{"id":"80ff0d39-a019-45bd-8661-fa51277f9117","shortId":"YX9WmJ","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/17`. It uses the x402 payment protocol, accepting USDC on the Base network. The endpoint is live and returns a standard 402 challenge when called without payment.\n\nThe specific endpoint charges up to $0.02 per request (maxAmountRequired of 20,000 base units of USDC, which has 6 decimals = $0.02). Payment is made via the x402 exact scheme to the specified wallet address. The endpoint accepts POST requests and returns JSON. No API keys or rate limits are advertised — access is gated purely by micropayment.\n\nThe broader lowpaymentfee.com platform hosts a variety of pay-per-call APIs across categories including 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. However, this specific listing is for the KYC verifications endpoint, which is not prominently documented on the site's landing page. No detailed documentation, request/response schemas, or examples are available for this endpoint — the docs, pricing, and API pages all render only a wallet-connect prompt with no further content.","tags":[],"capabilities":["kyc-verification","x402-payment","usdc-base","pay-per-call","json-api","no-api-key"],"categories":["identity","compliance"],"synonyms":["KYC check","identity verification","know your customer","KYC API","identity validation","compliance check","user verification"],"warnings":["The KYC verifications endpoint is not listed among the site's advertised APIs — its purpose and expected input/output are unknown.","No documentation, request schema, or response schema is available for this endpoint.","All documentation pages (docs, pricing, API, README) render only a wallet-connect prompt with no useful content.","KYC/identity verification is a regulated category — verify the provider's compliance credentials before relying on this service.","The '/17' path suffix suggests a specific resource ID; it is unclear whether this is a fixed endpoint or a parameterized route."],"endpointUrl":"https://lowpaymentfee.com/api/v1/kyc/verifications/17","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/17","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no request/response schema, no examples, and the KYC verifications endpoint is not listed on the site's landing page. The docs/pricing/API pages are empty beyond a wallet-connect prompt. The actual functionality behind this endpoint is entirely 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'0.02':74,89,171 '000':80 '20':79 '402':62 '6':87 'KYC API' 'KYC check' 'accept':48,105 'access':39,119 'across':138 'address':102 'advertis':118 'ai/ml':143 'analysi':146 'analyt':142 'api':112,137,211 'avail':203 'base':5,18,52,81 'broader':126 'call':9,22,65,136 'categori':139 'challeng':63 'charg':71 'classif':148 'compliance check' 'connect':219 'content':224 'convers':164 'custom':36 'data':141 'decim':88 'detail':196 'doc':208 'document':188,197 'embed':149 'endpoint':3,16,28,55,70,104,167,183,206 'estim':158 'exact':96 'exampl':201 'exchang':153 'feed':152 'finance/web3':150 'gas':157 'gate':121 'generat':165 'geocod':162 'host':129 'howev':174 'identity validation' 'identity verification' 'includ':140 'infer':144 'infrastructur':160 'json':110 'json-api' 'key':113 'know':34 'know your customer' 'kyc':1,14,33,181 'kyc-verification' 'land':193 'limit':116 'list':169,177 'live':57 'lowpaymentfee.com':30,127 'made':92 'maxamountrequir':77 'micropay':124 'network':53 'no-api-key' 'page':194,212 'pay':7,20,134 'pay-per-cal':6,19,133 'pay-per-call' 'payment':46,67,90 'per':8,21,75,135,172 'platform':128 'post':106 'price':151,209 'promin':187 'prompt':220 'protocol':47 'provid':31 'pure':122 'quot':156 'rate':115,154 'render':214 'request':76,107,173 'request/response':198 'return':59,109 'schema':199 'scheme':97 'sentiment':145 'servic':38 'site':191 'specif':69,176 'specifi':100 'standard':61 'summar':147 'token':155 'unit':82 'usdc':13,26,49,84 'usdc-base' 'use':43 'user verification' 'util':161 'valid':163 'varieti':131 'verif':2,15,37,182 'via':10,23,93 'wallet':101,218 'wallet-connect':217 'without':66 'x402':11,24,45,95 'x402-payment'","prices":[{"id":"47f69e16-2208-4f68-817a-f66f4c8dc9ea","listingId":"80ff0d39-a019-45bd-8661-fa51277f9117","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/17","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:46:58.727Z"}],"sources":[{"listingId":"80ff0d39-a019-45bd-8661-fa51277f9117","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/kyc/verifications/17","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:58.727Z","lastSeenAt":"2026-04-22T07:31:10.850Z"}],"details":{"listingId":"80ff0d39-a019-45bd-8661-fa51277f9117","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/17 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\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 accepting USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/17"},{"claim":"maxAmountRequired is 20000 base units of USDC (6 decimals = $0.02)","source_url":"https://lowpaymentfee.com/api/v1/kyc/verifications/17"},{"claim":"Site advertises $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages render only a wallet-connect prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Verifying user identity as part of onboarding flows","Performing KYC checks for compliance requirements","Automated identity verification in Web3 applications"],"bestFor":["Developers needing pay-per-call KYC verification without subscription commitments","Web3 applications requiring on-chain payment for compliance services","Agents that can settle USDC micropayments on Base"],"notFor":["High-volume KYC pipelines needing bulk pricing or SLAs","Use cases requiring detailed documentation or guaranteed uptime"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:17.049Z"},"updatedAt":"2026-04-22T07:31:10.850Z"}}