{"id":"372ab6fe-c88a-4974-a9f8-2cc7dd239c7f","shortId":"2rYFkC","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/43` accepts POST requests and charges up to $0.02 per call in USDC on the Base network. No API keys or rate limits are required — callers simply attach an x402 payment header to each request.\n\nThe hosting site lowpaymentfee.com offers a broad catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities, all priced at $0.02 per request. However, this specific endpoint is in the KYC/verifications category, which is not prominently listed on the site's landing page. The crawled documentation pages (docs, pricing, README) returned only a \"Connect wallet\" prompt with no further detail, so the exact request schema, required fields, and response format for this KYC verification endpoint are unknown.\n\nBecause the endpoint returned a valid 402 challenge with x402 version 1, it is confirmed live. The payment is settled in USDC (contract 0x8335…2913) on Base to address 0x1A2B…85F3, with a maximum timeout of 300 seconds. Without documentation on what input the POST body expects or what the verification response contains, agents should treat this as a stub listing until more information becomes available.","tags":[],"capabilities":["kyc-verification","x402-payment","usdc-settlement","base-network","pay-per-call","no-api-key"],"categories":["identity","compliance"],"synonyms":["KYC check","identity verification","know your customer","ID verification","compliance check","AML verification"],"warnings":["No request or response schema documented — input fields for KYC verification are unknown","The /api/v1/kyc/verifications path is not listed on the provider's landing page catalog","All documentation pages (docs, pricing, README) returned only 'Connect wallet' with no content","KYC/identity verification may be subject to regulatory requirements — verify compliance before use","Endpoint purpose is inferred from URL path only; actual behavior is unconfirmed"],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/43","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/43","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (valid 402 challenge captured), but there is no documentation on request/response schemas, no OpenAPI spec, and the docs/pricing/README pages are empty beyond a wallet-connect prompt. The KYC verifications path is not listed on the site's main API catalog, adding uncertainty about its actual 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'0.02':56,110 '0x1a2b':196 '0x8335':190 '1':178 '2913':191 '300':203 '402':173 '85f3':197 'AML verification' 'ID verification' 'KYC check' 'accept':49 'access':39 'address':195 'agent':220 'ai/ml':100 'analyt':99 'api':66,96 'attach':75 'avail':232 'base':5,18,63,193 'base-network' 'becom':231 'bodi':212 'broad':89 'call':9,22,58,95 'caller':73 'catalog':90 'categori':121 'challeng':174 'charg':53 'compliance check' 'confirm':181 'connect':143 'contain':219 'contract':189 'crawl':134 'custom':36 'data':98,103 'detail':149 'doc':137 'document':135,206 'endpoint':3,16,28,116,164,169 'exact':152 'expect':213 'field':156 'finance/web3':102 'format':159 'header':79 'host':84 'howev':113 'identity verification' 'infer':101 'inform':230 'infrastructur':105 'input':209 'key':67 'know':34 'know your customer' 'kyc':1,14,33,162 'kyc-verification' 'kyc/verifications':120 'land':131 'limit':70 'list':126,227 'live':182 'lowpaymentfee.com':30,86 'maximum':200 'network':64 'no-api-key' 'offer':87 'page':132,136 'pay':7,20,93 'pay-per-cal':6,19,92 'pay-per-call' 'payment':43,78,184 'per':8,21,57,94,111 'post':50,211 'price':108,138 'promin':125 'prompt':145 'protocol':44 'provid':31 'rate':69 'readm':139 'request':51,82,112,153 'requir':72,155 'resourc':47 'respons':158,218 'return':140,170 'schema':154 'second':204 'servic':38 'settl':186 'simpli':74 'site':85,129 'span':97 'specif':46,115 'stub':226 'timeout':201 'treat':222 'unknown':166 'usdc':13,26,60,188 'usdc-settlement' 'util':106 'valid':172 'verif':2,15,37,163,217 'version':177 'via':10,23,40 'wallet':144 'without':205 'x402':11,24,42,77,176 'x402-payment'","prices":[{"id":"39bddfc0-d57d-4739-b79e-dea2c9bece48","listingId":"372ab6fe-c88a-4974-a9f8-2cc7dd239c7f","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/43","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:02.961Z"}],"sources":[{"listingId":"372ab6fe-c88a-4974-a9f8-2cc7dd239c7f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/43","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:02.961Z","lastSeenAt":"2026-04-22T05:31:08.413Z"}],"details":{"listingId":"372ab6fe-c88a-4974-a9f8-2cc7dd239c7f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/43 \\\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 valid x402 challenge with maxAmountRequired of 20000 base units (USDC, 6 decimals = $0.02) on Base network","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/43"},{"claim":"The site advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/43"}],"useCases":["Verifying user identity as part of an onboarding flow","Running KYC checks before granting access to regulated services","Automated compliance verification for fintech applications"],"bestFor":["Agents needing on-demand KYC verification without API key management","Pay-per-use identity checks settled in USDC on Base","Lightweight compliance integrations that avoid subscription commitments"],"notFor":["Bulk batch KYC processing (no documented batch endpoint)","Use cases requiring detailed documentation or SLA guarantees","Scenarios where the exact request/response schema must be known upfront"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:16.823Z"},"updatedAt":"2026-04-22T05:31:08.413Z"}}