{"id":"e215af76-9fb5-459f-ac68-5f59113add00","shortId":"NPtLAb","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/49` 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 host 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. This particular endpoint falls under a KYC/verification category that is not prominently listed on the landing page but is live and returning a valid 402 challenge. The payment is settled in USDC (contract 0x8335…2913) on Base to the payee address 0x1A2B…85F3, with a maximum timeout of 300 seconds.\n\nBecause the crawled documentation pages (docs, pricing, README) all returned only a \"Connect wallet\" prompt with no substantive content, there is no schema documentation, example request/response, or detailed description of what the KYC verification endpoint actually returns. The endpoint is confirmed live via its 402 challenge, but the exact input fields and output format remain unknown.","tags":[],"capabilities":["kyc-verification","x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key"],"categories":["identity","compliance"],"synonyms":["KYC check","identity verification","know your customer","ID verification","compliance check","AML verification"],"warnings":["No documentation available — all doc/pricing/README pages return only 'Connect wallet' with no content.","The /api/v1/kyc/verifications/49 path is not listed among the site's advertised APIs; its purpose and expected input/output are unknown.","KYC/identity verification is a regulated category — callers should verify the provider's compliance credentials independently.","Request and response schemas are completely undocumented; integration requires trial-and-error."],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/49","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/49","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (valid 402 challenge captured), but there is zero documentation on request/response schemas, no OpenAPI spec, and all doc pages return only a wallet-connect prompt. The KYC verification path is not listed on the landing page, making its purpose and data format entirely opaque. This is effectively a stub 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'0.02':56,110 '0x1a2b':154 '0x8335':146 '2913':147 '300':161 '402':137,207 '85f3':155 'AML verification' 'ID verification' 'KYC check' 'accept':49 'access':39 'actual':198 'address':153 'ai/ml':100 'analyt':99 'api':66,96 'attach':75 'base':5,18,63,149 'base-network' 'broad':89 'call':9,22,58 'caller':73 'catalog':90 'categori':120 'challeng':138,208 'charg':53 'compliance check' 'confirm':203 'connect':175 'content':181 'contract':145 'crawl':165 'custom':36 'data':98,103 'descript':191 'detail':190 'doc':168 'document':166,186 'endpoint':3,16,28,115,197,201 'exact':211 'exampl':187 'fall':116 'field':213 'finance/web3':102 'format':216 'header':79 'host':84 'identity verification' 'infer':101 'infrastructur':105 'input':212 'key':67 'know':34 'know your customer' 'kyc':1,14,33,195 'kyc-verification' 'kyc/verification':119 'land':128 'limit':70 'list':125 'live':132,204 'lowpaymentfee.com':30,86 'maximum':158 'network':64 'no-api-key' 'offer':87 'output':215 'page':129,167 'particular':114 'pay':7,20,93 'pay-per-cal':6,19 'pay-per-request':92 'paye':152 'payment':43,78,140 'per':8,21,57,94,111 'post':50 'price':108,169 'promin':124 'prompt':177 'protocol':44 'provid':31 'rate':69 'readm':170 'remain':217 'request':51,82,95,112 'request/response':188 'requir':72 'resourc':47 'return':134,172,199 'schema':185 'second':162 'servic':38 'settl':142 'simpli':74 'site':85 'span':97 'specif':46 'substant':180 'timeout':159 'unknown':218 'usdc':13,26,60,144 'usdc-settlement' 'util':106 'valid':136 'verif':2,15,37,196 'via':10,23,40,205 'wallet':176 'x402':11,24,42,77 'x402-payment'","prices":[{"id":"525b97de-a7f6-4f08-b842-f86f62a87de2","listingId":"e215af76-9fb5-459f-ac68-5f59113add00","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/49","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:02.361Z"}],"sources":[{"listingId":"e215af76-9fb5-459f-ac68-5f59113add00","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/49","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:02.361Z","lastSeenAt":"2026-04-22T05:31:08.378Z"}],"details":{"listingId":"e215af76-9fb5-459f-ac68-5f59113add00","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/49 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\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 challenge with maxAmountRequired of 20000 base units (USDC, 6 decimals = $0.02) on Base network.","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/49"},{"claim":"Site advertises $0.02/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/49"}],"useCases":["Verifying customer identity as part of onboarding flows","Performing KYC checks without managing API key subscriptions","Integrating compliance verification into agent-driven workflows"],"bestFor":["Agents or apps needing on-demand KYC verification with crypto payment","Developers who want keyless, pay-per-use identity checks on Base"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","High-volume KYC pipelines where per-request pricing may not be cost-effective","Regulated environments requiring auditable vendor compliance certifications"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:16.823Z"},"updatedAt":"2026-04-22T05:31:08.378Z"}}