{"id":"89c45e40-7eef-45ca-8f25-6be1a30bcacd","shortId":"9yPBRW","kind":"x402","title":"KYC verification endpoint on Base, paid per-call via x402 with USDC.","tagline":"KYC verification endpoint on Base, paid per-call via x402 with USDC.","description":"This endpoint at lowpaymentfee.com provides a KYC (Know Your Customer) verification service accessible via the x402 payment protocol. The specific resource `/api/v1/kyc/verifications/42` accepts POST requests and charges up to $0.02 per call in USDC on the Base network. No API keys or rate limits are required — callers simply attach an x402 payment header to each request.\n\nThe provider hosts a broader suite of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/crypto market data, and infrastructure utilities, all priced at $0.02 per request. However, this specific listing covers the KYC verification endpoint. Documentation beyond the landing page is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what input the KYC endpoint expects or what output it returns. The endpoint is confirmed live (returns a valid x402 402 challenge), but the lack of documentation makes integration difficult without experimentation.","tags":[],"capabilities":["kyc-verification","x402-payment","usdc-settlement","base-network","per-call-pricing","no-api-key"],"categories":["identity","compliance"],"synonyms":["KYC API","identity verification","know your customer","compliance check","ID verification","x402 KYC","pay-per-call KYC"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no technical content.","No OpenAPI or schema describing request body or response format for the KYC endpoint.","The endpoint path includes a hardcoded ID '/42' — it is unclear whether this is parameterized or fixed.","KYC/identity verification is a regulated category; no information is provided about the verification methodology, data handling, or compliance certifications.","The provider lists many API categories on the landing page but none appear to include KYC, raising questions about this endpoint's maturity."],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/42","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/kyc/verifications/42","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI schema, no request/response examples, and no meaningful documentation. The KYC endpoint's purpose is only inferable from the URL path; input/output formats are completely 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'0.02':56,114 '402':185 'ID verification' 'KYC API' 'accept':49 'access':39 'ai/ml':98 'analysi':101 'analyt':97 'api':66,94,136 'attach':75 'base':5,18,63 'base-network' 'beyond':127 'broader':87 'call':9,22,58,93 'caller':73 'challeng':186 'charg':53 'classif':103 'compliance check' 'confirm':179 'connect':145 'cover':121 'custom':36 'data':96,107 'descript':163 'detail':152 'difficult':194 'doc':135 'document':126,191 'embed':104 'endpoint':3,16,28,125,169,177 'exampl':160 'expect':170 'experiment':196 'extrem':132 'finance/crypto':105 'header':79 'host':85 'howev':117 'identity verification' 'infer':99 'infrastructur':109 'input':166 'integr':193 'key':67 'know':34 'know your customer' 'kyc':1,14,33,123,168 'kyc-verification' 'lack':189 'land':129 'limit':70 'list':120 'live':180 'lowpaymentfee.com':30 'make':192 'market':106 'network':64 'no-api-key' 'openapi':156 'output':173 'page':130,140 'paid':6,19 'pay':91 'pay-per-cal':90 'pay-per-call KYC' 'payment':43,78 'per':8,21,57,92,115 'per-cal':7,20 'per-call-pricing' 'post':50 'price':112,137 'prompt':147 'protocol':44 'provid':31,84 'rate':69 'readm':139 'render':142 'request':51,82,116 'request/response':159 'requir':72 'resourc':47 'return':175,181 'schema':157 'sentiment':100 'servic':38 'simpli':74 'span':95 'spars':133 'specif':46,119 'suit':88 'summar':102 'technic':151 'usdc':13,26,60 'usdc-settlement' 'util':110 'valid':183 'verif':2,15,37,124 'via':10,23,40 'wallet':146 'without':195 'x402':11,24,42,77,184 'x402 KYC' 'x402-payment'","prices":[{"id":"729f46f4-8296-4159-91fd-89747094f68f","listingId":"89c45e40-7eef-45ca-8f25-6be1a30bcacd","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/kyc/verifications/42","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:46:59.934Z"}],"sources":[{"listingId":"89c45e40-7eef-45ca-8f25-6be1a30bcacd","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/42","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:59.934Z","lastSeenAt":"2026-04-22T05:31:08.236Z"}],"details":{"listingId":"89c45e40-7eef-45ca-8f25-6be1a30bcacd","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/42 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/42"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/42"},{"claim":"All APIs priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, API, pricing, and README pages render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Verifying customer identity as part of onboarding flows","Compliance checks for financial or Web3 applications","Automated KYC screening triggered by agent workflows"],"bestFor":["Developers needing keyless, pay-per-call KYC verification","Web3 applications that can settle micropayments in USDC on Base","Agents that need on-demand identity checks without subscription commitments"],"notFor":["Teams requiring detailed API documentation and integration guides before adoption","High-volume KYC pipelines needing batch processing or bulk discounts","Regulated environments that require a well-documented audit trail of the verification methodology"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:16.94Z"},"updatedAt":"2026-04-22T05:31:08.236Z"}}