# SiteCheck Trade & Energy – LME-Style Base Metal World Reference Prices

> SiteCheck Trade & Energy – LME-Style Base Metal World Reference Prices 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 monthly World Bank/FRED reference prices (USD per metric ton) for copper, aluminium, and zinc, with latest value plus up to 24 months of history.

## Facts

- Endpoint: GET https://api.tradeenergy-api.workers.dev/api/energy/lme-metal-cash-settled?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-lme-style-base-metal-world-reference-prices-24e2877f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0e0n9l_IdwzCcsqL-6s2L

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-lme-style-base-metal-world-reference-prices-24e2877f
```

Example prompt: Can you pull the World Bank monthly reference prices for copper, aluminium, and zinc from FRED for the last 12 months?

## When to prefer this

Choose this endpoint when you need World Bank monthly commodity benchmark prices specifically for copper, aluminium, and zinc sourced from FRED — ideal for trade economics, manufacturing cost analysis, or commodity research workflows. Prefer it over LME-specific APIs when World Bank reference prices (not live exchange settlement prices) are the required data source. Use sibling endpoints for agricultural commodities (corn, wheat, soybeans), energy products (jet fuel, uranium), or other commodity classes.

## Known failure modes

- Invalid months parameter (outside 1–24 range) may return an error or default to 3 months
- FRED upstream unavailability may cause stale or missing data
- Network timeout from the Cloudflare Worker if FRED is slow
- Payment failure (x402 protocol) if USDC balance is insufficient

## How this service works

Monthly world reference prices for copper, aluminium and zinc from FRED (World Bank series, USD). These are not LME cash-settlement prices; the name is kept for the route. Latest value plus up to 24 months of history.

## Output

A JSON object with three metal keys (copper, aluminium, zinc), each containing a unit label ('USD per metric ton'), the latest price with its date, and an array of monthly historical price objects. Also includes the FRED source URL and a checkedAt timestamp indicating when the data was last fetched.

## 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": {
      "months": {
       "type": "string",
       "description": "Months of history, 1 to 24 (default 3)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "zinc": {
   "unit": "USD per metric ton",
   "latest": {
    "date": "2026-09-01",
    "value": 4020.549047619048
   },
   "history": [
    {
     "date": "2026-09-01",
     "value": 4020.549047619048
    },
    {
     "date": "2026-08-01",
     "value": 3884.526190476191
    }
   ]
  },
  "copper": {
   "unit": "USD per metric ton",
   "latest": {
    "date": "2026-09-01",
    "value": 14473.05590909091
   },
   "history": [
    {
     "date": "2026-09-01",
     "value": 14473.05590909091
    },
    {
     "date": "2026-08-01",
     "value": 14331.26476190476
    }
   ]
  },
  "source": "https://fred.stlouisfed.org/graph/fredgraph.csv",
  "aluminium": {
   "unit": "USD per metric ton",
   "latest": {
    "date": "2026-09-01",
    "value": 3283.054285714286
   },
   "history": [
    {
     "date": "2026-09-01",
     "value": 3283.054285714286
    },
    {
     "date": "2026-08-01",
     "value": 3250.121428571429
    }
   ]
  },
  "checkedAt": "2026-10-23T09:38:07.290Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-trade-energy-lme-style-base-metal-world-reference-prices-24e2877f/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)