{"id":"3b6bb530-1fa2-4454-a722-5ab709ed22b6","shortId":"W34XTG","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/56` accepts POST requests and charges up to $0.02 per call in USDC on the Base network. Payment is handled inline via the x402 header mechanism — no API keys, accounts, or rate limits are required.\n\nThe hosting site lowpaymentfee.com offers a broad catalog of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities, all priced at $0.02 per request. However, the specific KYC verification endpoint's input schema and response format are not documented in the crawled material. The endpoint is confirmed live (returns a proper 402 challenge), but without documentation on what fields to POST or what the verification response contains, integration requires experimentation or additional documentation not currently available.\n\nThe payment settles to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on Base. The maximum timeout for payment confirmation is 300 seconds.","tags":[],"capabilities":["kyc-verification","x402-payment","usdc-base","pay-per-request","no-api-key"],"categories":["identity","compliance"],"synonyms":["KYC check","identity verification","know your customer","AML verification","ID verification","customer verification","compliance check"],"warnings":["No documentation available for the KYC verification endpoint — request body fields and response schema are unknown.","The '/56' path segment suggests a specific verification resource ID, but its meaning is undocumented.","The site's docs, pricing, and API pages all return only a 'Connect wallet' prompt with no technical content.","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/56","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/56","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 challenge, confirming pricing and payment details. However, there is no documentation on the request body schema, response format, or what 'verifications/56' specifically verifies. The docs, pricing, and API pages on the site all render only a wallet-connect prompt with no useful content. This is effectively a stub 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'0.02':56,110 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':170 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':174 '300':184 '402':140 'AML verification' 'ID verification' 'KYC check' 'accept':49 'access':39 'account':77 'addit':160 'address':169 'ai/ml':100 'analyt':99 'api':75,96 'avail':164 'base':5,18,63,176 'broad':89 'call':9,22,58 'catalog':90 'challeng':141 'charg':53 'compliance check' 'confirm':135,182 'contain':155 'contract':173 'crawl':130 'current':163 'custom':36 'customer verification' 'data':98,103 'document':127,144,161 'endpoint':3,16,28,118,133 'experiment':158 'field':147 'finance/web3':102 'format':124 'handl':67 'header':72 'host':84 'howev':113 'identity verification' 'infer':101 'infrastructur':105 'inlin':68 'input':120 'integr':156 'key':76 'know':34 'know your customer' 'kyc':1,14,33,116 'kyc-verification' 'limit':80 'live':136 'lowpaymentfee.com':30,86 'materi':131 'maximum':178 'mechan':73 'network':64 'no-api-key' 'offer':87 'pay':7,20,93 'pay-per-cal':6,19 'pay-per-request':92 'payment':43,65,166,181 'per':8,21,57,94,111 'post':50,149 'price':108 'proper':139 'protocol':44 'provid':31 'rate':79 'request':51,95,112 'requir':82,157 'resourc':47 'respons':123,154 'return':137 'schema':121 'second':185 'servic':38 'settl':167 'site':85 'span':97 'specif':46,115 'timeout':179 'usdc':13,26,60,172 'usdc-base' 'use':171 'util':106 'verif':2,15,37,117,153 'via':10,23,40,69 'without':143 'x402':11,24,42,71 'x402-payment'","prices":[{"id":"24504c3c-369e-4e2e-92ab-9dcbfc6c7d3b","listingId":"3b6bb530-1fa2-4454-a722-5ab709ed22b6","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/56","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:17.375Z"}],"sources":[{"listingId":"3b6bb530-1fa2-4454-a722-5ab709ed22b6","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/56","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:17.375Z","lastSeenAt":"2026-04-22T01:01:05.741Z"}],"details":{"listingId":"3b6bb530-1fa2-4454-a722-5ab709ed22b6","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/56 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\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","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/56"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 with 6 decimals, so 20000 base units = $0.02","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/56"},{"claim":"All APIs on the site 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":"Payment settles to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/56"}],"useCases":["Verifying customer identity as part of onboarding flows","Automated KYC checks for fintech or Web3 applications","Agent-driven compliance verification without pre-registration","Pay-per-use identity verification for low-volume or bursty workloads"],"bestFor":["Developers needing KYC without subscription commitments","Crypto-native applications that can pay with USDC on Base","Agents or bots that need programmatic identity verification"],"notFor":["High-volume KYC pipelines where per-call pricing is expensive at scale","Use cases requiring detailed documentation or SLA guarantees","Applications that cannot settle payments on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:16.103Z"},"updatedAt":"2026-04-22T01:01:05.741Z"}}