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polls.karbach.digital – German Federal Polls Historical Series
x402
polls.karbach.digital – German Federal Polls Historical Series is a paid API for AI agents from api.polls.karbach.digital, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-28).
Returns a weekly time-series of German federal poll averages (party vote shares) over a configurable look-back window of 1–24 months
Price / call$0.05
Success—
StatusUnknown
How this service works
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.
Output
A JSON object containing a weekly series of 21-day rolling poll averages for all major German parties (AfD, SPD, Union CDU/CSU, Grüne, FDP, BSW, Linke), each entry including the week_ending date, per-party vote share percentages, and the number of polls included in that window. Also includes metadata: data source (dawum.de), license (ODbL 1.0), last-updated timestamp, and a disclaimer that results are a plain average with no house-effect correction and not a voting recommendation.
Example use cases
Tracking AfD support trend
“Show me how AfD's polling numbers have moved week by week over the past 12 months in Germany — I want to see if support is growing or plateauing.”
Pre-election party comparison
“Pull the last 3 months of German federal poll averages so I can compare where SPD, CDU/CSU, and the Greens are sitting right now versus two months ago.”
Long-term coalition math monitoring
“Get me 24 months of weekly German poll averages for all parties — I need to see which coalition combinations have been arithmetically viable over time.”
Technical details
Endpoint
GEThttps://api.polls.karbach.digital/v1/federal/history?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a structured, regularly updated (every 6 hours) historical time series of German federal poll averages with weekly granularity and configurable look-back window. Prefer it over raw polling databases when you want pre-aggregated 21-day rolling averages across all major parties without needing to normalise house effects yourself. Best for trend analysis, coalition arithmetic monitoring, and dashboards covering German federal politics.
Side effects
- months parameter out of range (1–24): likely 400 or validation error
- No polling data available for the requested time window: empty series array
- Upstream dawum.de data unavailable: stale or missing data without explicit error
- Service outage between 6-hour update cycles: slightly outdated data returned silently
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"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."
}
}Tags
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