{"id":"dbeb0ea4-3dfa-4dc7-8558-89cdd4aafe38","shortId":"WbJUQJ","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/1` accepts POST requests and charges up to $0.02 per call, settled 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 broader lowpaymentfee.com platform offers a suite of pay-per-request APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/Web3 data (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02/request pricing model and x402 payment flow on Base.\n\nDocumentation is extremely sparse — the docs, API, pricing, and README pages all render 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 verification endpoint expects or what it returns. The endpoint is live (returns a proper 402 challenge), but without documentation it is difficult to know what fields to POST or what the response payload looks like.","tags":[],"capabilities":["kyc-verification","x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","post-endpoint"],"categories":["identity","compliance"],"synonyms":["KYC API","identity verification","know your customer","KYC check","identity validation","compliance verification","x402 KYC"],"warnings":["No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'","No OpenAPI or request/response schema provided for the KYC verification endpoint","The specific purpose and data format of /api/v1/kyc/verifications/1 is inferred solely from the URL path","KYC/identity verification is a regulated category — verify the provider's compliance credentials independently","This endpoint is not listed on the provider's own homepage API catalog, raising questions about its status"],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/1","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/1","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","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. The KYC verification purpose is only inferred from the URL path; no concrete details about input fields or output format are 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'/request':130 '0.02':56,129 '402':192 'KYC API' 'KYC check' 'accept':49 'access':39 'ai/ml':100 'analysi':103 'analyt':99 'api':67,96,145 'attach':76 'base':5,18,64,138 'base-network' 'broader':85 'call':9,22,58 'caller':74 'challeng':193 'charg':53 'classif':105 'compliance verification' 'connect':154 'convers':122 'custom':36 'data':98,108 'descript':172 'detail':161 'difficult':199 'doc':144 'document':139,196 'embed':106 'endpoint':3,16,28,125,179,186 'estim':116 'exampl':169 'exchang':111 'expect':180 'extrem':141 'feed':110 'field':203 'finance/web3':107 'flow':136 'gas':115 'generat':123 'geocod':120 'header':80 'identity validation' 'identity verification' 'infer':101 'infrastructur':118 'input':175 'key':68 'know':34,201 'know your customer' 'kyc':1,14,33,177 'kyc-verification' 'like':212 'limit':71 'live':188 'look':211 'lowpaymentfee.com':30,86 'model':132 'network':65 'no-api-key' 'offer':88 'openapi':165 'page':149 'pay':7,20,93 'pay-per-cal':6,19 'pay-per-request':92 'payload':210 'payment':43,79,135 'per':8,21,57,94 'platform':87 'post':50,205 'post-endpoint' 'price':109,131,146 'prompt':156 'proper':191 'protocol':44 'provid':31 'quot':114 'rate':70,112 'readm':148 'render':151 'request':51,83,95 'request/response':168 'requir':73 'resourc':47 'respons':209 'return':184,189 'schema':166 'sentiment':102 'servic':38 'settl':59 'share':126 'simpli':75 'span':97 'spars':142 'specif':46 'suit':90 'summar':104 'technic':160 'token':113 'usdc':13,26,61 'usdc-settlement' 'util':119 'valid':121 'verif':2,15,37,178 'via':10,23,40 'wallet':155 'without':195 'x402':11,24,42,78,134 'x402 KYC' 'x402-payment'","prices":[{"id":"1e3e3552-a925-47f9-baf6-4df605f4d097","listingId":"dbeb0ea4-3dfa-4dc7-8558-89cdd4aafe38","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/1","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:46:58.090Z"}],"sources":[{"listingId":"dbeb0ea4-3dfa-4dc7-8558-89cdd4aafe38","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/1","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:58.090Z","lastSeenAt":"2026-04-22T07:31:10.781Z"}],"details":{"listingId":"dbeb0ea4-3dfa-4dc7-8558-89cdd4aafe38","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/1 \\\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 (USDC, 6 decimals = $0.02) on Base network","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/1"},{"claim":"All listed APIs are priced at $0.02/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/1"},{"claim":"Docs, API, pricing, and README pages render only a 'Connect wallet' prompt with no technical content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Verifying customer identity as part of onboarding flows","Compliance checks for financial or Web3 applications","Automated KYC screening integrated into agent workflows"],"bestFor":["Developers needing pay-per-call KYC verification without subscription commitments","Agent-based workflows that can settle payments in USDC on Base","Applications requiring keyless, instant-access identity verification"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","High-volume KYC pipelines that need bulk pricing or SLAs","Scenarios requiring fiat-only payment rails"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:17.049Z"},"updatedAt":"2026-04-22T07:31:10.781Z"}}