{"id":"c2ae5834-31c3-42da-823f-aba062d5f44d","shortId":"3acSFr","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 at `/api/v1/kyc/verifications/51`. It uses the x402 payment protocol, accepting USDC on the Base network. Each call costs $0.02 (20,000 base units of USDC with 6 decimals). The endpoint accepts POST requests and returns JSON.\n\nThe broader lowpaymentfee.com platform advertises a range of pay-per-request APIs spanning data & analytics, AI/ML (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02/request pricing with no API keys, no rate limits, and no commitments required — payment is handled entirely through the x402 protocol.\n\nNote that the specific KYC verification endpoint listed here (`/verifications/51`) is not explicitly documented on the provider's landing page, which focuses on analytics, AI, finance, and utility endpoints. No request/response schema documentation was found for this or any other endpoint on the site. The docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further content, so the actual input parameters and response format for this KYC endpoint remain unknown.","tags":[],"capabilities":["kyc-verification","x402-payment","usdc-base","pay-per-request","post-json"],"categories":["identity","compliance"],"synonyms":["KYC API","identity verification","know your customer","compliance check","ID verification","x402 KYC","Base USDC API"],"warnings":["The KYC verification endpoint is not listed on the provider's own landing page; only analytics, AI, finance, and utility APIs are advertised.","No request or response schema documentation exists for this endpoint.","The docs, pricing, and API pages render only 'Connect wallet' with no usable content.","KYC/identity verification is a regulated category — no information about compliance certifications, data handling, or jurisdictional coverage is provided.","The path includes a hardcoded ID (51), suggesting this may be a specific verification record rather than a general-purpose endpoint."],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/51","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/51","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (returns a valid 402 x402 challenge), but there is no documentation for the KYC verification endpoint — no request schema, no response schema, no examples. The docs/pricing/API pages are empty beyond a wallet-connect prompt. The specific path `/api/v1/kyc/verifications/51` is not listed on the provider's own landing page. This is effectively a stub 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'/request':120 '/verifications/51':150 '0.02':57,119 '000':59 '20':58 '6':65 'Base USDC API' 'ID verification' 'KYC API' 'accept':48,69 'access':39 'actual':204 'advertis':79 'ai':165 'ai/ml':91 'analysi':93 'analyt':90,164 'api':87,124,189 'base':5,18,52,60 'broader':76 'call':9,22,55 'classif':95 'commit':131 'compliance check' 'connect':195 'content':201 'convers':112 'cost':56 'custom':36 'data':89 'decim':66 'doc':186 'document':154,173 'embed':96 'endpoint':3,16,28,68,115,147,169,181,213 'entir':136 'estim':106 'exchang':101 'explicit':153 'feed':100 'financ':97,166 'focus':162 'format':209 'found':175 'gas':105 'generat':113 'geocod':110 'handl':135 'identity verification' 'infrastructur':108 'input':205 'json':74 'key':125 'know':34 'know your customer' 'kyc':1,14,33,145,212 'kyc-verification' 'land':159 'limit':128 'list':148 'lowpaymentfee.com':30,77 'network':53 'note':141 'page':160,190 'paramet':206 'pay':7,20,84 'pay-per-cal':6,19 'pay-per-request':83 'payment':46,133 'per':8,21,85 'platform':78 'post':70 'post-json' 'price':99,121,187 'prompt':197 'protocol':47,140 'provid':31,157 'quot':104 'rang':81 'rate':102,127 'remain':214 'render':192 'request':71,86 'request/response':171 'requir':132 'respons':208 'return':73 'schema':172 'sentiment':92 'servic':38 'share':116 'site':184 'span':88 'specif':144 'summar':94 'token':103 'unit':61 'unknown':215 'usdc':13,26,49,63 'usdc-base' 'use':43 'util':109,168 'valid':111 'verif':2,15,37,146 'via':10,23 'wallet':196 'web3':98 'x402':11,24,45,139 'x402 KYC' 'x402-payment'","prices":[{"id":"0afe4f8f-d0c5-4bc6-8054-e262e92194d4","listingId":"c2ae5834-31c3-42da-823f-aba062d5f44d","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/51","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:15.595Z"}],"sources":[{"listingId":"c2ae5834-31c3-42da-823f-aba062d5f44d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/51","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:15.595Z","lastSeenAt":"2026-04-22T01:01:05.659Z"}],"details":{"listingId":"c2ae5834-31c3-42da-823f-aba062d5f44d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/51 \\\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 x402 challenge with maxAmountRequired of 20000 in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/51"},{"claim":"All endpoints are priced at $0.02/request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The landing page lists analytics, AI/ML, finance/Web3, and infrastructure APIs but does not list KYC endpoints","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, pricing, and API pages show only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Verifying customer identity as part of onboarding flows","Compliance checks for financial or Web3 applications","Automated KYC screening triggered by agent workflows"],"bestFor":["Developers needing pay-per-call KYC without API key management","Agent-driven identity verification with crypto payment","Low-volume or sporadic KYC checks where subscriptions are wasteful"],"notFor":["High-volume KYC pipelines requiring SLAs and guaranteed uptime","Use cases requiring detailed documentation or certified compliance standards","Users who cannot pay with USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:16.201Z"},"updatedAt":"2026-04-22T01:01:05.659Z"}}