{"id":"7a901f8e-a6e7-459d-830c-1c9238b02837","shortId":"5VfGVw","kind":"x402","title":"KYC verification endpoint on Base, pay-per-call via x402 with USDC.","tagline":"KYC verification endpoint on Base, pay-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/22` 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 broader lowpaymentfee.com platform advertises a suite of pay-per-request APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/Web3 data (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with the same x402 payment model on Base.\n\nHowever, documentation 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 verification endpoint expects or what it returns. The endpoint is confirmed live (returns a proper 402 challenge), but without documentation it is unclear what payload to send or what verification data is returned.","tags":[],"capabilities":["kyc-verification","x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key"],"categories":["identity","compliance"],"synonyms":["KYC API","identity verification","know your customer","KYC check","identity validation","compliance verification","x402 KYC"],"warnings":["No API documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content.","No request or response schema provided; it is unknown what payload the KYC endpoint expects.","The specific resource path '/api/v1/kyc/verifications/22' suggests a hardcoded verification ID; unclear if this is a demo or production resource.","KYC/identity verification is a regulated category — verify the provider's compliance posture before relying on this for production use."],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/22","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/22","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 402 challenge, but there is zero documentation: no OpenAPI schema, no request/response examples, no description of what the KYC verification endpoint accepts or returns. Docs pages are empty. This is effectively a stub 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'0.02':56,128 '402':194 'KYC API' 'KYC check' 'accept':49 'access':39 'advertis':87 'ai/ml':99 'analysi':102 'analyt':98 'api':66,95,146 'attach':75 'base':5,18,63,138 'base-network' 'broader':84 'call':9,22,58 'caller':73 'challeng':195 'charg':53 'classif':104 'compliance verification' 'confirm':189 'connect':155 'convers':121 'custom':36 'data':97,107,209 'descript':173 'detail':162 'doc':145 'document':140,198 'embed':105 'endpoint':3,16,28,124,180,187 'estim':115 'exampl':170 'exchang':110 'expect':181 'extrem':142 'feed':109 'finance/web3':106 'gas':114 'generat':122 'geocod':119 'header':79 'howev':139 'identity validation' 'identity verification' 'infer':100 'infrastructur':117 'input':176 'key':67 'know':34 'know your customer' 'kyc':1,14,33,178 'kyc-verification' 'limit':70 'list':126 'live':190 'lowpaymentfee.com':30,85 'model':136 'network':64 'no-api-key' 'openapi':166 'page':150 'pay':7,20,92 'pay-per-cal':6,19 'pay-per-request':91 'payload':203 'payment':43,78,135 'per':8,21,57,93,129 'platform':86 'post':50 'price':108,147 'prompt':157 'proper':193 'protocol':44 'provid':31 'quot':113 'rate':69,111 'readm':149 'render':152 'request':51,82,94,130 'request/response':169 'requir':72 'resourc':47 'return':185,191,211 'schema':167 'send':205 'sentiment':101 'servic':38 'simpli':74 'span':96 'spars':143 'specif':46 'suit':89 'summar':103 'technic':161 'token':112 'unclear':201 'usdc':13,26,60 'usdc-settlement' 'util':118 'valid':120 'verif':2,15,37,179,208 'via':10,23,40 'wallet':156 'without':197 'x402':11,24,42,77,134 'x402 KYC' 'x402-payment'","prices":[{"id":"d2f5752c-8320-4a05-b5e7-0a980e351110","listingId":"7a901f8e-a6e7-459d-830c-1c9238b02837","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/22","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:46:59.330Z"}],"sources":[{"listingId":"7a901f8e-a6e7-459d-830c-1c9238b02837","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/22","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:59.330Z","lastSeenAt":"2026-04-22T07:31:10.868Z"}],"details":{"listingId":"7a901f8e-a6e7-459d-830c-1c9238b02837","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/22 \\\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 402 challenge with maxAmountRequired of 20000 base units of USDC on Base (i.e., $0.02).","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/22"},{"claim":"The platform lists all APIs at $0.02 per request with no API keys, no rate limits, and instant access on the Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base.","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/22"},{"claim":"Docs, API, pricing, and README pages render only a 'Connect wallet' prompt 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 verification without managing API keys"],"bestFor":["Developers needing pay-per-call KYC verification without subscriptions","Web3 applications that already settle on Base with USDC","Agents that can attach x402 payment headers for frictionless access"],"notFor":["Users who need detailed API documentation before integrating","High-volume KYC workflows requiring bulk pricing or SLAs","Applications requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:17.008Z"},"updatedAt":"2026-04-22T07:31:10.868Z"}}