{"id":"09f7e127-7a82-4f78-82a3-8d3d592c484b","shortId":"FPxnSf","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/25`. 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 resource.\n\nThe broader lowpaymentfee.com platform offers a suite 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 priced 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 the KYC verification endpoint expects as input or returns as output. The endpoint is live (returns a proper 402 challenge), but the lack of documentation makes it difficult to use without experimentation.","tags":[],"capabilities":["kyc-verification","x402-payment","usdc-settlement","base-network","pay-per-call","no-api-key","identity-verification"],"categories":["identity","compliance"],"synonyms":["KYC API","identity verification","know your customer","compliance check","ID verification","x402 KYC","USDC pay-per-call"],"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; input and output formats are unknown.","The path segment '/25' in the endpoint URL is unexplained — it may refer to a specific verification type or record ID.","KYC/identity verification is a regulated category; verify the provider's compliance posture before relying on this service.","The endpoint description 'Premium API Access' is generic and does not describe the actual KYC functionality."],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/25","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/25","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 on request format, response schema, or what the KYC verification actually checks. No OpenAPI spec, no examples, and all doc pages are empty. The specific path segment '/25' is unexplained. This is effectively a stub 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'0.02':59,140 '000':61 '20':60 '402':204 '6':67 'ID verification' 'KYC API' 'USDC pay-per-call' 'accept':48 'access':39,92 'ai/ml':111 'analysi':114 'analyt':110 'api':70,107,157 'attach':79 'base':5,18,52,62,147 'base-network' 'broader':96 'call':9,22,106 'caller':77 'challeng':205 'classif':116 'compliance check' 'connect':166 'content':172 'convers':133 'custom':36 'data':109,119 'decim':68 'descript':183 'difficult':213 'doc':156 'document':151,210 'embed':117 'endpoint':3,16,28,136,189,198 'estim':127 'exampl':180 'exchang':122 'expect':190 'experiment':217 'extrem':153 'feed':121 'finance/web3':118 'gas':126 'generat':134 'geocod':131 'header':84 'identity verification' 'identity-verification' 'infer':112 'infrastructur':129 'input':192 'key':71 'know':34 'know your customer' 'kyc':1,14,33,187 'kyc-verification' 'lack':208 'limit':74 'live':200 'lowpaymentfee.com':30,97 'make':211 'network':53,148 'no-api-key' 'offer':99 'openapi':176 'output':196 'page':161 'paid':6,19 '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':55,120,138,158 'prompt':168 'proof':90 'proper':203 'protocol':47 'provid':31 'quot':125 'rate':73,123 'readm':160 'render':163 'request':57,142 'request/response':179 'requir':76 'resourc':94 'return':194,201 'schema':177 'sentiment':113 'servic':38 'settl':144 'simpli':78 'span':108 'spars':154 'suit':101 'summar':115 'token':124 'unit':63 'usdc':13,26,49,65,150 'usdc-settlement' 'use':43,149,215 'util':130 'valid':87,132 'verif':2,15,37,188 'via':10,23 'wallet':167 'without':216 'x':82 'x-payment':81 'x402':11,24,45,88 'x402 KYC' 'x402-payment'","prices":[{"id":"ccb597a5-7d00-4802-a6cb-6ee322f2dc3e","listingId":"09f7e127-7a82-4f78-82a3-8d3d592c484b","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/25","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:05.985Z"}],"sources":[{"listingId":"09f7e127-7a82-4f78-82a3-8d3d592c484b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/25","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:05.985Z","lastSeenAt":"2026-04-22T04:01:35.261Z"}],"details":{"listingId":"09f7e127-7a82-4f78-82a3-8d3d592c484b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/25 \\\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 challenge with x402Version 1, accepting USDC on Base network with maxAmountRequired of 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/25"},{"claim":"All endpoints on the platform 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":"The USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/25"},{"claim":"Docs, API, pricing, and README pages render only 'Connect wallet' with no additional content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Verifying customer identity as part of onboarding flows","Compliance checks for financial or regulated services","Automated KYC screening in Web3 applications"],"bestFor":["Developers needing on-demand KYC verification without subscription commitments","Web3 projects requiring pay-per-call identity checks settled in USDC","Agents that can handle x402 payment challenges natively"],"notFor":["Users who need detailed API documentation before integrating","Batch or bulk KYC processing with volume discounts","Applications requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:16.677Z"},"updatedAt":"2026-04-22T04:01:35.261Z"}}