{"uid":"cap_HdIdQk0QeH45Ew80wsyXz","slug":"korean-business-registration-status-lookup-nts-via-x402-9616013a","name":"Korean Business Registration Status Lookup (NTS via x402)","description":"Call to check Korea NTS businessman open/closed + tax type JSON (휴폐업/과세유형). Official data.go.kr. Not a people search. Not tax advice.","url":"https://x402-research.kgy5612.workers.dev/kr-biz-status","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"b_no":{"oneOf":[{"type":"string"},{"type":"array","items":{"type":"string"}}],"description":"Required. One 10-digit Korean business registration number, or an array (max 5). Hyphens OK."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_b-LXGRqQ-cEWvIJPYoSt-","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up Korean business registration status and tax type for one or more 10-digit business registration numbers via the National Tax Service (NTS) dataset, paid per-call with USDC on Base.","exampleAgentPrompt":"Can you check the Korean business registration status for company number 123-45-67890 — I need to know if they're still active and what tax type they're classified under before I wire them payment?","exampleUseCases":[{"title":"Vendor due diligence before payment","prompt":"Before I transfer funds to this Korean supplier, can you check their business registration number 214-87-12345 to confirm they're still an active registered business and not closed?"},{"title":"Onboarding KYB check for Korean merchant","prompt":"We're onboarding a new Korean merchant with business registration number 101-81-99999 — can you verify their NTS registration status and tax classification so we can approve their account?"},{"title":"Batch validation of Korean partner list","prompt":"I have three Korean business registration numbers — 123-45-67890, 234-56-78901, and 345-67-89012 — can you check all of them at once to see which ones are still active and what tax type each one is?"}],"resultDescription":"Returns a JSON object with an as-of date and an array of items, one per queried business number, each containing the business status in Korean (e.g. 계속사업자 = ongoing), a status code, tax type label and code, closure date if applicable, and unit consumer credit indicator. Also includes source metadata referencing the NTS dataset on data.go.kr and a caveat that results are not tax advice.","failureModes":["Invalid or malformed business registration number returns an error or empty result","More than 5 numbers submitted at once may be rejected","Payment failure via x402/USDC on Base blocks the request entirely","NTS upstream data may be stale — as-of date may lag real-time changes","Non-Korean (non-10-digit) registration numbers will not match any record","Network timeout from the Cloudflare Worker or upstream data.go.kr API"],"whenToPreferThis":"Use this endpoint when you need to verify the active registration status or tax classification of Korean businesses by their 사업자등록번호 (business registration number) and want a pay-per-call model with no subscription — especially for due diligence, KYB onboarding, or supplier verification workflows. It supports batch lookups of up to 5 numbers per call, making it efficient for small-batch checks. Prefer this over scraping NTS directly or managing API keys for data.go.kr.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:30:38.727Z","isFirstParty":false}