# SiteCheck Trade & Energy – Air Cargo ULD Specs

> SiteCheck Trade & Energy – Air Cargo ULD Specs is a paid API for AI agents from api.tradeenergy-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).

Returns IATA unit load device (ULD) specifications—dimensions, volume, contour, and compatible aircraft—for LD containers and pallets, searchable by LD name or IATA code.

## Facts

- Endpoint: GET https://api.tradeenergy-api.workers.dev/api/logistics/air-cargo-uld-specs?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-trade-energy-air-cargo-uld-specs-979ee32e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zSRioii5DluSCvOpmFj7F

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sitecheck-trade-energy-air-cargo-uld-specs-979ee32e
```

Example prompt: What are the full specs for the LD3 air cargo container — its IATA code, internal volume, height, depth, width, contour, and which aircraft it fits?

## When to prefer this

Use this endpoint when you need structured, machine-readable ULD dimension and volume data keyed by IATA code or LD name, especially for cargo planning, warehouse design, or logistics tooling. Prefer over manually scraping Wikipedia when you need consistent JSON output and search-by-code capability. Note that this endpoint does not provide tare weights or max gross loads.

## Known failure modes

- No matching ULD found for the given LD name or IATA code — returns empty array with count 0
- Invalid or misspelled IATA prefix — returns empty results without error
- Wikipedia source data may be stale relative to IATA updates — data is a snapshot, not live
- Tare weights and maximum gross load data are explicitly not included and cannot be retrieved

## How this service works

Air cargo unit load device (ULD) specs: LD and pallet types with their IATA codes (AKE, AKH, PMC base P6P, etc.), internal volume (m³ and ft³), height, depth and base/overall width (mm and inches), nominal width, contour and the aircraft they fit, from the ULD table on Wikipedia (CC BY-SA 4.0). Search by LD name or IATA prefix. Tare weights and maximum gross loads vary by manufacturer and are not included.

## Output

A JSON object containing a 'ulds' array of matching ULD records, each with IATA code, type name, volume in m³ and ft³, height/depth/base/overall width in both mm and inches, nominal width, contour type, and compatible aircraft families. Also includes the query string used, result count, Wikipedia source URL, CC BY-SA 4.0 licence notice, and a timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "type": {
       "type": "string",
       "description": "Optional: LD name or IATA ULD code, e.g. LD3, AKE, P1P. Empty lists all."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ulds": [
   {
    "fits": "Airbus and Boeing widebodies, DC-10/MD-11, L-1011",
    "type": "LD3",
    "contour": "Single",
    "depthIn": 60.4,
    "depthMm": 1534,
    "heightIn": 64,
    "heightMm": 1626,
    "iataCode": "AKE",
    "volumeM3": 4.5,
    "volumeFt3": 159,
    "baseWidthIn": 61.5,
    "baseWidthMm": 1562,
    "nominalWidth": "Half",
    "overallWidthIn": 79,
    "overallWidthMm": 2007
   }
  ],
  "count": 1,
  "query": "AKE",
  "source": "https://en.wikipedia.org/wiki/Unit_load_device",
  "licence": "CC BY-SA 4.0 (Wikipedia)",
  "checkedAt": "2026-10-23T09:38:03.089Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-trade-energy-air-cargo-uld-specs-979ee32e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.tradeenergy-api.workers.dev](https://www.zero.xyz/host/api.tradeenergy-api.workers.dev/llms.txt)