{"id":"264e3bdd-4f39-46a3-9a47-8e66fc3d349c","shortId":"xq6L3d","kind":"x402","title":"Retrieve employee SSN data via x402 micropayment on Base network for $0.02 per request.","tagline":"Retrieve employee SSN data via x402 micropayment on Base network for $0.02 per request.","description":"This endpoint at lowpaymentfee.com returns employee Social Security Number (SSN) data for a specific employee record (ID 184) behind an x402 paywall. It accepts POST requests and settles payments in USDC on the Base network using the x402 \"exact\" payment scheme.\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that offers various pay-per-call APIs across data analytics, AI/ML inference, finance, and utility categories — all priced at $0.02 per request with no API keys, no rate limits, and no subscriptions required. The x402 challenge confirms the endpoint is live and returns application/json content.\n\nHowever, this specific endpoint raises significant concerns. It purports to serve personally identifiable information (an employee's SSN), which is highly sensitive regulated data. There is no documentation explaining the data source, authorization model, or legal basis for serving SSNs via a public pay-per-call API. The broader site's docs, pricing, and API pages are essentially empty (showing only \"Connect wallet\"). The platform appears to be a demonstration or test deployment of x402 payment infrastructure rather than a production data service with verified, legitimate data sources.","tags":[],"capabilities":["x402-payment","usdc-base-network","employee-data-lookup","ssn-retrieval","pay-per-call","no-api-key"],"categories":["data","pii"],"synonyms":["employee SSN lookup","social security number API","employee data endpoint","x402 paid API","Base USDC micropayment","PII retrieval API"],"warnings":["Endpoint claims to serve Social Security Numbers (PII) — highly regulated data with no visible compliance documentation","No OpenAPI schema, no example requests or responses available","All documentation pages (docs, pricing, API, README) are empty — only show 'Connect wallet'","Data source and legitimacy of employee records are completely unknown","This may be a demo/test deployment rather than a production service","Using this endpoint for real PII could violate data protection laws"],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/184/ssn","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/employees/184/ssn","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 in USDC on Base), but there is no documentation, no OpenAPI schema, no example responses, and the docs/pricing/API pages are empty stubs. The endpoint claims to serve highly sensitive PII (SSN) with no visible compliance, authorization, or data-source documentation, which is a major red 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'184':46 'Base USDC micropayment' 'PII retrieval API' 'accept':52 'across':87 'ai/ml':90 'analyt':89 'api':86,104,172,180 'appear':191 'application/json':123 'author':157 'base':9,23,62 'basi':161 'behind':47 'broader':76,174 'call':85,171 'categori':95 'challeng':115 'concern':131 'confirm':116 'connect':187 'content':124 'data':4,18,39,88,148,155,207,212 'demonstr':195 'deploy':198 'doc':177 'document':152 'employe':2,16,34,43,140 'employee SSN lookup' 'employee data endpoint' 'employee-data-lookup' 'empti':184 'endpoint':30,71,118,128 'essenti':183 'exact':67 'explain':153 'financ':92 'high':145 'howev':125 'id':45 'identifi':137 'infer':91 'inform':138 'infrastructur':202 'key':105 'legal':160 'legitim':211 'limit':108 'live':120 'lowpaymentfee.com':32,78 'micropay':7,21 'model':158 'network':10,24,63 'no-api-key' 'number':37 'offer':80 'page':181 'part':73 'pay':83,169 'pay-per-cal':82,168 'pay-per-call' 'payment':57,68,201 'paywal':50 'per':13,27,84,100,170 'person':136 'platform':77,190 'post':53 'price':97,178 'product':206 'public':167 'purport':133 'rais':129 'rate':107 'rather':203 'record':44 'regul':147 'request':14,28,54,101 'requir':112 'retriev':1,15 'return':33,122 'scheme':69 'secur':36 'sensit':146 'serv':135,163 'servic':208 'settl':56 'show':185 'signific':130 'site':175 'social':35 'social security number API' 'sourc':156,213 'specif':42,127 'ssn':3,17,38,142 'ssn-retrieval' 'ssns':164 'subscript':111 'test':197 'usdc':59 'usdc-base-network' 'use':64 'util':94 'various':81 'verifi':210 'via':5,19,165 'wallet':188 'x402':6,20,49,66,114,200 'x402 paid API' 'x402-payment'","prices":[{"id":"a3cf1bb0-7626-44f0-9db1-fe23eb1a7e59","listingId":"264e3bdd-4f39-46a3-9a47-8e66fc3d349c","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/employees/184/ssn","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:15.826Z"}],"sources":[{"listingId":"264e3bdd-4f39-46a3-9a47-8e66fc3d349c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/184/ssn","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:15.826Z","lastSeenAt":"2026-04-24T17:34:04.174Z"}],"details":{"listingId":"264e3bdd-4f39-46a3-9a47-8e66fc3d349c","quickStartSnippet":"# This endpoint requires an x402 payment header (USDC on Base)\ncurl -X POST https://lowpaymentfee.com/api/v1/employees/184/ssn \\\n  -H 'Content-Type: application/json' \\\n  -H 'X-PAYMENT: <x402_payment_token>'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge advertising USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/employees/184/ssn"},{"claim":"Platform advertises $0.02 per request pricing with no API keys, no rate limits","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/employees/184/ssn"},{"claim":"maxAmountRequired is 20000 base units; USDC uses 6 decimals so this equals $0.02","source_url":"https://lowpaymentfee.com/api/v1/employees/184/ssn"}],"useCases":["Retrieving employee SSN data behind a micropayment wall","Testing x402 payment protocol integrations","Demonstrating pay-per-call API patterns on Base network"],"bestFor":["Developers testing x402 payment flows","Exploring micropayment-gated API patterns"],"notFor":["Production PII handling without verified compliance and legal review","Any use case requiring verified, authoritative SSN data","Applications subject to data protection regulations (GDPR, CCPA, etc.)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:16.03Z"},"updatedAt":"2026-04-24T17:34:04.174Z"}}