EU Power Dispatch API

HALOWERK provides paid endpoints that AI agents call and pay for per request via x402 on Base. No account, no API key, no signup.

TradingLiveeip155:8453Exactvia cdp
Compute-schedulingDepin-workloadsCarbon-aware-computeBattery-dispatchPower-trading
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 28 snapshots so far.
$11.47
Verified settled volume
2,654 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-21 13:21Z
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E

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://energy.halowerk.com/examples/quickstart",
  "error": "payment_required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "asset": "USDC",
        "version": "2",
        "decimals": 6,
        "eip712Domain": {
          "name": "USD Coin",
          "chainId": 8453,
          "version": "2",
          "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
        },
        "network_name": "Base Mainnet",
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://energy.halowerk.com/price/forecast",
    "tags": [
      "compute-scheduling",
      "depin-workloads",
      "carbon-aware-compute",
      "battery-dispatch",
      "power-trading",
      "germany",
      "europe"
    ],
    "method": "POST",
    "iconUrl": "https://energy.halowerk.com/favicon.svg",
    "mimeType": "application/json",
    "description": "Energy-trading and flexible-load agents buy this endpoint to compare the next 24 hours of EPEX prices and volatility.",
    "serviceName": "HALOWERK Energy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {},
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "hours": 24,
            "hourly": [
              {
                "end": "2026-07-13T23:00:00.000Z",
                "start": "2026-07-13T22:00:00.000Z",
                "price_ct_kwh": "13.96",
                "price_eur_mwh": 139.64
              },
              {
                "end": "2026-07-14T00:00:00.000Z",
                "start": "2026-07-13T23:00:00.000Z",
                "price_ct_kwh": "13.39",
                "price_eur_mwh": 133.89
              },
              {
                "end": "2026-07-14T01:00:00.000Z",
                "start": "2026-07-14T00:00:00.000Z",
                "price_ct_kwh": "12.73",
                "price_eur_mwh": 127.35
              },
              {
                "end": "2026-07-14T02:00:00.000Z",
                "start": "2026-07-14T01:00:00.000Z",
                "price_ct_kwh": "12.72",
                "price_eur_mwh": 127.22
              },
              {
                "end": "2026-07-14T03:00:00.000Z",
                "start": "2026-07-14T02:00:00.000Z",
                "price_ct_kwh": "12.77",
                "price_eur_mwh": 127.65
              },
              {
                "end": "2026-07-14T04:00:00.000Z",
                "start": "2026-07-14T03:00:00.000Z",
                "price_ct_kwh": "13.50",
                "price_eur_mwh": 135.02
              },
              {
                "end": "2026-07-14T05:00:00.000Z",
                "start": "2026-07-14T04:00:00.000Z",
                "price_ct_kwh": "14.58",
                "price_eur_mwh": 145.81
              },
              {
                "end": "2026-07-14T06:00:00.000Z",
                "start": "2026-07-14T05:00:00.000Z",
                "price_ct_kwh": "15.23",
                "price_eur_mwh": 152.27
              },
              {
                "end": "2026-07-14T07:00:00.000Z",
                "start": "2026-07-14T06:00:00.000Z",
                "price_ct_kwh": "13.57",
                "price_eur_mwh": 135.67
              },
              {
                "end": "2026-07-14T08:00:00.000Z",
                "start": "2026-07-14T07:00:00.000Z",
                "price_ct_kwh": "12.19",
                "price_eur_mwh": 121.89
              },
              {
                "end": "2026-07-14T09:00:00.000Z",
                "start": "2026-07-14T08:00:00.000Z",
                "price_ct_kwh": "10.75",
                "price_eur_mwh": 107.48
              },
              {
                "end": "2026-07-14T10:00:00.000Z",
                "start": "2026-07-14T09:00:00.000Z",
                "price_ct_kwh": "9.17",
                "price_eur_mwh": 91.69
              },
              {
                "end": "2026-07-14T11:00:00.000Z",
                "start": "2026-07-14T10:00:00.000Z",
                "price_ct_kwh": "6.40",
                "price_eur_mwh": 64.04
              },
              {
                "end": "2026-07-14T12:00:00.000Z",
                "start": "2026-07-14T11:00:00.000Z",
                "price_ct_kwh": "5.18",
                "price_eur_mwh": 51.83
              },
              {
                "end": "2026-07-14T13:00:00.000Z",
                "start": "2026-07-14T12:00:00.000Z",
                "price_ct_kwh": "5.77",
                "price_eur_mwh": 57.73
              },
              {
                "end": "2026-07-14T14:00:00.000Z",
                "start": "2026-07-14T13:00:00.000Z",
                "price_ct_kwh": "7.00",
                "price_eur_mwh": 70
              },
              {
                "end": "2026-07-14T15:00:00.000Z",
                "start": "2026-07-14T14:00:00.000Z",
                "price_ct_kwh": "9.33",
                "price_eur_mwh": 93.26
              },
              {
                "end": "2026-07-14T16:00:00.000Z",
                "start": "2026-07-14T15:00:00.000Z",
                "price_ct_kwh": "11.74",
                "price_eur_mwh": 117.44
              },
              {
                "end": "2026-07-14T17:00:00.000Z",
                "start": "2026-07-14T16:00:00.000Z",
                "price_ct_kwh": "13.83",
                "price_eur_mwh": 138.3
              },
              {
                "end": "2026-07-14T18:00:00.000Z",
                "start": "2026-07-14T17:00:00.000Z",
                "price_ct_kwh": "15.90",
                "price_eur_mwh": 159.01
              },
              {
                "end": "2026-07-14T19:00:00.000Z",
                "start": "2026-07-14T18:00:00.000Z",
                "price_ct_kwh": "18.25",
                "price_eur_mwh": 182.48
              },
              {
                "end": "2026-07-14T20:00:00.000Z",
                "start": "2026-07-14T19:00:00.000Z",
                "price_ct_kwh": "17.53",
                "price_eur_mwh": 175.32
              },
              {
                "end": "2026-07-14T21:00:00.000Z",
                "start": "2026-07-14T20:00:00.000Z",
                "price_ct_kwh": "16.88",
                "price_eur_mwh": 168.77
              },
              {
                "end": "2026-07-14T22:00:00.000Z",
                "start": "2026-07-14T21:00:00.000Z",
                "price_ct_kwh": "15.15",
                "price_eur_mwh": 151.52
              }
            ],
            "source": "EPEX DE/AT 24h forecast",
            "timestamp": "2026-07-13T22:51:10.252Z",
            "stats_eur_mwh": {
              "avg": "123.97",
              "max": "182.48",
              "min": "51.83",
              "spread": "130.65"
            }
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "properties": {},
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "price_usdc": 0.005,
  "request_url": "https://energy.halowerk.com/price/forecast",
  "x402Version": 2,
  "signing_guide": "https://energy.halowerk.com/examples/buy-nodejs",
  "capability_request": {
    "url": "https://bedarf.halowerk.com/capabilities/request",
    "cost": "free",
    "method": "POST",
    "description": "Missing a capability, or does the scope not fit? Report the need here - no payment required. Similar reports are bundled; the response returns an id you can check back on.",
    "body_example": {
      "max_price": 0.01,
      "description": "what exactly is needed",
      "requested_capability": "short label"
    }
  },
  "payment_signature_header": "PAYMENT-SIGNATURE"
}

Accepts

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

0.005USDC≈ $0.005 USD
on Base · exact scheme

Pay 0.005 USDC on Base to 0x2880…C4E5E. The signed payment is good for 5 minutes.

USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
5000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "asset": "USDC",
      "version": "2",
      "decimals": 6,
      "eip712Domain": {
        "name": "USD Coin",
        "chainId": 8453,
        "version": "2",
        "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
      },
      "network_name": "Base Mainnet",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {},
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "hours": 24,
          "hourly": [
            {
              "end": "2026-07-13T23:00:00.000Z",
              "start": "2026-07-13T22:00:00.000Z",
              "price_ct_kwh": "13.96",
              "price_eur_mwh": 139.64
            },
            {
              "end": "2026-07-14T00:00:00.000Z",
              "start": "2026-07-13T23:00:00.000Z",
              "price_ct_kwh": "13.39",
              "price_eur_mwh": 133.89
            },
            {
              "end": "2026-07-14T01:00:00.000Z",
              "start": "2026-07-14T00:00:00.000Z",
              "price_ct_kwh": "12.73",
              "price_eur_mwh": 127.35
            },
            {
              "end": "2026-07-14T02:00:00.000Z",
              "start": "2026-07-14T01:00:00.000Z",
              "price_ct_kwh": "12.72",
              "price_eur_mwh": 127.22
            },
            {
              "end": "2026-07-14T03:00:00.000Z",
              "start": "2026-07-14T02:00:00.000Z",
              "price_ct_kwh": "12.77",
              "price_eur_mwh": 127.65
            },
            {
              "end": "2026-07-14T04:00:00.000Z",
              "start": "2026-07-14T03:00:00.000Z",
              "price_ct_kwh": "13.50",
              "price_eur_mwh": 135.02
            },
            {
              "end": "2026-07-14T05:00:00.000Z",
              "start": "2026-07-14T04:00:00.000Z",
              "price_ct_kwh": "14.58",
              "price_eur_mwh": 145.81
            },
            {
              "end": "2026-07-14T06:00:00.000Z",
              "start": "2026-07-14T05:00:00.000Z",
              "price_ct_kwh": "15.23",
              "price_eur_mwh": 152.27
            },
            {
              "end": "2026-07-14T07:00:00.000Z",
              "start": "2026-07-14T06:00:00.000Z",
              "price_ct_kwh": "13.57",
              "price_eur_mwh": 135.67
            },
            {
              "end": "2026-07-14T08:00:00.000Z",
              "start": "2026-07-14T07:00:00.000Z",
              "price_ct_kwh": "12.19",
              "price_eur_mwh": 121.89
            },
            {
              "end": "2026-07-14T09:00:00.000Z",
              "start": "2026-07-14T08:00:00.000Z",
              "price_ct_kwh": "10.75",
              "price_eur_mwh": 107.48
            },
            {
              "end": "2026-07-14T10:00:00.000Z",
              "start": "2026-07-14T09:00:00.000Z",
              "price_ct_kwh": "9.17",
              "price_eur_mwh": 91.69
            },
            {
              "end": "2026-07-14T11:00:00.000Z",
              "start": "2026-07-14T10:00:00.000Z",
              "price_ct_kwh": "6.40",
              "price_eur_mwh": 64.04
            },
            {
              "end": "2026-07-14T12:00:00.000Z",
              "start": "2026-07-14T11:00:00.000Z",
              "price_ct_kwh": "5.18",
              "price_eur_mwh": 51.83
            },
            {
              "end": "2026-07-14T13:00:00.000Z",
              "start": "2026-07-14T12:00:00.000Z",
              "price_ct_kwh": "5.77",
              "price_eur_mwh": 57.73
            },
            {
              "end": "2026-07-14T14:00:00.000Z",
              "start": "2026-07-14T13:00:00.000Z",
              "price_ct_kwh": "7.00",
              "price_eur_mwh": 70
            },
            {
              "end": "2026-07-14T15:00:00.000Z",
              "start": "2026-07-14T14:00:00.000Z",
              "price_ct_kwh": "9.33",
              "price_eur_mwh": 93.26
            },
            {
              "end": "2026-07-14T16:00:00.000Z",
              "start": "2026-07-14T15:00:00.000Z",
              "price_ct_kwh": "11.74",
              "price_eur_mwh": 117.44
            },
            {
              "end": "2026-07-14T17:00:00.000Z",
              "start": "2026-07-14T16:00:00.000Z",
              "price_ct_kwh": "13.83",
              "price_eur_mwh": 138.3
            },
            {
              "end": "2026-07-14T18:00:00.000Z",
              "start": "2026-07-14T17:00:00.000Z",
              "price_ct_kwh": "15.90",
              "price_eur_mwh": 159.01
            },
            {
              "end": "2026-07-14T19:00:00.000Z",
              "start": "2026-07-14T18:00:00.000Z",
              "price_ct_kwh": "18.25",
              "price_eur_mwh": 182.48
            },
            {
              "end": "2026-07-14T20:00:00.000Z",
              "start": "2026-07-14T19:00:00.000Z",
              "price_ct_kwh": "17.53",
              "price_eur_mwh": 175.32
            },
            {
              "end": "2026-07-14T21:00:00.000Z",
              "start": "2026-07-14T20:00:00.000Z",
              "price_ct_kwh": "16.88",
              "price_eur_mwh": 168.77
            },
            {
              "end": "2026-07-14T22:00:00.000Z",
              "start": "2026-07-14T21:00:00.000Z",
              "price_ct_kwh": "15.15",
              "price_eur_mwh": 151.52
            }
          ],
          "source": "EPEX DE/AT 24h forecast",
          "timestamp": "2026-07-13T22:51:10.252Z",
          "stats_eur_mwh": {
            "avg": "123.97",
            "max": "182.48",
            "min": "51.83",
            "spread": "130.65"
          }
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "properties": {},
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-08-21 13:21Z
Last indexed by Roundhouse
2026-09-20 13:20Z
Last enriched (probe, favicon, geo)
2026-09-23 22:15Z
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

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 28 snapshots so far. 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 EU Power Dispatch API 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=EU%20Power%20Dispatch%20API'
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://energy.halowerk.com/price/forecast, 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.