{"id":"9f954048-1a5d-4a3c-9a10-7cf28282e1aa","shortId":"MguMsv","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 (ID 194) behind an x402 paywall. The endpoint accepts POST requests and returns JSON. Payment is settled in USDC on the Base network using the x402 \"exact\" scheme.\n\nThe x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals), which equals $0.02 per request. The provider's landing page confirms a flat $0.02/request pricing model across all their API endpoints, with no API keys, no rate limits, and instant access. The endpoint was live at probe time, returning a valid 402 challenge.\n\nThis endpoint is part of a broader API platform (lowpaymentfee.com) that also offers data analytics, AI/ML inference, finance/crypto, and utility endpoints — all at the same $0.02 price point. Documentation beyond the landing page is extremely thin; the /docs, /api, /pricing, and /README pages all returned only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no explanation of what input the POST body expects or what the response payload looks like beyond the stated mimeType of application/json.","tags":[],"capabilities":["x402-payment","usdc-base","employee-ssn-lookup","json-response","per-request-micropayment"],"categories":["data","pii"],"synonyms":["employee SSN API","social security number lookup","PII endpoint","x402 data API","Base USDC micropayment API","employee data retrieval"],"warnings":["Endpoint appears to serve Personally Identifiable Information (SSN) — regulated data under laws like HIPAA, CCPA, and various state/federal privacy statutes. Verify legal compliance before use.","No request body schema or response schema documented anywhere; integration requires blind experimentation.","All documentation pages (/docs, /api, /pricing, /README) returned only 'Connect wallet' with no content.","The endpoint is scoped to a single hardcoded employee ID (194); unclear if other employee IDs are supported or how to discover them.","No OpenAPI specification or ai-plugin manifest available."],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/194/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/194/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 and returns a valid x402 402 challenge, but there is zero documentation on request format, response schema, or what data is actually returned. The /docs and related pages are empty. The endpoint path suggests it returns highly sensitive PII (SSN), which raises serious regulatory and ethical concerns. No OpenAPI spec or examples are 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'/docs':172 '/pricing':174 '/readme':176 '/request':105 '0.02':12,26,93,104,160 '000':80 '0x8335':85 '194':45 '20':79 '2913':86 '402':133 '6':89 'Base USDC micropayment API' 'PII endpoint' 'accept':52 'access':122 'across':108 'advertis':75 'ai/ml':150 'also':146 'analyt':149 'api':111,115,142 'application/json':220 'base':9,23,65,81,88 'behind':46 'beyond':164,215 'bodi':206 'broader':141 'challeng':74,134 'confirm':101 'connect':182 'content':188 'data':4,18,39,148 'decim':90 'document':163,197 'employe':2,16,34,43 'employee SSN API' 'employee data retrieval' 'employee-ssn-lookup' 'endpoint':30,51,112,124,136,155 'equal':92 'exact':70 'expect':207 'explan':200 'extrem':169 'finance/crypto':152 'flat':103 'id':44 'infer':151 'input':203 'instant':121 'json':57 'json-response' 'key':116 'land':99,166 'like':214 'limit':119 'live':126 'look':213 'lowpaymentfee.com':32,144 'maxamountrequir':77 'micropay':7,21 'mimetyp':218 'model':107 'network':10,24,66 'number':37 'offer':147 'openapi':192 'page':100,167,177 'part':138 'payload':212 'payment':58 'paywal':49 'per':13,27,94 'per-request-micropayment' 'platform':143 'point':162 'post':53,205 'price':106,161 'probe':128 'prompt':184 'provid':97 'rate':118 'request':14,28,54,95 'request/response':195 'respons':211 'retriev':1,15 'return':33,56,130,179 'schema':196 'scheme':71 'secur':36 'settl':60 'social':35 'social security number lookup' 'spec':193 'specif':42 'ssn':3,17,38 'state':217 'substant':187 'thin':170 'time':129 'unit':82 'usdc':62,84 'usdc-base' 'use':67 'util':154 'valid':132 'via':5,19 'wallet':183 'x402':6,20,48,69,73 'x402 data API' 'x402-payment'","prices":[{"id":"1f583d07-9b62-4e96-b190-328f81fcf373","listingId":"9f954048-1a5d-4a3c-9a10-7cf28282e1aa","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/194/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":"2026-04-21T18:32:15.949Z"}],"sources":[{"listingId":"9f954048-1a5d-4a3c-9a10-7cf28282e1aa","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/194/ssn","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:15.949Z","lastSeenAt":"2026-04-24T17:34:04.353Z"}],"details":{"listingId":"9f954048-1a5d-4a3c-9a10-7cf28282e1aa","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/194/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":"x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/employees/194/ssn"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/employees/194/ssn"},{"claim":"Flat pricing of $0.02 per request across all endpoints, no API keys, no rate limits","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /api, /pricing, /README) contain only 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving employee SSN data for payroll or HR integrations","Programmatic access to sensitive employee identifiers behind a paywall","Agent-driven lookups of employee PII with per-call payment"],"bestFor":["Developers needing on-demand SSN retrieval without API key management","Automated agents that can settle x402 payments on Base","Low-volume, pay-per-use access to employee PII"],"notFor":["Bulk data exports of employee records (no batch endpoint documented)","Users who cannot transact in USDC on the Base network","Anyone requiring detailed API documentation or schema guarantees before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:15.874Z"},"updatedAt":"2026-04-24T17:34:04.353Z"}}