{"id":"4d65923c-e271-4915-b19f-5515641465cf","shortId":"QRxjw7","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 198) behind an x402 paywall. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with an exact-scheme challenge requiring a maximum of 20,000 base units (i.e., $0.02 given USDC's 6 decimals).\n\nThe provider site lowpaymentfee.com hosts a broad catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance, and utility services, all priced at $0.02 per request with no API keys, no rate limits, and no commitments. Documentation pages beyond the landing page returned only a \"Connect wallet\" prompt with no further technical detail, so the actual response schema, required POST body fields, and the nature of the returned SSN data are unknown.\n\nThis specific endpoint raises significant concerns. It purports to serve personally identifiable information (an employee's SSN), which is highly regulated data in the United States. There is no indication of authorization controls, data provenance, or compliance with privacy regulations. The endpoint may be a demonstration, placeholder, or test fixture rather than a production data source, but this cannot be confirmed from available materials.","tags":[],"capabilities":["x402-payment","usdc-base","employee-data","ssn-lookup","pay-per-call","json-response"],"categories":["data","pii"],"synonyms":["social security number API","employee SSN lookup","PII endpoint","x402 employee data","Base USDC micropayment API"],"warnings":["Endpoint purports to serve Social Security Numbers — highly regulated PII in the US. No compliance, authorization, or data provenance information is available.","No request body schema or response schema documented; actual behavior after payment is unknown.","Documentation pages (/docs, /api, /pricing, /README) all returned only 'Connect wallet' with no technical content.","This may be a demo, test, or placeholder endpoint — treat returned data with extreme caution.","Unknown whether the SSN data is real, synthetic, or fabricated."],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/198/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/198/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 captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation on request body, response schema, or data provenance. The endpoint claims to serve highly sensitive PII (SSN) with no visible compliance or authorization framework. Docs pages are empty beyond a wallet-connect 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'000':81 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':69 '198':46 '20':80 '6':89 'Base USDC micropayment API' 'PII endpoint' 'accept':53 'actual':149 'ai/ml':108 'analyt':107 'api':104,122 'author':197 'avail':228 'base':9,23,64,82 'behind':47 'beyond':132 'bodi':154 'broad':97 'call':103 'cannot':224 'catalog':98 'challeng':75 'commit':129 'complianc':202 'concern':171 'confirm':226 'connect':139 'contract':68 'control':198 'data':4,18,39,106,163,187,199,220 'decim':90 'demonstr':211 'detail':146 'document':130 'employe':2,16,34,43,180 'employee SSN lookup' 'employee-data' 'endpoint':30,52,168,207 'exact':73 'exact-schem':72 'field':155 'financ':110 'fixtur':215 'given':86 'high':185 'host':95 'i.e':84 'id':45 'identifi':177 'indic':195 'infer':109 'inform':178 'json':58 'json-response' 'key':123 'land':134 'limit':126 'lowpaymentfee.com':32,94 'materi':229 'maximum':78 'may':208 'micropay':7,21 'natur':158 'network':10,24,65 'number':37 'page':131,135 'pay':101 'pay-per-cal':100 'pay-per-call' 'payment':59 'paywal':50 'per':13,27,102,118 'person':176 'placehold':212 'post':54,153 'price':115 'privaci':204 'product':219 'prompt':141 'proven':200 'provid':92 'purport':173 'rais':169 'rate':125 'rather':216 'record':44 'regul':186,205 'request':14,28,55,119 'requir':76,152 'respons':150 'retriev':1,15 'return':33,57,136,161 'schema':151 'scheme':74 'secur':36 'serv':175 'servic':113 'settl':61 'signific':170 'site':93 'social':35 'social security number API' 'sourc':221 'span':105 'specif':42,167 'ssn':3,17,38,162,182 'ssn-lookup' 'state':191 'technic':145 'test':214 'unit':83,190 'unknown':165 'usdc':67,87 'usdc-base' 'use':66 'util':112 'via':5,19 'wallet':140 'x402':6,20,49 'x402 employee data' 'x402-payment'","prices":[{"id":"e9053684-ec34-4e92-bca9-95e8cb225857","listingId":"4d65923c-e271-4915-b19f-5515641465cf","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/198/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":"2026-04-21T18:32:16.289Z"}],"sources":[{"listingId":"4d65923c-e271-4915-b19f-5515641465cf","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/198/ssn","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:16.289Z","lastSeenAt":"2026-04-24T15:03:30.928Z"}],"details":{"listingId":"4d65923c-e271-4915-b19f-5515641465cf","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/198/ssn \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge requiring 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/employees/198/ssn"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/employees/198/ssn"},{"claim":"All APIs on the site are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving employee SSN records behind a micropayment wall","Demonstrating x402 payment protocol integration","Testing pay-per-call PII data access patterns"],"bestFor":["Developers experimenting with x402 protocol on Base","Testing micropayment-gated API flows"],"notFor":["Production PII handling without verified compliance and authorization","Any use case requiring GDPR, CCPA, or HIPAA compliance guarantees","Accessing real employee SSNs without proper legal authority"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:15.379Z"},"updatedAt":"2026-04-24T15:03:30.928Z"}}