{"id":"6fc9504e-7754-41f2-8daf-afd6da15ef73","shortId":"ucPWTw","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/63`. 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/crypto data feeds, and infrastructure utilities, all priced uniformly at $0.02 per request. However, this specific listing covers the KYC verifications endpoint. The endpoint accepts POST requests and returns JSON.\n\nDocumentation is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what input the KYC endpoint expects or what its response looks like. The endpoint is confirmed live (returns a proper 402 x402 challenge), but without documentation it is unclear what request body fields are required or what verification data is returned.","tags":[],"capabilities":["kyc-verification","x402-payment","usdc-settlement","base-network","per-call-pricing","no-api-key","post-endpoint"],"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 content.","No OpenAPI or request/response schema provided; request body and response format are unknown.","The specific purpose of '/api/v1/kyc/verifications/63' (the '63' path segment) is unexplained — it may refer to a specific verification record rather than a general endpoint.","KYC/identity verification is a regulated category; no compliance certifications or data handling policies are documented."],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/63","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/63","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, confirming it exists and accepts USDC on Base at $0.02/call. However, there is zero documentation on request format, response schema, or what the KYC verification actually does. No OpenAPI spec, no examples, and all doc pages are empty. This is effectively a stub 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'0.02':59,128 '000':61 '20':60 '402':202 '6':67 'ID verification' 'KYC API' 'accept':48,142 'access':39,92 'advertis':99 'ai/ml':111 'analysi':114 'analyt':110 'api':70,107,154 'attach':79 'base':5,18,52,62 'base-network' 'bodi':213 'broader':96 'call':9,22,106 'caller':77 'challeng':204 'classif':116 'compliance check' 'confirm':197 'connect':163 'content':169 'cover':135 'custom':36 'data':109,119,220 'decim':68 'descript':180 'doc':153 'document':148,207 'embed':117 'endpoint':3,16,28,94,139,141,186,195 'exampl':177 'expect':187 'extrem':150 'feed':120 'field':214 'finance/crypto':118 'header':84 'howev':131 'identity verification' 'infer':112 'infrastructur':122 'input':183 'json':147 'key':71 'know':34 'know your customer' 'kyc':1,14,33,137,185 'kyc-verification' 'like':193 'limit':74 'list':134 'live':198 'look':192 'lowpaymentfee.com':30,97 'network':53 'no-api-key' 'openapi':173 'page':158 'paid':6,19 'pay':104 'pay-per-cal':103 'pay-per-call KYC' 'payment':46,83,89 'per':8,21,56,105,129 'per-cal':7,20 'per-call-pricing' 'platform':98 'post':143 'post-endpoint' 'price':55,125,155 'prompt':165 'proof':90 'proper':201 'protocol':47 'provid':31 'rang':101 'rate':73 'readm':157 'render':160 'request':57,130,144,212 'request/response':176 'requir':76,216 'respons':191 'return':146,199,222 'schema':174 'sentiment':113 'servic':38 'simpli':78 'span':108 'spars':151 'specif':133 'substant':168 'summar':115 'unclear':210 'uniform':126 'unit':63 'usdc':13,26,49,65 'usdc-settlement' 'use':43 'util':123 'valid':87 'verif':2,15,37,138,219 'via':10,23 'wallet':164 'without':206 'x':82 'x-payment':81 'x402':11,24,45,88,203 'x402 KYC' 'x402-payment'","prices":[{"id":"b5dab892-9938-4a1e-8810-6fae765efc39","listingId":"6fc9504e-7754-41f2-8daf-afd6da15ef73","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/63","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:14.961Z"}],"sources":[{"listingId":"6fc9504e-7754-41f2-8daf-afd6da15ef73","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/63","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:14.961Z","lastSeenAt":"2026-04-22T01:01:05.620Z"}],"details":{"listingId":"6fc9504e-7754-41f2-8daf-afd6da15ef73","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/63 \\\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":"Endpoint returns a valid x402 402 challenge with USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/63"},{"claim":"Price is $0.02 per request (maxAmountRequired 20000 base units, USDC 6 decimals)","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/63"},{"claim":"Platform advertises uniform $0.02/request pricing with no API keys, no rate limits","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/63"}],"useCases":["Verifying customer identity as part of onboarding flows","Compliance checks for financial or Web3 applications","Agent-driven KYC lookups without managing API keys","Programmatic identity verification with crypto micropayments"],"bestFor":["Developers needing simple pay-per-call KYC without subscriptions","Web3 applications requiring on-chain-settled identity checks","AI agents that need to perform compliance verification autonomously"],"notFor":["High-volume KYC pipelines requiring bulk pricing or SLAs","Users who need detailed documentation or integration support before committing","Regulated environments requiring auditable vendor certifications"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:16.2Z"},"updatedAt":"2026-04-22T01:01:05.620Z"}}