{"uid":"cap_f5BoJRPBLV7uzXWKEzgTV","slug":"polls-karbach-digital-bundestag-constituency-by-postcode-c3d4f025","name":"polls.karbach.digital – Bundestag Constituency by Postcode","description":"Which Bundestag constituency a German postcode belongs to. Use when you have a German postcode and need the constituency. Source-attributed. Refused (503, not charged) if data is older than 13 hours.","url":"https://api.polls.karbach.digital/v1/constituencies/by-postcode/:plz?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"pathParams":{"type":"object","required":["plz"],"properties":{"plz":{"type":"string","pattern":"^\\d{5}$","description":"German postcode"}}},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_thMuBLY1Yc3dmh3d1iPMc","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the Bundestag (federal parliamentary) constituency that a given 5-digit German postcode belongs to, with source attribution, updated every six hours.","exampleAgentPrompt":"Which Bundestag constituency does postcode 10117 belong to?","exampleUseCases":[{"title":"Voter constituency lookup tool","prompt":"I live at a postcode in Munich — 80331 — and want to know which Bundestag constituency I'm in so I can look up my local candidates."},{"title":"Journalism research for election coverage","prompt":"We're covering the federal election and need to know which Wahlkreis postcode 22767 (Hamburg) maps to so we can pull the right constituency results."},{"title":"Constituent contact app enrichment","prompt":"We're building an app that helps people contact their Bundestag representative. Given the user's postcode 50667, which constituency number and name should we assign them?"}],"resultDescription":"Returns the Bundestag constituency (Wahlkreis) name and number corresponding to the provided 5-digit German postcode, along with source attribution. Data is refreshed every six hours from German official sources.","failureModes":["Invalid postcode format (not exactly 5 digits) — validation error returned","Postcode does not exist or is not assigned to a constituency — not found response","Transient upstream data unavailability — service error"],"whenToPreferThis":"Use this endpoint when you have a 5-digit German postcode and need to identify the corresponding Bundestag (federal) constituency (Wahlkreis). It is the right choice for voter-facing tools, election journalism, political data enrichment, and any application that needs to bridge a German address or postcode to federal election geography. Prefer it over manual lookup tables because it is source-attributed and updated every six hours.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-28T12:38:53.448Z","isFirstParty":false,"canonicalSlug":"polls-karbach-digital-bundestag-constituency-by-postcode-c3d4f025"}