{"id":"167092bf-6989-4b72-a183-beb9d8a0952f","shortId":"CQGKTb","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 87) 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 platform (lowpaymentfee.com) that offers data & analytics, AI/ML inference, finance/Web3, and infrastructure utility APIs — all at the same $0.02 per-call price point. Documentation beyond the landing page is essentially empty (all sub-pages just show \"Connect wallet\"), so there is no schema documentation for request body format or response structure. The specific nature of the data returned (whether it is synthetic/demo data or real PII) is not documented.","tags":[],"capabilities":["x402-payment","usdc-base","employee-data","ssn-lookup","per-call-micropayment","json-response"],"categories":["data","pii"],"synonyms":["employee SSN API","social security number lookup","employee PII endpoint","x402 data API","micropayment employee data","Base USDC API"],"warnings":["Endpoint purports to return Social Security Number data — this is highly sensitive PII subject to strict regulations (e.g., FCRA, state privacy laws). Verify legal compliance before use.","No documentation exists for request body format or response schema — all doc pages are empty.","It is unclear whether this returns real, synthetic, or demo data. Do not assume authenticity.","Only a single hardcoded employee ID (87) is in the URL; it is unknown whether other IDs are supported.","No OpenAPI spec, no AI plugin manifest, no robots.txt, no agents.txt available."],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/87/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/87/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 (valid 402 challenge), pricing is clear ($0.02 USDC on Base), but there is zero documentation on request/response schema, no examples, and the nature of the data (real PII vs. synthetic demo) is completely undocumented. All doc pages return only 'Connect wallet' with no useful content. The endpoint deals with SSN data which raises serious regulatory and ethical 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'0.02':12,26,95,106,161 '000':82 '0x8335':87 '20':81 '2913':88 '402':135 '6':91 '87':47 'Base USDC API' 'accept':54 'access':124 'across':110 'advertis':77 'ai/ml':150 'analyt':149 'api':113,117,156 'base':9,23,67,83,90 'behind':48 'beyond':168 'bodi':191 'broader':143 'call':164 'challeng':76,136 'confirm':103 'connect':181 'data':4,18,39,148,201,207 'decim':92 'document':167,188,213 'employe':2,16,34,43,45 'employee PII endpoint' 'employee SSN API' 'employee-data' 'empti':174 'endpoint':30,53,114,126,138 'equal':94 'essenti':173 'exact':72 'finance/web3':152 'flat':105 'format':192 'id':46 'infer':151 'infrastructur':154 'instant':123 'json':59 'json-response' 'key':118 'land':101,170 'limit':121 'live':128 'lowpaymentfee.com':32,145 'maxamountrequir':79 'micropay':7,21 'micropayment employee data' 'model':109 'natur':198 'network':10,24,68 'number':37 'offer':147 'page':102,171,178 'part':140 'payment':60 'paywal':51 'per':13,27,96,163 'per-cal':162 'per-call-micropayment' 'pii':210 'platform':144 'point':166 'post':55 'price':108,165 'probe':130 'provid':99 'rate':120 'real':209 'record':44 'request':14,28,56,97,190 'respons':194 'retriev':1,15 'return':33,58,132,202 'schema':187 'scheme':73 'secur':36 'settl':62 'show':180 'social':35 'social security number lookup' 'specif':42,197 'ssn':3,17,38 'ssn-lookup' 'structur':195 'sub':177 'sub-pag':176 'synthetic/demo':206 'time':131 'unit':84 'usdc':64,86 'usdc-base' 'use':69 'util':155 'valid':134 'via':5,19 'wallet':182 'whether':203 'x402':6,20,50,71,75 'x402 data API' 'x402-payment'","prices":[{"id":"783b0088-aeab-4ed7-8b3e-a86d33aff3f6","listingId":"167092bf-6989-4b72-a183-beb9d8a0952f","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/87/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":"2026-04-21T18:32:17.633Z"}],"sources":[{"listingId":"167092bf-6989-4b72-a183-beb9d8a0952f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/87/ssn","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:17.633Z","lastSeenAt":"2026-04-24T06:33:03.240Z"}],"details":{"listingId":"167092bf-6989-4b72-a183-beb9d8a0952f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/87/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":"x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/employees/87/ssn"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/employees/87/ssn"},{"claim":"Flat pricing of $0.02 per request across all endpoints, no API keys, no rate limits","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving employee SSN data programmatically with per-call payment","Demonstrating x402 micropayment protocol integration on Base","Testing pay-per-call PII data access patterns"],"bestFor":["Developers experimenting with x402 payment protocol","Agents needing on-demand employee data behind a paywall","Prototyping micropayment-gated sensitive data access"],"notFor":["Production PII lookups without verifying data authenticity and compliance","Bulk employee data retrieval (no documented batch endpoint)","Users who need detailed API documentation or schema guarantees"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:13.385Z"},"updatedAt":"2026-04-24T06:33:03.240Z"}}