Roundhouse

polls.karbach.digital

Max Karbach aus dem Saarland: barrierefreie Websites, Kontor für Kontakte und Gremien, Social Media und Medienspiegel, Portale nach Maß für Gemeinden und Verbände.

InferenceLiveeip155:8453Exactvia cdp
https://api.polls.karbach.digital/v1/energy/germany
ElectionsGermanyPollsPoliticsBundestag
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 12 snapshots so far.
$2.19
Verified settled volume
105 settlements proven x402 by their on-chain EIP-3009 marker.
$0.020
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 2026-10-18 14:58Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x6d8444CaEd95D9155785Da10aC00247948957D61

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://api.polls.karbach.digital/v1/",
  "x402": "https://x402.org",
  "asset": "USDC",
  "error": "payment_required",
  "network": "Base",
  "project": "Ein Projekt von Karbach.Digital (https://karbach.digital)",
  "price_usd": 0.02,
  "free_trial": "Try before you pay: put /try in front of any paid path (for example https://api.polls.karbach.digital/try/v1/federal/trend). Same answer, no payment, 3 calls per day per IP address.",
  "how_to_pay": "This endpoint is paid per call via x402. Read the PAYMENT-REQUIRED header, pay with an x402 client (for example the x402 Python or TypeScript SDK) and repeat the request.",
  "description": "German electricity per day: generation by source, renewable share, consumption, wholesale price (incl. next day)."
}

Accepts

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

0.02USDC≈ $0.02 USD
on Base · exact scheme

Pay 0.02 USDC on Base to 0x6d84…57D61. The signed payment is good for 5 minutes.

Paid to
0x6d84…57D61
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
20000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x6d8444CaEd95D9155785Da10aC00247948957D61",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "days": 7
        }
      },
      "output": {
        "type": "json",
        "example": {
          "data": {
            "days": 2,
            "note": "Public net generation as reported by SMARD; a day appears only when all active sources and consumption are reported. Prices: day-ahead DE-LU daily average, a...",
            "series": [
              {
                "date": "2026-10-15",
                "generation_gwh": {
                  "hydro": 28.1,
                  "solar": 228.2,
                  "biomass": 98.2,
                  "lignite": 262.1,
                  "hard_coal": 82.6,
                  "natural_gas": 203.3,
                  "wind_onshore": 197.2,
                  "wind_offshore": 120.1,
                  "pumped_storage": 32.4,
                  "other_renewable": 1.9,
                  "other_conventional": 39.2
                },
                "consumption_gwh": 1370,
                "renewable_share_pct": 52.1,
                "generation_total_gwh": 1293.3,
                "wholesale_price_eur_per_mwh": 187.3
              },
              {
                "date": "2026-10-16",
                "generation_gwh": {
                  "hydro": 25.7,
                  "solar": 232.1,
                  "biomass": 98.3,
                  "lignite": 274.1,
                  "hard_coal": 77.6,
                  "natural_gas": 199.5,
                  "wind_onshore": 199.6,
                  "wind_offshore": 85.9,
                  "pumped_storage": 25.7,
                  "other_renewable": 2.2,
                  "other_conventional": 42.9
                },
                "consumption_gwh": 1322.3,
                "renewable_share_pct": 50.9,
                "generation_total_gwh": 1263.7,
                "wholesale_price_eur_per_mwh": 210.67
              }
            ],
            "summary": {
              "avg_renewable_share_pct": 51.5,
              "avg_wholesale_price_eur_per_mwh": 198.99
            },
            "labels_de": {
              "hydro": "Wasserkraft",
              "solar": "Photovoltaik",
              "biomass": "Biomasse",
              "lignite": "Braunkohle",
              "nuclear": "Kernenergie",
              "hard_coal": "Steinkohle",
              "natural_gas": "Erdgas",
              "wind_onshore": "Wind Onshore",
              "wind_offshore": "Wind Offshore",
              "pumped_storage": "Pumpspeicher",
              "other_renewable": "Sonstige Erneuerbare",
              "other_conventional": "Sonstige Konventionelle"
            },
            "last_complete_day": "2026-10-16",
            "wholesale_price_next_days": {
              "2026-10-17": 168.27,
              "2026-10-18": 175.21,
              "2026-10-19": 208.44
            }
          },
          "docs": "https://api.polls.karbach.digital/v1/",
          "model": null,
          "notice": "Scenario analysis based on published opinion polls. Not a prediction and not a voting recommendation. Coalitions are arithmetic majorities only, not statemen...",
          "source": {
            "polls": "dawum.de",
            "processing": "polls.karbach.digital (Max Karbach)",
            "energy_europe": "Eurostat (nrg_pc_204, nrg_pc_202)",
            "polls_license": "ODbL 1.0",
            "energy_germany": "SMARD.de, Bundesnetzagentur",
            "polls_license_url": "https://opendatacommons.org/licenses/odbl/1-0/",
            "energy_europe_license": "Eurostat reuse policy, attribution required",
            "energy_germany_license": "CC BY 4.0"
          },
          "project": "Ein Projekt von Karbach.Digital (https://karbach.digital)",
          "updated_at": "2026-10-18T14:31:14+00:00",
          "uncertainty": null
        }
      }
    },
    "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",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "properties": {
                "days": {
                  "type": "integer",
                  "maximum": 365,
                  "minimum": 1
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-18 14:58Z
Last indexed by Roundhouse
2026-10-26 17:20Z
Last enriched (probe, favicon, geo)
2026-10-18 16:15Z
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. 12 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 polls.karbach.digital 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=polls.karbach.digital'
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://api.polls.karbach.digital/v1/energy/germany, 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. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

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