{"id":"be65f818-0283-478d-bd57-033d1f8f9a60","shortId":"ntHbLS","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/28`. It uses the x402 payment protocol, accepting USDC on the Base network. The endpoint returns a 402 challenge requiring payment before access, with a maximum cost of $0.02 per request (20,000 base units of USDC with 6 decimals). The payment is settled on-chain to the specified wallet address.\n\nThe broader lowpaymentfee.com platform advertises a range of pay-per-call 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 are listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.\n\nHowever, the specific KYC verification endpoint (`/api/v1/kyc/verifications/28`) is not listed on the site's landing page among the advertised APIs. Documentation pages (`/docs`, `/pricing`, `/api`, `/README`) all returned only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no documentation describing what input the KYC endpoint expects or what it returns. The actual functionality behind this endpoint is unclear.","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","compliance verification","ID verification","x402 KYC"],"warnings":["The /api/v1/kyc/verifications/28 endpoint is not listed among the site's advertised APIs — its purpose and functionality are unverified.","All documentation pages (/docs, /pricing, /api, /README) returned only 'Connect wallet' with no content.","No OpenAPI schema, request format, or response format is available — callers have no way to know what input is expected.","KYC/identity verification is a regulated category; verify the provider's compliance posture before relying on this service."],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/28","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/28","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 captured) and pricing is clear ($0.02 USDC on Base), but there is zero documentation, no OpenAPI schema, no request/response examples, and the KYC endpoint is not even listed among the site's advertised APIs. The docs, pricing, and README pages are all empty. This is effectively a stub 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'/api/v1/kyc/verifications/28':41,159 '/docs':175 '/pricing':176 '/readme':178 '0.02':69,138 '000':73 '20':72 '402':58 '6':79 'ID verification' 'KYC check' 'accept':48 'access':39,63 'actual':213 'address':92 'advertis':97,171 'ai/ml':109 'among':169 'analysi':112 'analyt':108 'api':105,143,172 'base':5,18,52,74 'base-network' 'behind':215 'broader':94 'call':9,22,104 'chain':87 'challeng':59 'classif':114 'commit':151 'compliance verification' 'connect':183 'content':189 'convers':131 'cost':67 'custom':36 'data':107,117 'decim':80 'describ':201 'document':173,200 'embed':115 'endpoint':3,16,28,55,134,158,206,217 'estim':125 'exampl':197 'exchang':120 'expect':207 'feed':119 'finance/web3':116 'function':214 'gas':124 'generat':132 'geocod':129 'howev':153 'identity verification' 'infer':110 'infrastructur':127 'input':203 'key':144 'know':34 'know your customer' 'kyc':1,14,33,156,205 'kyc-verification' 'land':167 'limit':147 'list':136,162 'lowpaymentfee.com':30,95 'maximum':66 'minimum':150 'network':53 'no-api-key' 'on-chain':85 'openapi':193 'page':168,174 'paid':6,19 'pay':102 'pay-per-cal':101 'pay-per-call' 'payment':46,61,82 'per':8,21,70,103,139 'per-cal':7,20 'platform':96 'price':118 'prompt':185 'protocol':47 'provid':31 'quot':123 'rang':99 'rate':121,146 'request':71,140 'request/response':196 'requir':60,152 'return':56,180,211 'schema':194 'sentiment':111 'servic':38 'settl':84 'site':165 'span':106 'specif':155 'specifi':90 'substant':188 'summar':113 'token':122 'unclear':219 'unit':75 'usdc':13,26,49,77 'usdc-settlement' 'use':43 'util':128 'valid':130 'verif':2,15,37,157 'via':10,23 'wallet':91,184 'x402':11,24,45 'x402 KYC' 'x402-payment'","prices":[{"id":"6cb5487d-1c26-4329-828f-b4f7c96a31dd","listingId":"be65f818-0283-478d-bd57-033d1f8f9a60","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/28","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:46:57.474Z"}],"sources":[{"listingId":"be65f818-0283-478d-bd57-033d1f8f9a60","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/28","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:57.474Z","lastSeenAt":"2026-04-22T07:00:59.909Z"}],"details":{"listingId":"be65f818-0283-478d-bd57-033d1f8f9a60","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/28 \\\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/28"},{"claim":"All APIs are listed 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 KYC verifications endpoint is not listed among the site's advertised API categories","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages return only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Verifying customer identity as part of onboarding flows","Compliance checks for financial or regulated services","Automated KYC lookups triggered by AI agents"],"bestFor":["Developers needing on-demand KYC verification without API key management","Agents that can pay per-call via x402 on Base","Applications requiring low-friction identity checks at $0.02 per call"],"notFor":["Users who need detailed documentation or schema before integrating","Bulk KYC processing where per-call pricing may not be cost-effective","Scenarios requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:17.053Z"},"updatedAt":"2026-04-22T07:00:59.909Z"}}