# ClearCheck US Fuel Price Tracker

> ClearCheck US Fuel Price Tracker is a paid API for AI agents from loonie-toll.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns this week's and last week's US retail gasoline or diesel price from EIA weekly survey data, with a RISING/FALLING/FLAT trend verdict.

## Facts

- Endpoint: GET https://loonie-toll.onrender.com/fuelprice
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/clearcheck-us-fuel-price-tracker-27e02aed
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Z6SiCEmUYiEbrm1Amh8iU

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 clearcheck-us-fuel-price-tracker-27e02aed
```

Example prompt: What's the current US retail gasoline price this week compared to last week — is it rising, falling, or flat? Pull the last 4 weeks of data.

## When to prefer this

Choose this endpoint when you need a simple, pre-interpreted US national fuel price signal with a directional verdict (RISING/FALLING/FLAT) backed by EIA weekly survey data. Ideal for dashboards, consumer apps, or agents that need a quick human-readable fuel price summary without parsing raw EIA datasets. Best for weekly granularity; not suitable for real-time pump prices or regional/state-level breakdowns.

## Known failure modes

- EIA data not yet updated for current week — may return prior week as 'latest'
- Invalid fuel type value other than 'gasoline' or 'diesel' causes validation error
- Weeks parameter out of range may return empty or partial series
- Service unavailable on Render free-tier cold start — slow or timeout on first request
- Network error fetching upstream EIA data — may return stale or error response

## How this service works

US retail gasoline or diesel price this week vs last, with a RISING / FALLING / FLAT verdict. EIA weekly survey.

## Output

Returns the latest retail fuel price in USD per gallon, the prior week's price, the change in cents, a RISING/FALLING/FLAT verdict, a time-series array for the requested number of history weeks, the EIA data source citation, a disclaimer, and a retrieval 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": {
      "fuel": {
       "enum": [
        "gasoline",
        "diesel"
       ],
       "type": "string",
       "description": "Which fuel, default gasoline"
      },
      "weeks": {
       "type": "integer",
       "description": "History weeks to return, default 4"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "fuel": {
       "type": "string"
      },
      "latest": {
       "type": "object",
       "properties": {
        "units": {
         "type": "string"
        },
        "weekOf": {
         "type": "string"
        },
        "priceUsdPerGallon": {
         "type": "number"
        }
       }
      },
      "series": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "units": {
          "type": "string"
         },
         "weekOf": {
          "type": "string"
         },
         "priceUsdPerGallon": {
          "type": "number"
         }
        }
       }
      },
      "source": {
       "type": "string"
      },
      "reasons": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "verdict": {
       "type": "string"
      },
      "disclaimer": {
       "type": "string"
      },
      "retrievedAt": {
       "type": "string"
      },
      "changeFromPriorWeekCents": {
       "type": "number"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/clearcheck-us-fuel-price-tracker-27e02aed/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from loonie-toll.onrender.com](https://www.zero.xyz/host/loonie-toll.onrender.com/llms.txt)