{"id":"91603d71-fe6f-45c9-bcc8-003d9977fa13","shortId":"tujJxb","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/39`. It uses the x402 payment protocol, accepting USDC on the Base network. Each call costs $0.02 (20,000 base units of USDC with 6 decimals). The endpoint accepts POST requests and returns JSON.\n\nThe broader lowpaymentfee.com platform advertises a wide range of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance and crypto data (price feeds, exchange rates, gas estimates), and infrastructure utilities (geocoding, validation, conversion). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and no commitments required — payment is handled entirely through the x402 protocol on the Base L2 network.\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 schema, no request/response examples, and no description of what the KYC verification endpoint actually accepts or returns. The specific endpoint path includes an ID (`/39`), suggesting it may reference a particular verification record, but this is unconfirmed. Users should expect to experiment or contact the provider for integration details.","tags":[],"capabilities":["kyc-verification","x402-payment","usdc-base","pay-per-call","post-json"],"categories":["identity","compliance"],"synonyms":["KYC API","identity verification","know your customer","compliance check","ID verification","x402 KYC","Base USDC API"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.","No OpenAPI or request/response schema provided; request and response formats are unknown.","The endpoint path includes a numeric ID (/39) whose meaning is undocumented.","KYC/identity verification is a regulated category — verify the provider's compliance posture before relying on this in production.","The platform lists many diverse API categories (AI, finance, infrastructure, KYC) all at the same price, which may indicate placeholder or demo endpoints rather than production services."],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/39","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/39","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (returns a valid 402 x402 challenge), but there is zero documentation on request/response schemas, no OpenAPI spec, and the docs pages are empty. The specific purpose of the /kyc/verifications/39 path is unclear. This is effectively a stub 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'/api/v1/kyc/verifications/39':41 '0.02':57,120 '000':59 '20':58 '6':65 'Base USDC API' 'ID verification' 'KYC API' 'accept':48,69,187 'access':39 'actual':186 'advertis':79 'ai/ml':92 'analysi':95 'analyt':91 'api':88,125,153 'base':5,18,52,60,144 'broader':76 'call':9,22,55,87 'classif':97 'commit':132 'compliance check' 'connect':162 'contact':216 'content':168 'convers':114 'cost':56 'crypto':101 'custom':36 'data':90,102 'decim':66 'descript':179 'detail':221 'doc':152 'document':147 'embed':98 'endpoint':3,16,28,68,116,185,192 'entir':137 'estim':108 'exampl':176 'exchang':105 'expect':212 'experi':214 'extrem':149 'feed':104 'financ':99 'gas':107 'geocod':112 'handl':136 'id':196 'identity verification' 'includ':194 'infer':93 'infrastructur':110 'integr':220 'json':74 'key':126 'know':34 'know your customer' 'kyc':1,14,33,183 'kyc-verification' 'l2':145 'limit':129 'list':118 'lowpaymentfee.com':30,77 'may':200 'network':53,146 'openapi':172 'page':157 'particular':203 'path':193 'pay':7,20,85 'pay-per-cal':6,19,84 'pay-per-call' 'payment':46,134 'per':8,21,86,121 'platform':78 'post':70 'post-json' 'price':103,154 'prompt':164 'protocol':47,141 'provid':31,218 'rang':82 'rate':106,128 'readm':156 'record':205 'refer':201 'render':159 'request':71,122 'request/response':175 'requir':133 'return':73,189 'schema':173 'sentiment':94 'servic':38 'span':89 'spars':150 'specif':191 'suggest':198 'summar':96 'unconfirm':209 'unit':61 'usdc':13,26,49,63 'usdc-base' 'use':43 'user':210 'util':111 'valid':113 'verif':2,15,37,184,204 'via':10,23 'wallet':163 'wide':81 'x402':11,24,45,140 'x402 KYC' 'x402-payment'","prices":[{"id":"dbaaa57a-5722-4bcc-9120-5204917ce5b3","listingId":"91603d71-fe6f-45c9-bcc8-003d9977fa13","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/39","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:06.013Z"}],"sources":[{"listingId":"91603d71-fe6f-45c9-bcc8-003d9977fa13","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/39","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:06.013Z","lastSeenAt":"2026-04-22T04:01:35.270Z"}],"details":{"listingId":"91603d71-fe6f-45c9-bcc8-003d9977fa13","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/39 \\\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 x402 challenge with USDC on Base, maxAmountRequired 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/39"},{"claim":"All endpoints 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":"Docs, API, pricing, and README pages render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Verifying customer identity as part of onboarding flows","Compliance checks for financial or crypto applications","Automated KYC lookups triggered by agent workflows"],"bestFor":["Developers needing pay-per-call KYC without API key management","Agent-based workflows requiring on-chain payment for identity checks","Crypto-native applications already on Base network"],"notFor":["Production KYC pipelines requiring documented SLAs and detailed schemas","Bulk identity verification with volume discounts","Users who need fiat-only payment rails"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:16.632Z"},"updatedAt":"2026-04-22T04:01:35.270Z"}}