM or 1,000 kg, whichever is greater).

Behavior: deterministic — identical inputs always return identical figures; total volume = pieces x per-piece CBM, with conversions to cubic feet, cubic inches and litres included. Missing or non-positive dimensions error with a validation message naming the parameter. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: cbm_per_piece, total_cbm, cubic_feet, litres, cubic_inches and pieces under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Related: chargeable_weight_calculator (air billing weight from the same dims), consignment_calculator (multi-line totals), unit_converter (single conversions), shipment_summary (full composite analysis).

Calculate air freight chargeable weight — the greater of actual gross weight and volumetric weight, which is what airlines bill. Volumetric weight (kg) = (L x W x H in cm) / divisor; the IATA-standard divisor is 6,000 (1 CBM = 166.67 kg), while express integrators (DHL, FedEx, UPS) typically use 5,000.

Behavior: deterministic; per-piece volumetric weight is rounded to 2 decimal places before totalling; basis reports which weight governs ("volumetric" = cargo is light for its size, "actual" = dense). Air mode only — sea W/M (1 CBM = 1,000 kg) is covered by consignment_calculator with mode=sea. Missing or non-positive inputs error with the failing parameter named. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: chargeable_weight_kg, basis, volumetric_weight_kg (total and per piece), gross_weight_kg, cbm, ratio, factor and pieces under result; normalized_input echoes the interpreted inputs and any defaults applied; plus confidence, _source and citation (the FreightUtils v1 response envelope).

Related: cbm_calculator (volume only), consignment_calculator (multi-line, all modes), uld_lookup (the equipment the freight flies in).

Calculate loading metres (LDM) for European road freight — how much trailer length a pallet load occupies. 1 LDM = 1 linear metre of a 2.4m-wide trailer; a standard artic is 13.6 LDM.

Provide a pallet preset OR custom length_mm + width_mm — omitting both errors with a usage hint. Behavior: deterministic; stackable=true with stack_height 2 or 3 divides the floor footprint accordingly; fits reports whether the load fits the chosen vehicle's LENGTH (give weight_kg to also see total_weight_kg against the vehicle's max payload); utilisation_percent is of the vehicle's length. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: ldm, vehicle (name, length_m, max_payload_kg), utilisation_percent, pallet_spaces (used/available), total_weight_kg, fits and warnings under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Related: vehicle_lookup (the trailer specs behind the vehicle presets), pallet_fitting_calculator (boxes onto one pallet), consignment_calculator (mixed lines including LDM).

Look up European road dangerous-goods (ADR 2025) reference data for a substance: hazard class, classification code, packing group, labels, special provisions, limited/excepted quantities, transport category, tunnel restriction code and Kemler (hazard identification) number. Covers 2,939 entries across all 9 hazard classes, from UNECE ADR 2025 (ECE/TRANS/352).

Provide exactly ONE of: un_number (exact lookup — returns every packing-group variant of that UN number), search (case-insensitive partial match on the proper shipping name), or hazard_class (all entries in a class or division). un_number is normalised — "1203", "UN1203" and "un 1203" are equivalent, and normalized_input reports the correction; explosives keep their leading zero ("0004").

Behavior: read-only reference lookup; name searches return up to 50 entries, class filters up to 100. An unknown UN number or a search with no hits errors with the API's NOT_FOUND body and a retry hint. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: count and results[] — per entry: un_number, proper_shipping_name, class, classification_code, packing_group, labels, special_provisions, limited_quantity, excepted_quantity, transport_category, tunnel_restriction_code, hazard_identification_number and variant_index/variant_count — under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: a factual compilation of the ADR table, not legal or compliance advice; classification remains the consignor's responsibility — verify against the current UNECE ADR text.

Related: adr_lq_eq_check (checks quantities against the LQ/EQ values returned here), adr_exemption_calculator (1.1.3.6 small-load points), consignment_calculator (flags dangerous-goods lines by UN number).

Calculate ADR 1.1.3.6 "small load" exemption points for a dangerous-goods load. Each substance's transport category (0-4) sets a points multiplier (category 1 x50, 2 x3, 3 x1, 4 x0); points = quantity x multiplier, and a load totalling 1,000 points or less qualifies for reduced ADR requirements. Transport category 0 substances can NEVER use this exemption — has_category_zero flags them.

Provide un_number + quantity for a single substance, or items[] for a mixed load (items takes precedence if both are given). Quantities are in kg or litres per the substance's ADR unit.

Behavior: deterministic points arithmetic over ADR 2025 reference data; UN numbers that cannot be resolved are reported in warnings; exempt is the overall verdict. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: items[] (each with transport_category, multiplier, points), total_points, threshold (1000), exempt, has_category_zero, warnings and message under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: a deterministic calculation over reference data, not legal advice — even exempt loads keep core duties (packaging, marking, documentation), and mixed-packing rules still apply; verify against the current UNECE ADR text.

Related: adr_lookup (per-substance data incl. transport category), adr_lq_eq_check (the LQ/EQ relief routes instead of 1.1.3.6).

Check whether dangerous goods qualify for ADR Limited Quantity (LQ, ADR 3.4) or Excepted Quantity (EQ, ADR 3.5) relief. LQ compares each item's per-inner-packaging quantity against that substance's LQ maximum; EQ resolves the substance's E-code (E0-E5) and checks the per-inner limit, plus the per-outer limit when inner_packaging_qty is given.

Provide mode ("lq" or "eq") and 1-20 items, each with un_number, quantity and unit — ml or L for liquids, g or kg for solids; quantity is per INNER packaging, not the whole load.

Behavior: deterministic reference check; each item gets a status and reason (an LQ value of "0" or code E0 means the relief is not permitted for that substance), with overall_status and summary counts across the batch. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: mode, overall_status, items[] (un_number, substance, class, packing_group, lq_limit or eq_code, quantity_entered, status, reason), summary {total_items, qualifying, exceeding, not_permitted} and the ADR chapter references under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: a quantity-threshold check only — LQ/EQ relief also requires packaging, marking and documentation conformity that this tool does not assess; not legal advice, verify against the current UNECE ADR text.

Related: adr_lookup (the per-substance LQ/EQ values), adr_exemption_calculator (the 1.1.3.6 load-points route instead).

Search 6,357 airlines by name, IATA code, ICAO code, AWB prefix, or country. AWB prefixes are the first 3 digits of an air waybill number and identify the issuing carrier (e.g. 176 = Emirates).

Provide ONE parameter: query is a ranked fuzzy search across names and codes; iata / icao / prefix / country are exact filters.

Behavior: read-only; fuzzy query hits report their match quality through the envelope's confidence (basis match_quality, score 0-1) with a FUZZY_BEST_MATCH advisory naming the matched field; a query with no hits returns count 0 with a NO_MATCH advisory rather than an error. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: count and results[] — per airline: airline_name, iata_code, icao_code, awb_prefix[], callsign, country, has_cargo, aliases and per-record verification fields — under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: this dataset's provenance is pending independent verification (the envelope's provenance_status says so) — confirm operationally critical codes with IATA/ICAO or the carrier.

Related: airport_lookup (searches AIRPORTS, not carriers), validate (checks an AWB number's check digit and names its airline from this dataset).

Get ISO shipping-container specifications, with optional load-fit maths. Covers 10 types: 20ft/40ft standard, 40ft and 45ft high-cube, 20ft/40ft reefer, 20ft/40ft open-top and 20ft/40ft flat-rack.

Provide type as a slug (e.g. "20ft-standard", "40ft-high-cube") for one container's record; omit it to list all 10. Add item dimensions (item_length_cm/width_cm/height_cm, optional item_weight_kg and item_quantity) to also compute how many such items fit.

Behavior: read-only reference data with per-record provenance (sources, audited_at, decision_rationale); an unknown type errors with the valid slug list. Fit calculations are geometric best-effort — they do not model load distribution, securing or mixed cargo. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: the container record — internal/external/door dimensions (cm), capacity_cbm, tare_weight_kg, max_gross_kg, max_payload_kg and euro/GMA pallet counts — under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: manufacturer-typical specs, provenance pending independent verification (the envelope's provenance_status says so) — actual equipment varies by lessor and line; confirm against the carrier's equipment guide.

Related: validate (checks a container NUMBER's ISO 6346 check digit — not specs), cbm_calculator / consignment_calculator (the cargo volume to fill it), uld_lookup (the air-freight equivalent).

Search 6,940 WCO Harmonized System (HS 2022) commodity codes — the 6-digit international customs classification layer. The first 2 digits are the chapter, 4 the heading, 6 the subheading.

Provide ONE of: query (free-text description search, min 2 chars), code (2-6 digit lookup, returns the code plus its hierarchy), or section (Roman numeral I-XXI to browse a section).

Behavior: read-only; description search is keyword-based against official HS descriptions, so everyday product words can return zero rows — count 0 with an empty results[] is a valid answer (e.g. "laptop" and "computers" find nothing; "automatic data" matches the official phrasing "automatic data processing machines"); prefer the formal tariff wording. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: the query/code echo, count and results[] (hscode, description and hierarchy context) under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: the 6-digit international level only — national tariff lines (8-10 digits) and duty rates are set per country; classification here is indicative, not a binding ruling.

Related: uk_duty_calculator (duty/VAT for a code found here), ics2_check (EU ENS goods-description quality — a different check entirely).

Look up the 11 Incoterms 2020 trade rules — who pays for transport, insurance and customs clearance, and where risk transfers from seller to buyer. 7 rules work for any transport mode (EXW, FCA, CPT, CIP, DAP, DPU, DDP); 4 are sea/inland-waterway only (FAS, FOB, CFR, CIF).

Provide code for one rule, category (any_mode | sea_only) for a filtered list, or neither to list all 11. Behavior: read-only reference; an unknown code errors with the valid code list. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: the rule record — name, category, summary, seller_responsibility, buyer_responsibility, risk_transfer, cost_transfer, insurance, export/import clearance, best_for and watch_out — under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: summarised guidance on ICC Incoterms 2020; the ICC publication is the binding text and specific contract wording prevails.

Related: uk_duty_calculator (accepts an incoterm when composing the CIF value), shipment_summary (composite analysis).

Calculate how many identical boxes fit on a pallet: boxes per layer (trying 90-degree rotation when allowed), layer count within the max height, totals, volume utilisation and weight capping.

Behavior: deterministic geometric packing of one box size in aligned rows and columns — it does not model interlocked or mixed-orientation patterns; weight_limited reports when max_payload_kg caps the count below the geometric fit; pallet_deck_height_cm defaults to 15. Missing or non-positive dimensions error naming the parameter. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: boxes_per_layer, layers, total_boxes, orientation, boxes_per_row/col, usable_height_cm, utilisation_percent, total_box_volume_cbm, wasted_space_cbm and the weight fields under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: a theoretical best-effort fit — real stacking obeys carton strength, overhang and load-stability rules it does not model.

Related: ldm_calculator (pallets into trailer length), vehicle_lookup (pallet capacity per vehicle), container_lookup (pallets into containers).

Convert freight and logistics units: weight (kg, lbs, oz, tonnes, short_tons, long_tons), volume (cbm, cuft, cuin, litres, gal_us, gal_uk), length (cm, inches, m, feet, mm), plus two freight-specific targets valid only FROM cbm — chargeable_kg (air volumetric weight at the IATA 6,000 divisor, 1 CBM = 166.67 kg) and freight_tonnes (sea W/M, 1 CBM = 1 freight tonne).

Behavior: deterministic; the response names both units and states the formula used. Cross-dimension conversions (e.g. kg to litres) and freight targets from a non-cbm source error with the accepted-unit list. Note: short ton (US) = 2,000 lb, long ton (UK) = 2,240 lb, metric tonne = 2,204.6 lb. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: input {value, unit, name}, result {value, unit, name}, formula and note under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Related: cbm_calculator (dimensions to volume first), chargeable_weight_calculator (proper air billing weight with pieces and a custom divisor).

Calculate per-line and grand totals for a multi-item mixed consignment: CBM, loading metres (LDM), volumetric weight, and the mode-specific chargeable figure (air chargeable weight, sea revenue tonnes, road LDM), plus objective advisory flags.

Provide mode (sea | air | road, default road) and either lines[] (canonical — per line: quantity, dims {l,w,h,unit}, weight {value,unit}, optional description / hs_code / un_number / stackable) or the legacy flat items[] (dimensions in cm, weight in kg). Air uses an IATA volumetric divisor (default 6000, settable via options.air_volumetric_divisor); options.container_number / options.awb_number add a check-digit sanity flag.

Behavior: deterministic; flags are advisory only — implausible density, mode/option mismatch, dangerous-goods presence by UN number against ADR 2025, and container/AWB check-digit validity — and never state that a shipment is permitted or compliant. Invalid lines error naming the offending field. Canonical schema: https://www.freightutils.com/schema/consignment.v1.json. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: schema_version, mode, per_line[] (cbm, gross_weight_kg, density, volumetric_weight_kg, ldm, revenue_tonnes, chargeable_weight_kg), totals (incl. billing_basis) and flags[] under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: best-effort deterministic calculation and reference data — not regulatory, customs or dangerous-goods compliance advice; classification, documentation and carrier acceptance remain your responsibility.

Related: cbm_calculator / chargeable_weight_calculator / ldm_calculator (single-figure versions), shipment_summary (adds vehicle/container suggestion and duty estimates), adr_lookup (what a flagged UN number is).

Search 116,129 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).

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 (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

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 2024-2) — 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).

Estimate UK import duty and VAT for a commodity code using the LIVE GOV.UK Trade Tariff — rates are fetched per request, not from a static table. The CIF value is composed from customs_value + freight_cost + insurance_cost; duty = CIF x the duty rate for the origin country; VAT (typically 20%) applies on the duty-inclusive value.

Provide commodity_code (6-10 digits), origin_country (ISO-2) and customs_value in GBP; freight_cost, insurance_cost and incoterm are optional refinements.

Behavior: live lookup plus deterministic arithmetic on the returned rate; an unknown or non-declarable commodity code errors with HMRC's message (a 6-digit code may need extending to its 8/10-digit declarable line); origin-dependent measures the tariff cannot resolve automatically surface in warnings. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: commodity_code and description, origin country, cif_value, duty_rate (+ percent), duty_amount, vat_rate, vat_amount, total_import_taxes, total_landed_cost and warnings under result; validity.as_of marks the live-rate timestamp; plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: an estimate, not a customs ruling — excise, quotas, anti-dumping measures, reliefs and origin-proof requirements can change the outcome; confirm with a customs broker or HMRC before relying on it.

Related: hs_code_lookup (find the 6-digit code first), incoterms_lookup (who actually pays these costs).

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, quantity; optional stackable, pallet_type, hs_code, un_number, customs_value); origin/destination and incoterm refine the duty leg.

Behavior: chains the same deterministic engines as the single-purpose tools; sections that cannot run (e.g. duty without a customs value) surface in warnings instead of failing the whole call. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

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

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 (the engines this chains).

Look up air-cargo ULD (Unit Load Device) specifications — 16 types spanning lower-deck containers (AKE/LD3 and family), main-deck pallets (PMC, PAG and family) and temperature-controlled units. Each record carries external/internal/door dimensions (cm), tare and max gross weight (kg), usable volume (m³), deck position and compatible aircraft.

Provide type as an IATA code ("AKE", "PMC") or slug ("ake-ld3"); omit it to list all 16; category (container | pallet | special) and deck (lower | main) filter the list.

Behavior: read-only; an unknown type errors with the valid list; per-record provenance (sources, audited_at, decision_rationale) is included. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: the ULD record (or filtered list) under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: manufacturer-typical specs, provenance pending independent verification (the envelope's provenance_status says so) — airline-specific ULD variants differ; confirm with the carrier.

Related: chargeable_weight_calculator (what the cargo inside is billed at), container_lookup (the sea-freight equivalent), airline_lookup (whose aircraft it flies on).

Look up road-freight vehicle and trailer specifications — 17 types: EU articulated trailers (standard/mega curtainsider, box, reefer, double-deck, flatbed, low-loader), US 53ft/48ft dry vans, rigid trucks (7.5-26 t) and vans (Luton, Transit, Sprinter). Each record carries internal dimensions, payload and gross weights, euro/UK pallet capacity, axle configuration and features.

Provide slug (e.g. "standard-curtainsider") for one record; omit it to list all 17; category (articulated | rigid | van) and region (EU | US) filter the list.

Behavior: read-only; an unknown slug errors with the valid list; per-record provenance (sources, audited_at, decision_rationale) is included. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: the vehicle record (or filtered list) under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: typical specs, provenance pending independent verification (the envelope's provenance_status says so) — real equipment varies by operator and build; legal payload is set by the vehicle's plated weights.

Related: ldm_calculator (whether a pallet load fits), pallet_fitting_calculator, consignment_calculator.

Estimate freight transport greenhouse-gas emissions (kgCO2e) for a shipment leg, per ISO 14083:2023 / GLEC Framework v3.2: emissions = mass x distance x a published emission-intensity factor (kgCO2e/tonne-km).

Provide mass + distance_km + mode (road | rail | sea | air | inland_waterway); optionally choose sub_mode, region/authority (uk = DEFRA, us = EPA, fr = ADEME) and basis (wtw default, or ttw). IMPORTANT: pass ACTUAL GROSS MASS, not chargeable/volumetric weight (a common air-freight mistake — see mass_basis in the result). Distance must be provided — this tool does NOT route, geocode, or compute distances.

Behavior: deterministic given the same factor edition; the fleet-average factor already includes average empty running (see empty_running) — do NOT add your own empty-return leg; sea and air are low-representativeness generic defaults (real emissions vary materially by vessel/aircraft, load factor and routing — see representativeness and the result summary). An unknown mode/sub_mode/region returns available:false with the covered options, never a fabricated factor. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: well-to-wheel AND tank-to-wheel emissions where the factor has both, the exact factor used (value, authority, edition), the tonne-km activity and a per-result _source citing BOTH the ISO method and the specific open factor, all under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: best-effort reference estimate from open factors (DEFRA / EPA / ADEME) — NOT a verified or audited carbon report.

Related: distinct from cbm_calculator / ldm_calculator / chargeable_weight_calculator (those size or bill a shipment; this one estimates its CO2e).

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 operating airline resolved from the AWB-prefix dataset; IMO: the 7-digit number); text mode with no identifiers found returns an empty found[] with a note. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

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).

Check a goods description against the official EU ICS2 stop-words list — terms the European Commission deems too vague or generic for an entry summary declaration (ENS) goods-description field (data element 18 05 000 000).

Pass description=. Behavior: deterministic term matching against the in-force EU list; each flagged term carries a note (a standalone stop-word means automatic rejection, an embedded one means make the description more specific); clean=true means no listed term matched — it does NOT guarantee acceptance, and no binary accepted/rejected verdict is given. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: the description echo, flagged[] (term + note), clean, caveat and disclaimer under result, plus a _source citing the EU list and legal basis, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: STRICTLY a reference check — not an ENS filing, not a customs-compliance determination, not legal advice; the EU list is non-exhaustive and updated periodically.

Related: hs_code_lookup (commodity codes — a different field of the ENS), uk_duty_calculator (duty/VAT, unrelated to ENS screening). Use BEFORE filing an ENS — for customs/documentation teams, brokers and agents building filing pipelines.

Look up an airport by IATA code (3 letters, e.g. "LHR"), ICAO code (4 chars, e.g. "EGLL"), or free-text name/city search (e.g. "heathrow"). Covers 85,555 airports worldwide (OurAirports, public domain, cross-checked vs OpenFlights + Wikidata).

Provide ONE of iata, icao, or query; the optional type filter narrows results. Behavior: read-only; exact code hits return one record; ambiguous name searches return ranked candidates (exact codes first, then larger airports) with match quality reported via the envelope's confidence (basis match_quality); an unknown code errors with a not-found message. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: count and results[] — per airport: IATA + ICAO/ident, name, type (large/medium/small/heliport/closed/seaplane), municipality, region, country, latitude/longitude and elevation_ft — under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: reference data only — not for navigation; verify operationally critical codes with IATA / ICAO.

Related: nearest_airport (find airports FROM a coordinate), airline_lookup (searches CARRIERS / AWB prefixes, not airports), unlocode_lookup (general transport locations, of which airports are one function).

Find the airports nearest to a caller-provided latitude/longitude, sorted by great-circle (haversine) distance with distance_km on each result. Searches 85,555 airports (OurAirports, public domain).

Provide latitude and longitude (decimal degrees); optional radius_km, max_results (1-50, default 10) and type filter (e.g. large_airport only). Coordinates are INPUT only — nothing is stored or logged.

Behavior: deterministic distance sort; confidence reflects proximity and airport size (a large airport within 25 km scores high; closed/heliport/seaplane results cap lower). This tool does NOT geocode place names and does NOT compute routes — pass coordinates you already hold. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.

Returns: count and results[] (the airport record plus distance_km) under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).

Limitations: reference data only — not for navigation; verify codes with IATA / ICAO.

Related: airport_lookup (exact code or name lookup, no distance), unlocode_lookup (named transport-location search).

Get the URL where the user can subscribe to FreightUtils Pro for higher API limits (50,000 requests/month). Use when the user asks how to upgrade or about pricing, or after any other tool errors with a 429 rate_limited body.

Behavior: static local response — no API call, never rate-limited.

Returns: url, tier, monthly_limit, monthly_price, currency and note under result. Hand the URL to the USER to open in a browser — agents must NOT attempt to complete the subscription themselves.