Contract
{
"type": "object",
"properties": {},
"additionalProperties": false
}{
"type": "object",
"properties": {
"data": {
"type": "object",
"properties": {
"date": {
"type": "string",
"description": "The date the prices were recorded, e.g. '9/18/26' (M/D/YY, no leading zeros)."
},
"prices": {
"type": "object",
"properties": {
"Diesel": {
"type": "object",
"properties": {
"current": {
"type": "number",
"description": "Today's national average price per gallon, USD."
},
"week_ago": {
"type": "number",
"description": "Price per gallon one week earlier, USD."
},
"year_ago": {
"type": "number",
"description": "Price per gallon one year earlier, USD."
},
"month_ago": {
"type": "number",
"description": "Price per gallon one month earlier, USD."
},
"yesterday": {
"type": "number",
"description": "Price per gallon one day earlier, USD."
}
},
"additionalProperties": true
},
"Premium": {
"type": "object",
"properties": {
"current": {
"type": "number",
"description": "Today's national average price per gallon, USD."
},
"week_ago": {
"type": "number",
"description": "Price per gallon one week earlier, USD."
},
"year_ago": {
"type": "number",
"description": "Price per gallon one year earlier, USD."
},
"month_ago": {
"type": "number",
"description": "Price per gallon one month earlier, USD."
},
"yesterday": {
"type": "number",
"description": "Price per gallon one day earlier, USD."
}
},
"additionalProperties": true
},
"Regular": {
"type": "object",
"properties": {
"current": {
"type": "number",
"description": "Today's national average price per gallon, USD."
},
"week_ago": {
"type": "number",
"description": "Price per gallon one week earlier, USD."
},
"year_ago": {
"type": "number",
"description": "Price per gallon one year earlier, USD."
},
"month_ago": {
"type": "number",
"description": "Price per gallon one month earlier, USD."
},
"yesterday": {
"type": "number",
"description": "Price per gallon one day earlier, USD."
}
},
"additionalProperties": true
},
"Mid-Grade": {
"type": "object",
"properties": {
"current": {
"type": "number",
"description": "Today's national average price per gallon, USD."
},
"week_ago": {
"type": "number",
"description": "Price per gallon one week earlier, USD."
},
"year_ago": {
"type": "number",
"description": "Price per gallon one year earlier, USD."
},
"month_ago": {
"type": "number",
"description": "Price per gallon one month earlier, USD."
},
"yesterday": {
"type": "number",
"description": "Price per gallon one day earlier, USD."
}
},
"additionalProperties": true
}
},
"description": "One entry per fuel grade. All four grades observed (Regular, Mid-Grade, Premium, Diesel) carry the same five numeric fields.",
"additionalProperties": true
},
"location": {
"type": "string",
"description": "The scope of the figures -- observed as the literal 'National' on the real fixture."
}
},
"additionalProperties": true
},
"status": {
"type": "string",
"description": "'success' on the real call observed."
}
},
"description": "The national gas price record, as returned at routing.responseResultPath ($.output).",
"additionalProperties": true
}Pricing
Every real charge, itemised. A model that quietly omits one is a slow financial leak, so nothing here is rolled up, and a charge that only applies to some inputs says so rather than being added in.
Prices in this catalog are the provider's own list price, not your bill: Omnial MCP charges provider cost plus a platform markup on top, so what you are charged is higher than the figure shown. For the exact amount a specific call will cost, run omnial_execute with dry_run: true; that number includes the markup and is what we hold while the call runs. It is a quote, not a cap on the charge.
| Charge | Rate |
|---|---|
Per call Flat, regardless of what comes back | $0.0273 |
- Cost basis
- Not recorded
This tool's catalog entry does not record how its final bill is determined, so we will not tell you whether its cost is fixed before the call or reported by the provider afterwards. Either way what is held is a quote rather than a cap: you are charged what the call actually costs, bounded at 2x the quote.
- Updated
- Sep 23, 2026