{"id":"63a586a8-bfb5-443d-abf0-e9bc769cd5c3","shortId":"2JaHRX","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/68`. It uses the x402 payment protocol, accepting USDC on the Base network. The endpoint returns a 402 challenge requiring an X-PAYMENT header with a per-request cost of $0.02 (20,000 base units of USDC with 6 decimals). No API keys or rate limits are required — payment is the sole access control.\n\nThe broader lowpaymentfee.com platform advertises a wide catalog of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request, settled in USDC on Base. The specific endpoint being listed here (`/api/v1/kyc/verifications/68`) falls under a KYC/verification category not explicitly shown on the landing page catalog, so its exact input/output schema is unknown.\n\nDocumentation is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawl. The endpoint is confirmed live (402 challenge captured), but the lack of documentation means callers must discover the expected POST body and response format through 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","ID verification","compliance check","AML verification","user verification"],"warnings":["No request or response schema documentation available","The /docs, /api, /pricing, and /README pages are all empty (only show 'Connect wallet')","The specific endpoint /api/v1/kyc/verifications/68 is not listed in the site's public API catalog","KYC/identity verification is a regulated category — no information on data handling, compliance certifications, or provider identity is available","The '68' in the URL path is unexplained and may be a resource ID rather than a stable endpoint"],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/68","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/68","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on request/response schemas, no OpenAPI spec, and the KYC verification endpoint is not even listed on the site's own catalog. This is effectively a stub 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'/api/v1/kyc/verifications/68':41,156 '/docs':182 '/pricing':184 '/readme':186 '0.02':73,142 '000':75 '20':74 '402':58,221 '6':81 'AML verification' 'ID verification' 'KYC API' 'accept':48 'access':39,95 'advertis':101 'ai/ml':114 'analysi':117 'analyt':113 'api':84,110 'avail':212 'base':5,18,52,76,149 'base-network' 'bodi':236 'broader':98 'call':9,22,109 'caller':230 'captur':223 'catalog':104,169 'categori':161 'challeng':59,222 'classif':119 'compliance check' 'confirm':219 'connect':192 'content':198 'control':96 'convers':135 'cost':71 'crawl':215 'custom':36 'data':112 'decim':82 'discov':232 'document':177,207,228 'embed':120 'endpoint':3,16,28,55,138,152,217 'estim':129 'exact':172 'exampl':211 'exchang':124 'expect':234 'experiment':241 'explicit':163 'extrem':179 'fall':157 'feed':123 'finance/web3':121 'format':239 'gas':128 'generat':136 'geocod':133 'header':65 'identity verification' 'infer':115 'infrastructur':131 'input/output':173 'key':85 'know':34 'know your customer' 'kyc':1,14,33 'kyc-verification' 'kyc/verification':160 'lack':226 'land':167 'limit':88 'list':140,154 'live':220 'lowpaymentfee.com':30,99 'mean':229 'must':231 'network':53 'no-api-key' 'openapi':202 'page':168,187 'paid':6,19 'pay':107 'pay-per-cal':106 'pay-per-call' 'payment':46,64,91 'per':8,21,69,108,143 'per-cal':7,20 'per-request':68 'platform':100 'post':235 'price':122 'prompt':194 'protocol':47 'provid':31 'quot':127 'rate':87,125 'render':189 'request':70,144 'request/response':205 'requir':60,90 'respons':238 'return':56 'schema':174,206 'sentiment':116 'servic':38 'settl':145 'shown':164 'sole':94 'span':111 'spars':180 'spec':203 'specif':151 'summar':118 'token':126 'unit':77 'unknown':176 'usag':210 'usdc':13,26,49,79,147 'usdc-settlement' 'use':43 'user verification' 'util':132 'valid':134 'verif':2,15,37 'via':10,23 'wallet':193 'wide':103 'x':63 'x-payment':62 'x402':11,24,45 'x402-payment'","prices":[{"id":"4599825a-6131-4fb8-b8d5-f5f86d454177","listingId":"63a586a8-bfb5-443d-abf0-e9bc769cd5c3","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/68","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:16.772Z"}],"sources":[{"listingId":"63a586a8-bfb5-443d-abf0-e9bc769cd5c3","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/68","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:16.772Z","lastSeenAt":"2026-04-22T01:01:05.708Z"}],"details":{"listingId":"63a586a8-bfb5-443d-abf0-e9bc769cd5c3","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/68 \\\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 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/68"},{"claim":"All listed APIs are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/68"}],"useCases":["Verifying user identity as part of onboarding flows","Performing KYC checks for compliance with financial regulations","Automated identity verification in Web3 applications"],"bestFor":["Developers needing pay-per-call KYC verification without subscription commitments","Web3 projects requiring on-chain-settled compliance APIs","Agents that can pay with USDC on Base for identity checks"],"notFor":["Teams needing well-documented APIs with clear request/response schemas","High-volume KYC workflows where per-call pricing at $0.02 may not be cost-effective compared to bulk plans","Regulated environments requiring audit trails and SLA guarantees from the verification provider"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:16.17Z"},"updatedAt":"2026-04-22T01:01:05.708Z"}}