{"id":"92483c4f-be9d-44aa-8944-03f2973d150f","shortId":"VaAv7u","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 (employee ID 52) behind an x402 paywall. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum cost of $0.02 per request (20,000 base units at 6 decimals).\n\nThe provider lowpaymentfee.com hosts a broad catalog of x402-gated APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services, all priced at $0.02 per call. No API keys or rate limits are advertised; access is granted purely via the x402 payment header. The site states \"pay only for what you use\" with no minimums or commitments.\n\nThis specific endpoint is narrowly scoped: it serves SSN data for a single employee record. There is no documentation on request body schema, available query parameters, or the structure of the response beyond the MIME type (application/json). The endpoint's nature — returning personally identifiable information (SSN) — raises significant regulatory and ethical concerns. Prospective consumers should verify that their use complies with applicable privacy laws (e.g., FCRA, state SSN protection statutes, GDPR if applicable).","tags":[],"capabilities":["x402-payment","usdc-base","employee-data","ssn-lookup","json-response","no-api-key","per-request-pricing"],"categories":["data","pii"],"synonyms":["social security number API","employee SSN lookup","PII endpoint","x402 data API","Base USDC micropayment","employee record API","SSN retrieval"],"warnings":["Endpoint returns personally identifiable information (SSN) — verify legal compliance before use.","No response schema or example response is documented anywhere.","All documentation pages (docs, pricing, README, api) render only 'Connect wallet' with no substantive content.","No evidence of security certifications, access controls, or audit logging for PII access.","Endpoint is hardcoded to employee ID 52 — unclear if other employee IDs are supported or if this is a demo."],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/52/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/52/ssn","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 captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation on request/response schemas, no OpenAPI spec, no example responses, and the docs/pricing/README pages are all blank ('Connect wallet' only). The endpoint serves highly sensitive PII with no visible compliance or authorization 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'000':81 '0x8335':70 '20':80 '2913':71 '52':47 '6':85 'Base USDC micropayment' 'PII endpoint' 'SSN retrieval' 'accept':54 'access':123 'advertis':122 'ai/ml':102 'analyt':101 'api':98,116 'applic':207,218 'application/json':182 'avail':169 'base':9,23,65,82 'behind':48 'beyond':178 'bodi':167 'broad':92 'call':114 'catalog':93 'commit':145 'compli':205 'concern':197 'consum':199 'contract':69 'cost':75 'crypto':105 'data':4,18,39,100,155 'decim':86 'document':164 'e.g':210 'employe':2,16,34,43,45,159 'employee SSN lookup' 'employee record API' 'employee-data' 'endpoint':30,53,148,184 'ethic':196 'fcra':211 'financ':104 'gate':97 'gdpr':216 'grant':125 'header':131 'host':90 'id':46 'identifi':189 'infer':103 'inform':190 'json':59 'json-response' 'key':117 'law':209 'limit':120 'lowpaymentfee.com':32,89 'maximum':74 'micropay':7,21 'mime':180 'minimum':143 'narrowli':150 'natur':186 'network':10,24,66 'no-api-key' 'number':37 'paramet':171 'pay':135 'payment':60,130 'paywal':51 'per':13,27,78,113 'per-request-pricing' 'person':188 'post':55 'price':110 'privaci':208 'prospect':198 'protect':214 'provid':88 'pure':126 'queri':170 'rais':192 'rate':119 'record':44,160 'regulatori':194 'request':14,28,56,79,166 'respons':177 'retriev':1,15 'return':33,58,187 'schema':168 'scope':151 'secur':36 'serv':153 'servic':108 'settl':62 'signific':193 'singl':158 'site':133 'social':35 'social security number API' 'span':99 'specif':42,147 'ssn':3,17,38,154,191,213 'ssn-lookup' 'state':134,212 'statut':215 'structur':174 'type':181 'unit':83 'usdc':68 'usdc-base' 'use':67,140,204 'util':107 'verifi':201 'via':5,19,127 'x402':6,20,50,96,129 'x402 data API' 'x402-gated':95 'x402-payment'","prices":[{"id":"b176121b-0ab8-4491-8571-13fb59944f24","listingId":"92483c4f-be9d-44aa-8944-03f2973d150f","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/52/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":"2026-04-21T18:32:17.036Z"}],"sources":[{"listingId":"92483c4f-be9d-44aa-8944-03f2973d150f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/52/ssn","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:17.036Z","lastSeenAt":"2026-04-24T10:33:55.543Z"}],"details":{"listingId":"92483c4f-be9d-44aa-8944-03f2973d150f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/52/ssn \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\"","exampleRequest":{"url":"https://lowpaymentfee.com/api/v1/employees/52/ssn","method":"POST","headers":{"X-PAYMENT":"<x402_payment_token>","Content-Type":"application/json"}},"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge advertising USDC on Base at maxAmountRequired 20000","source_url":"https://lowpaymentfee.com/api/v1/employees/52/ssn"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/employees/52/ssn"},{"claim":"Site advertises $0.02 per request, no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving SSN for a known employee record in an authorized payroll or HR workflow","Demonstrating x402 micropayment integration on Base network","Testing pay-per-call API patterns with low-cost endpoints"],"bestFor":["Developers experimenting with x402 payment protocol on Base","Authorized HR or payroll systems needing on-demand SSN retrieval","Agent-based workflows that settle per-call payments in USDC"],"notFor":["Bulk PII harvesting or unauthorized background checks","Use cases requiring compliance certifications (SOC 2, HIPAA) — no evidence the provider holds any","Production systems needing documented response schemas or SLAs"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:14.291Z"},"updatedAt":"2026-04-24T10:33:55.543Z"}}