polls.karbach.digital

Name: polls.karbach.digital
Price: 0.05 USDC
Availability: InStock

Weekly federal polling average, up to 24 months. Use when asked how party support developed over months. Source-attributed, German data, updated every six hours.

DataLiveeip155:8453Exactvia cdp

https://api.polls.karbach.digital/v1/federal/history

ElectionsGermanyPollsPoliticsBundestag

Calls · 30d

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.

$0.050

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

Last called 2026-10-18 14:02Z

—

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": 0.05,
  "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": "Weekly federal polling average, up to 24 months."
}

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 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: 50000 smallest units

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x6d8444CaEd95D9155785Da10aC00247948957D61",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "months": 6
        }
      },
      "output": {
        "type": "json",
        "example": {
          "data": {
            "months": 2,
            "series": [
              {
                "average": {
                  "AfD": 27.9,
                  "BSW": 3.4,
                  "FDP": 4.4,
                  "SPD": 12.2,
                  "Linke": 11.7,
                  "Grüne": 14.3,
                  "Union (CDU/CSU)": 21
                },
                "week_ending": "2026-08-17",
                "polls_in_window": 13
              },
              {
                "average": {
                  "AfD": 28,
                  "BSW": 3.2,
                  "FDP": 4.7,
                  "SPD": 12.3,
                  "Linke": 11.6,
                  "Grüne": 14.1,
                  "Union (CDU/CSU)": 20.9
                },
                "week_ending": "2026-08-24",
                "polls_in_window": 15
              }
            ],
            "window_days": 21
          },
          "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)",
            "polls_license": "ODbL 1.0",
            "polls_license_url": "https://opendatacommons.org/licenses/odbl/1-0/"
          },
          "project": "Ein Projekt von Karbach.Digital (https://karbach.digital)",
          "updated_at": "2026-10-18 11:20:02",
          "uncertainty": "Plain average of all institutes in a 21-day window, no house-effect correction."
        }
      }
    },
    "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": {
                "months": {
                  "type": "integer",
                  "default": 12,
                  "maximum": 24,
                  "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 14:02Z
Last indexed by Roundhouse: 2026-10-27 01:20Z
Last enriched (probe, favicon, geo): 2026-10-18 15:15Z
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/federal/history, 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.