{"id":"6de29db3-82a7-4ee3-b565-703ba85e9581","shortId":"xKZ6mg","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/27`. It uses the x402 payment protocol, accepting USDC on the Base network for per-request payment. The x402 challenge confirms the endpoint is live and returns a 402 Payment Required response with a max amount of 20,000 base units of USDC (i.e., $0.02 per request, since USDC uses 6 decimals).\n\nThe broader lowpaymentfee.com platform advertises a wide catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced at $0.02 per request. The platform emphasizes no API keys, no rate limits, and instant access. Payment is settled on-chain via USDC on Base to a specified wallet address.\n\nHowever, documentation for this specific KYC verification endpoint is essentially absent. The crawled docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what input the KYC endpoint expects or what it returns. The endpoint path includes an ID (`/27`), but it is unclear whether this is a resource identifier, a verification type, or something else. Users should expect to experiment or contact the provider for integration guidance.","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","KYC API","identity validation","compliance check","customer verification"],"warnings":["No OpenAPI schema or endpoint documentation available","No request or response examples; input format is unknown","The path segment '/27' is unexplained — unclear if it's a fixed resource or variable","Docs, API, pricing, and README pages all returned only 'Connect wallet' with no content","KYC/identity verification is a regulated category — no compliance certifications or data handling policies are documented"],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/27","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/27","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The x402 challenge is live and confirms pricing and network, but there is zero documentation for this specific KYC endpoint — no schema, no request/response examples, no description of what verification ID 27 means. The crawled pages beyond the homepage returned only wallet-connect prompts. This is effectively a stub 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'/api/v1/kyc/verifications/27':41 '0.02':86,120 '000':80 '20':79 '402':70 '6':92 'KYC API' 'KYC check' 'absent':160 'accept':48 'access':39,134 'address':149 'advertis':98 'ai/ml':111 'amount':77 'analyt':110 'api':107,127,164 'base':5,18,52,81,144 'base-network' 'broader':95 'call':9,22,106 'catalog':101 'chain':140 'challeng':61 'compliance check' 'confirm':62 'connect':173 'contact':232 'crawl':162 'custom':36 'customer verification' 'data':109 'decim':93 'descript':191 'detail':180 'doc':163 'document':151 'els':225 'emphas':125 'endpoint':3,16,28,64,157,197,204 'essenti':159 'exampl':188 'expect':198,228 'experi':230 'finance/web3':113 'guidanc':237 'howev':150 'i.e':85 'id':208 'identifi':219 'identity validation' 'identity verification' 'includ':206 'infer':112 'infrastructur':115 'input':194 'instant':133 'integr':236 'key':128 'know':34 'know your customer' 'kyc':1,14,33,155,196 'kyc-verification' 'limit':131 'live':66 'lowpaymentfee.com':30,96 'max':76 'network':53 'no-api-key' 'on-chain':138 'openapi':184 'page':168 'path':205 'pay':7,20,104 'pay-per-cal':6,19,103 'pay-per-call' 'payment':46,58,71,135 'per':8,21,56,87,105,121 'per-request':55 'platform':97,124 'price':118,165 'prompt':175 'protocol':47 'provid':31,234 'rate':130 'readm':167 'request':57,88,122 'request/response':187 'requir':72 'resourc':218 'respons':73 'return':68,170,202 'schema':185 'servic':38 'settl':137 'sinc':89 'someth':224 'span':108 'specif':154 'specifi':147 'technic':179 'type':222 'unclear':213 'unit':82 'usdc':13,26,49,84,90,142 'usdc-settlement' 'use':43,91 'user':226 'util':116 'verif':2,15,37,156,221 'via':10,23,141 'wallet':148,174 'whether':214 'wide':100 'x402':11,24,45,60 'x402-payment'","prices":[{"id":"fa479bb8-24c4-4f17-9543-283144d198f6","listingId":"6de29db3-82a7-4ee3-b565-703ba85e9581","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/27","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:05.397Z"}],"sources":[{"listingId":"6de29db3-82a7-4ee3-b565-703ba85e9581","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/27","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:05.397Z","lastSeenAt":"2026-04-22T04:01:35.240Z"}],"details":{"listingId":"6de29db3-82a7-4ee3-b565-703ba85e9581","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/27 \\\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 402 with x402 challenge advertising USDC on Base at maxAmountRequired 20000 (=$0.02)","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/27"},{"claim":"Platform advertises $0.02/request 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/27"}],"useCases":["Verifying customer identity as part of onboarding flows","Performing KYC checks without managing API keys or subscriptions","Integrating compliance verification into agent-driven workflows","On-demand identity verification with crypto-native payment"],"bestFor":["Developers needing pay-per-call KYC verification without signup","Agent workflows requiring programmatic identity checks","Projects already using USDC on Base for payments"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","Bulk KYC processing where per-call pricing may not be cost-effective","Regulated environments requiring auditable vendor compliance certifications"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:16.679Z"},"updatedAt":"2026-04-22T04:01:35.240Z"}}