{"id":"765deb23-560c-4547-a66a-67f735bca966","shortId":"DdKhes","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 at `/api/v1/kyc/verifications/69`. It uses the x402 payment protocol, accepting USDC on the Base network. The price per request is $0.02 (20,000 base units of USDC with 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof to access the endpoint.\n\nThe broader lowpaymentfee.com platform advertises a range of pay-per-call 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 and settle on the Base network using USDC.\n\nDocumentation is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. 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 specific semantics of the `/69` path segment (whether it's a resource ID, a verification type, etc.) are not documented. Prospective users should be aware that the actual functionality behind this endpoint is unverified beyond the x402 challenge.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","kyc-verification","pay-per-call","no-api-key"],"categories":["identity","compliance"],"synonyms":["KYC API","identity verification","know your customer","x402 KYC","USDC micropayment API","Base network API","compliance check"],"warnings":["No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'","No OpenAPI or request/response schema provided","The specific meaning of '/verifications/69' is undocumented","Actual KYC verification functionality is unverified — only the payment challenge is confirmed","This endpoint may handle regulated personal data (KYC/identity); compliance and data handling policies are not documented"],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/69","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/69","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The x402 challenge is live and confirms pricing and network, but there is zero documentation on request/response schemas, no OpenAPI spec, and the docs pages are empty. The actual functionality of this KYC endpoint is unverifiable from available 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'/api/v1/kyc/verifications/69':41 '0.02':59,140 '000':61 '20':60 '6':67 'Base network API' 'KYC API' 'USDC micropayment API' 'accept':48 'access':39,92 'actual':224 'advertis':99 'ai/ml':111 'analysi':114 'analyt':110 'api':70,107,157 'attach':79 'awar':221 'base':5,18,52,62,147 'base-network' 'behind':226 'beyond':231 'broader':96 'call':9,22,106 'caller':77 'challeng':234 'classif':116 'compliance check' 'connect':166 'content':172 'convers':133 'custom':36 'data':109,119 'decim':68 'descript':183 'doc':156 'document':151,216 'embed':117 'endpoint':3,16,28,94,136,190,228 'estim':127 'etc':213 'exampl':180 'exchang':122 'expect':191 'extrem':153 'feed':121 'finance/web3':118 'function':225 'gas':126 'generat':134 'geocod':131 'header':84 'id':209 'identity verification' 'infer':112 'infrastructur':129 'input':186 'key':71 'know':34 'know your customer' 'kyc':1,14,33,188 'kyc-verification' 'limit':74 'list':138 'lowpaymentfee.com':30,97 'network':53,148 'no-api-key' 'openapi':176 'page':161 'paid':6,19 'path':202 'pay':104 'pay-per-cal':103 'pay-per-call' 'payment':46,83,89 'per':8,21,56,105,141 'per-cal':7,20 'platform':98 'price':55,120,158 'prompt':168 'proof':90 'prospect':217 'protocol':47 'provid':31 'quot':125 'rang':101 'rate':73,123 'readm':160 'render':163 'request':57,142 'request/response':179 'requir':76 'resourc':208 'return':195 'schema':177 'segment':203 'semant':198 'sentiment':113 'servic':38 'settl':144 'simpli':78 'span':108 'spars':154 'specif':197 'summar':115 'token':124 'type':212 'unit':63 'unverifi':230 'usdc':13,26,49,65,150 'usdc-settlement' 'use':43,149 'user':218 'util':130 'valid':87,132 'verif':2,15,37,189,211 'via':10,23 'wallet':167 'whether':204 'x':82 'x-payment':81 'x402':11,24,45,88,233 'x402 KYC' 'x402-payment'","prices":[{"id":"1fba8877-f3ba-43b7-9b6e-d6a18185bbca","listingId":"765deb23-560c-4547-a66a-67f735bca966","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/69","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:08.399Z"}],"sources":[{"listingId":"765deb23-560c-4547-a66a-67f735bca966","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/69","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:08.399Z","lastSeenAt":"2026-04-22T04:01:35.353Z"}],"details":{"listingId":"765deb23-560c-4547-a66a-67f735bca966","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/69 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\" \\\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 x402 challenge accepting USDC on Base with maxAmountRequired of 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/69"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/69"},{"claim":"Docs, API, pricing, and README pages render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Verifying customer identity as part of onboarding flows","Integrating KYC checks into Web3 dApps without managing API keys","Automating compliance verification with per-call USDC payments"],"bestFor":["Developers needing pay-per-use KYC without subscription commitments","Web3 applications that can settle payments on Base with USDC","Agents or bots that need programmatic identity verification via x402"],"notFor":["Teams requiring detailed API documentation and SLAs before integration","High-volume KYC pipelines where per-call pricing may not be cost-effective","Users who cannot transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:16.554Z"},"updatedAt":"2026-04-22T04:01:35.353Z"}}