# SiteCheck Trade & Energy – Henry Hub Natural Gas Spot Price

> SiteCheck Trade & Energy – Henry Hub Natural Gas Spot Price 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 the daily Henry Hub natural gas spot price in USD per MMBtu from FRED (EIA series), with latest value plus up to 60 trading days of history.

## Facts

- Endpoint: GET https://api.tradeenergy-api.workers.dev/api/energy/natural-gas-henry-hub?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-henry-hub-natural-gas-spot-price-73eaca90
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_o29G4LirWte6s7Sts42ss

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-henry-hub-natural-gas-spot-price-73eaca90
```

Example prompt: What's the current Henry Hub natural gas spot price, and can you also pull the last 30 days of price history so I can see the recent trend?

## When to prefer this

Choose this endpoint when you need the official US benchmark natural gas spot price (Henry Hub) sourced from FRED/EIA with up to 60 days of trading history. It is ideal for energy market dashboards, commodity price monitoring, trading signals, and cost-of-energy calculations. It does not cover European gas prices, LNG netback, or pipeline storage — use sibling endpoints for those.

## Known failure modes

- Invalid 'days' parameter (out of 1–60 range) may return an error or be clamped
- FRED/EIA upstream data delay may cause stale or missing latest value
- No data available for weekends or US federal holidays (natural gas spot markets are not continuous)
- Network timeout if FRED source is temporarily unavailable
- Response may lag by one trading day if EIA has not yet published the latest figure

## How this service works

Daily Henry Hub natural gas spot price in USD per MMBtu, from FRED (EIA series). Latest value plus up to 60 trading days of history. Pipeline storage and LNG netback are not included in this source.

## Output

A JSON object containing the unit (USD per MMBtu), the latest date-value pair, an array of historical date-value pairs (up to 60 trading days), the FRED source URL, and a checkedAt ISO timestamp indicating when 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": {
      "days": {
       "type": "string",
       "description": "Days of history, 1 to 60 (default 5)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "unit": "USD per MMBtu",
  "latest": {
   "date": "2026-10-20",
   "value": 3.1
  },
  "source": "https://fred.stlouisfed.org/graph/fredgraph.csv?id=DHHNGSP",
  "history": [
   {
    "date": "2026-10-20",
    "value": 3.1
   },
   {
    "date": "2026-10-19",
    "value": 3.28
   }
  ],
  "checkedAt": "2026-10-23T09:38:07.836Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-trade-energy-henry-hub-natural-gas-spot-price-73eaca90/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)