{"id":"6d4c40f0-3dd2-4b61-8bc8-1194c40185a6","shortId":"enp3PZ","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/55`. It is part of a broader platform offering dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints on the platform use the x402 payment protocol, settling in USDC on the Base network.\n\nThe specific endpoint probed (`/api/v1/kyc/verifications/55`) returns a live 402 challenge requesting up to 20,000 base units of USDC (0.02 USD) per request via the \"exact\" scheme. The platform advertises a flat $0.02/request pricing model with no API keys, no rate limits, and instant access. The endpoint accepts HTTP POST and returns `application/json`.\n\nDocumentation is extremely sparse — the docs, pricing, API, and README pages all resolve to a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no explanation of what the KYC verification endpoint actually accepts as input or returns as output. The resource path includes a numeric ID (`55`), but it is unclear whether this refers to a specific verification record, a verification type, or something else. Without input/output schemas or usage examples, integrating this endpoint requires experimentation.","tags":[],"capabilities":["kyc-verification","x402-payment","usdc-settlement","base-network","pay-per-call","no-api-key"],"categories":["identity","compliance"],"synonyms":["KYC API","identity verification","know your customer","AML check","identity check","verification endpoint","compliance API"],"warnings":["No OpenAPI or schema documentation available — input and output formats are unknown.","Docs, pricing, API, and README pages all render only a 'Connect wallet' prompt with no technical content.","The resource path includes a numeric ID (55) whose meaning is undocumented.","KYC/identity verification is a regulated category — no information on data handling, compliance certifications, or jurisdiction is provided.","The platform lists many diverse API categories but provides no evidence of actual backend functionality behind any of them."],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/55","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/55","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/response schemas, no OpenAPI spec, and the docs pages are empty wallet-connect stubs. The purpose of the specific resource path (/55) is unexplained. Effectively a stub 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'/request':117 '0.02':103,116 '000':98 '20':97 '402':92 '55':194 'AML check' 'KYC API' 'accept':132,180 'access':39,129 'actual':179 'advertis':113 'ai/ml':60 'analyt':59 'api':56,122,145 'application/json':137 'base':5,18,82,99 'base-network' 'broader':47 'call':9,22,55 'challeng':93 'compliance API' 'connect':153 'crypto':63 'custom':36 'data':58 'detail':160 'doc':143 'document':138,169 'dozen':50 'els':212 'endpoint':3,16,28,68,86,131,178,221 'exact':109 'exampl':218 'experiment':223 'explan':172 'extrem':140 'financ':62 'flat':115 'http':133 'id':193 'identity check' 'identity verification' 'includ':190 'infer':61 'input':182 'input/output':214 'instant':128 'integr':219 'key':123 'know':34 'know your customer' 'kyc':1,14,33,176 'kyc-verification' 'limit':126 'live':91 'lowpaymentfee.com':30 'model':119 'network':83 'no-api-key' 'numer':192 'offer':49 'openapi':164 'output':186 'page':148 'paid':6,19 'part':44 'path':189 'pay':53 'pay-per-cal':52 'pay-per-call' 'payment':75 'per':8,21,54,105 'per-cal':7,20 'platform':48,71,112 'post':134 'price':118,144 'probe':87 'prompt':155 'protocol':76 'provid':31 'rate':125 'readm':147 'record':206 'refer':201 'request':94,106 'request/response':167 'requir':222 'resolv':150 'resourc':188 'return':89,136,184 'schema':168,215 'scheme':110 'servic':38,66 'settl':77 'someth':211 'span':57 'spars':141 'spec':165 'specif':85,204 'technic':159 'type':209 'unclear':198 'unit':100 'usag':217 'usd':104 'usdc':13,26,79,102 'usdc-settlement' 'use':72 'util':65 'verif':2,15,37,177,205,208 'verification endpoint' 'via':10,23,107 'wallet':154 'whether':199 'without':213 'x402':11,24,74 'x402-payment'","prices":[{"id":"062d1bbc-0025-4183-8d77-36e309019af7","listingId":"6d4c40f0-3dd2-4b61-8bc8-1194c40185a6","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/55","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:16.773Z"}],"sources":[{"listingId":"6d4c40f0-3dd2-4b61-8bc8-1194c40185a6","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/55","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:16.773Z","lastSeenAt":"2026-04-22T01:01:05.708Z"}],"details":{"listingId":"6d4c40f0-3dd2-4b61-8bc8-1194c40185a6","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/55 \\\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":"The endpoint returns a live 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/55"},{"claim":"Platform advertises $0.02/request flat pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/55"},{"claim":"Docs, pricing, API, and README pages show only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Verifying customer identity as part of onboarding flows","Performing KYC checks without managing API keys or subscriptions","Integrating lightweight identity verification into Web3 applications"],"bestFor":["Developers needing simple pay-per-call KYC verification","Web3 projects that want to settle API costs in USDC on Base","Agents or bots that can pay via x402 without pre-registration"],"notFor":["Teams requiring detailed API documentation and SLAs before integration","High-volume KYC pipelines needing bulk pricing or guaranteed uptime"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:16.08Z"},"updatedAt":"2026-04-22T01:01:05.708Z"}}