{"id":"926522fd-fa6b-49d8-ad91-d43b8d5be939","shortId":"5x3nPw","kind":"x402","title":"Retrieve employee SSN data via pay-per-request x402 endpoint on Base network using USDC.","tagline":"Retrieve employee SSN data via pay-per-request x402 endpoint on Base network using USDC.","description":"This endpoint at lowpaymentfee.com provides access to employee Social Security Number (SSN) data behind an x402 paywall. The specific resource `/api/v1/employees/45/ssn` returns sensitive employee information in JSON format upon payment of $0.02 per request in USDC on the Base network. No API keys or accounts are required — callers simply attach an x402 payment header to a POST request.\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that offers a variety of pay-per-call APIs across data analytics, AI/ML inference, finance, and utility categories, all priced at $0.02 per request. The x402 challenge was successfully captured, confirming the endpoint is live. Payment is settled on-chain via USDC (contract 0x8335…2913) on Base to address 0x1A2B…85F3, with a maximum timeout of 300 seconds.\n\nImportant caveat: this endpoint purports to serve Social Security Numbers, which are highly sensitive personally identifiable information (PII). There is no documentation explaining the data source, authorization model, or legal basis for distributing SSNs. The broader site's documentation pages return only a \"Connect wallet\" prompt with no substantive content. Consumers should exercise extreme caution and verify compliance with applicable privacy and data protection regulations before using this endpoint.","tags":[],"capabilities":["x402-payment","usdc-base","employee-data","ssn-lookup","pay-per-request","json-response"],"categories":["data","pii"],"synonyms":["social security number API","employee SSN lookup","PII endpoint","x402 employee data","pay-per-call SSN","Base USDC API"],"warnings":["Endpoint serves Social Security Numbers (SSNs), which are regulated PII under numerous laws (e.g., CCPA, GLBA, state SSN protection statutes). No compliance documentation is provided.","All documentation pages (/docs, /api, /pricing, /README) return only a 'Connect wallet' prompt with no substantive content.","No request or response schema is documented; the output format is unknown beyond mimeType application/json.","Data provenance is entirely unclear — there is no indication of where employee SSN data originates or whether it is real or synthetic.","The hardcoded employee ID (45) in the URL suggests this may be a demo or test endpoint rather than a production service."],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/45/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/45/ssn","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The x402 challenge is live and confirms pricing and payment details, but there is zero documentation on request/response schemas, no examples, and the docs pages are empty stubs. The endpoint serves highly sensitive PII (SSNs) with no visible compliance, privacy policy, or data-source documentation, which is a major red 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'0.02':64,122 '0x1a2b':151 '0x8335':145 '2913':146 '300':158 '85f3':152 'Base USDC API' 'PII endpoint' 'access':38 'account':77 'across':110 'address':150 'ai/ml':113 'analyt':112 'api':74,109 'applic':219 'attach':82 'author':186 'base':13,29,71,148 'basi':190 'behind':46 'broader':97,195 'call':108 'caller':80 'captur':130 'categori':118 'caution':214 'caveat':161 'chain':141 'challeng':127 'complianc':217 'confirm':131 'connect':203 'consum':210 'content':209 'contract':144 'data':4,20,45,111,184,222 'distribut':192 'document':181,198 'employe':2,18,40,56 'employee SSN lookup' 'employee-data' 'endpoint':11,27,34,92,133,163,228 'exercis':212 'explain':182 'extrem':213 'financ':115 'format':60 'header':86 'high':172 'identifi':175 'import':160 'infer':114 'inform':57,176 'json':59 'json-response' 'key':75 'legal':189 'live':135 'lowpaymentfee.com':36,99 'maximum':155 'model':187 'network':14,30,72 'number':43,169 'offer':101 'on-chain':139 'page':199 'part':94 'pay':7,23,106 'pay-per-cal':105 'pay-per-call SSN' 'pay-per-request':6,22 'payment':62,85,136 'paywal':49 'per':8,24,65,107,123 'person':174 'pii':177 'platform':98 'post':89 'price':120 'privaci':220 'prompt':205 'protect':223 'provid':37 'purport':164 'regul':224 'request':9,25,66,90,124 'requir':79 'resourc':52 'retriev':1,17 'return':54,200 'second':159 'secur':42,168 'sensit':55,173 'serv':166 'settl':138 'simpli':81 'site':196 'social':41,167 'social security number API' 'sourc':185 'specif':51 'ssn':3,19,44 'ssn-lookup' 'ssns':193 'substant':208 'success':129 'timeout':156 'upon':61 'usdc':16,32,68,143 'usdc-base' 'use':15,31,226 'util':117 'varieti':103 'verifi':216 'via':5,21,142 'wallet':204 'x402':10,26,48,84,126 'x402 employee data' 'x402-payment'","prices":[{"id":"5d012514-55c8-4cec-8e2f-60b115635780","listingId":"926522fd-fa6b-49d8-ad91-d43b8d5be939","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/45/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":"2026-04-21T18:32:16.810Z"}],"sources":[{"listingId":"926522fd-fa6b-49d8-ad91-d43b8d5be939","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/45/ssn","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:16.810Z","lastSeenAt":"2026-04-24T12:04:39.105Z"}],"details":{"listingId":"926522fd-fa6b-49d8-ad91-d43b8d5be939","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/45/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 HTTP 402 with x402 challenge, confirming it is live","source_url":"https://lowpaymentfee.com/api/v1/employees/45/ssn"},{"claim":"Payment is $0.02 per request in USDC on Base network (maxAmountRequired 20000, USDC has 6 decimals)","source_url":"https://lowpaymentfee.com/api/v1/employees/45/ssn"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/employees/45/ssn"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages return only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving employee SSN for payroll or HR verification workflows","Programmatic access to sensitive employee identifiers behind a micropayment wall","Agent-driven identity verification requiring SSN data"],"bestFor":["Developers needing on-demand SSN retrieval without API key management","Automated payroll or HR systems that can settle payments on Base","x402-compatible agents requiring PII data access"],"notFor":["Anyone without a verified legal basis for accessing SSNs — this is regulated PII","Production systems requiring documented data provenance and compliance guarantees","Users who cannot transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:14.535Z"},"updatedAt":"2026-04-24T12:04:39.105Z"}}