Natural Gas Price API

Waha Hub and WAHA_HH basis

Coverage

Waha Hub (NATURAL_GAS_WAHA), Henry Hub (NATURAL_GAS_USD), and the configured WAHA_HH basis pair where analytics access is enabled.

Source

Waha uses the NGI / Natural Gas Intelligence WTXWAHA source path. Henry Hub uses the configured EIA Henry Hub source.

Cadence

Source-observed daily hub pricing. Use returned timestamp/freshness/source fields rather than assuming live or universal freshness.

First endpoint

/v1/spreads/basis?pair=WAHA_HH

First call: Waha latest and basis

The latest price call gives the source-backed hub observation. The basis call returns Waha minus Henry Hub for the configured WAHA_HH pair.

curl "https://api.oilpriceapi.com/v1/prices/latest?by_code=NATURAL_GAS_WAHA" \
  -H "Authorization: Token YOUR_API_KEY"

curl "https://api.oilpriceapi.com/v1/spreads/basis?pair=WAHA_HH" \
  -H "Authorization: Token YOUR_API_KEY"

{
  "status": "success",
  "data": {
    "code": "NATURAL_GAS_WAHA",
    "price": -0.50,
    "currency": "USD",
    "unit": "mmbtu",
    "source": "ngi_web",
    "created_at": "2026-05-10T12:00:00Z"
  }
}

{
  "status": "success",
  "data": {
    "pair": "WAHA_HH",
    "spread_name": "Waha-Henry Hub Basis",
    "value": -2.35,
    "unit": "USD/MMBtu",
    "components": {
      "NATURAL_GAS_WAHA": -0.50,
      "NATURAL_GAS_USD": 1.85
    },
    "timestamp": "2026-05-10T12:00:00Z"
  }
}

• Use pair=WAHA_HH for the basis endpoint.
• Treat returned timestamps as the freshness signal.
• Do not hardcode positive-only price assumptions.