Roundhouse AI

DieselPriceWatch

New US Energy Information Administration observations of US diesel price. (Requires EIA_API_KEY; no-ops until set.)

TradingLiveeip155:8453Exactvia cdp
https://oracles-production.up.railway.app/v1/energy-diesel/changes
DataEnergyEiaCommoditiesPrices
Settlements · 30d
11↓ 100%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$175.42
Verified settled volume
1,549 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xC66EE26cAE6cd34970f51f644f36D720826d392A

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "docs": [
    "https://oracles-production.up.railway.app/llms.txt",
    "https://oracles-production.up.railway.app/.well-known/x402",
    "https://oracles-production.up.railway.app/openapi.json"
  ],
  "error": "payment_required",
  "message": "This endpoint costs $0.05 USDC per call via the x402 protocol (terms in the PAYMENT-REQUIRED header).",
  "freeSample": "https://oracles-production.up.railway.app/v1/energy-diesel/sample"
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.05USDC≈ $0.05 USD
on Base · exact scheme

Pay 0.05 USDC on Base to 0xC66E…d392A. The signed payment is good for 5 minutes.

Paid to
0xC66E…d392A
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
50000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xC66EE26cAE6cd34970f51f644f36D720826d392A",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "since": "2026-06-01T00:00:00Z"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "count": 1,
          "source": "energy-diesel",
          "changes": [
            {
              "type": "update",
              "title": "Something changed",
              "entityId": "example:123",
              "sourceUrl": "https://example.gov/source",
              "detectedAt": "2026-07-01T00:00:00Z",
              "significance": 6
            }
          ]
        }
      }
    },
    "schema": {
      "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",
              "properties": {
                "limit": {
                  "type": "integer",
                  "maximum": 500,
                  "minimum": 1
                },
                "since": {
                  "type": "string",
                  "format": "date-time",
                  "description": "Only changes detected after this ISO-8601 instant"
                },
                "min_significance": {
                  "type": "integer",
                  "maximum": 10,
                  "minimum": 1,
                  "description": "Keep only changes scored at least this"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "properties": {
                "count": {
                  "type": "integer"
                },
                "source": {
                  "type": "string"
                },
                "changes": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
                      "type": {
                        "type": "string"
                      },
                      "title": {
                        "type": "string"
                      },
                      "detail": {
                        "type": "object"
                      },
                      "summary": {
                        "type": "string"
                      },
                      "entityId": {
                        "type": "string"
                      },
                      "sourceUrl": {
                        "type": [
                          "string",
                          "null"
                        ],
                        "description": "Primary-source link for verification"
                      },
                      "detectedAt": {
                        "type": "string",
                        "format": "date-time"
                      },
                      "significance": {
                        "type": "integer",
                        "maximum": 10,
                        "minimum": 1
                      },
                      "effectiveDate": {
                        "type": [
                          "string",
                          "null"
                        ]
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-07-14 22:03Z
Last indexed by Roundhouse
2026-07-15 00:30Z
Last enriched (probe, favicon, geo)
2026-09-21 18:15Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 402
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service DieselPriceWatch and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=DieselPriceWatch'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://oracles-production.up.railway.app/v1/energy-diesel/changes, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.