{"id":"2fda65bb-d141-40df-a7d0-a373bf252bd2","shortId":"GGUKE5","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 119) 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 site also offers a broad catalog of other endpoints spanning data analytics, AI/ML inference, finance, and utility services, all at the same price point.\n\nDocumentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The nature of the data returned (employee SSN) raises significant regulatory and privacy concerns. It is unclear whether this is synthetic/demo data or real PII.","tags":[],"capabilities":["x402-payment","usdc-base","employee-data","ssn-lookup","per-request-micropayment","json-response"],"categories":["data","pii"],"synonyms":["employee SSN API","social security number lookup","employee PII endpoint","x402 data API","Base USDC micropayment API"],"warnings":["Endpoint returns employee SSN data — this is highly sensitive PII. No compliance, privacy policy, or data provenance documentation is available.","It is unknown whether this is real or synthetic/demo data.","No request body schema or response schema documented anywhere.","All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no useful content.","Regulated data category (PII/SSN) — verify legal compliance before use."],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/119/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/119/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 zero documentation on request/response format, no OpenAPI spec, no examples, and the docs pages are empty. The endpoint deals with SSN data which raises serious regulatory red flags without any compliance 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'/docs':153 '/pricing':154 '/readme':157 '/request':105 '0.02':12,26,93,104 '000':80 '0x8335':85 '119':45 '20':79 '2913':86 '6':89 'Base USDC micropayment API' 'accept':52 'access':122 'across':108 'advertis':75 'ai/ml':136 'also':125 'analyt':135 'api':111,115 'avail':183 'base':9,23,65,81,88 'behind':46 'broad':128 'catalog':129 'challeng':74 'concern':197 'confirm':101 'connect':163 'content':169 'data':4,18,39,134,188,205 'decim':90 'document':148,178 'employe':2,16,34,43,190 'employee PII endpoint' 'employee SSN API' 'employee-data' 'endpoint':30,51,112,132 'equal':92 'exact':70 'exampl':181 'extrem':150 'financ':138 'flat':103 'id':44 'infer':137 'instant':121 'json':57 'json-response' 'key':116 'land':99 'limit':119 'lowpaymentfee.com':32 'maxamountrequir':77 'micropay':7,21 'model':107 'natur':185 'network':10,24,66 'number':37 'offer':126 'openapi':173 'page':100,158 'payload':182 'payment':58 'paywal':49 'per':13,27,94 'per-request-micropayment' 'pii':208 'point':147 'post':53 'price':106,146 'privaci':196 'prompt':165 'provid':97 'rais':192 'rate':118 'real':207 'regulatori':194 'render':160 'request':14,28,54,95 'request/response':176 'retriev':1,15 'return':33,56,189 'schema':177 'scheme':71 'secur':36 'servic':141 'settl':60 'signific':193 'site':124 'social':35 'social security number lookup' 'span':133 'spars':151 'spec':174 'specif':42 'ssn':3,17,38,191 'ssn-lookup' 'synthetic/demo':204 'unclear':200 'unit':82 'usdc':62,84 'usdc-base' 'use':67 'util':140 'via':5,19 'wallet':164 'whether':201 'x402':6,20,48,69,73 'x402 data API' 'x402-payment'","prices":[{"id":"9bd7aa0a-3b00-4416-b90e-102c731e6f0f","listingId":"2fda65bb-d141-40df-a7d0-a373bf252bd2","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/119/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":"2026-04-21T18:32:13.755Z"}],"sources":[{"listingId":"2fda65bb-d141-40df-a7d0-a373bf252bd2","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/119/ssn","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:13.755Z","lastSeenAt":"2026-04-25T08:33:44.537Z"}],"details":{"listingId":"2fda65bb-d141-40df-a7d0-a373bf252bd2","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/119/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/119/ssn"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/employees/119/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 render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving employee SSN data for payroll or HR integrations","Demonstrating x402 micropayment protocol usage on Base","Testing pay-per-call API patterns with USDC"],"bestFor":["Developers experimenting with x402 payment protocol","Testing micropayment-gated API access on Base network","Prototyping pay-per-request data retrieval flows"],"notFor":["Production use involving real PII without compliance review","Users needing documented request/response schemas","Anyone requiring bulk or subscription-based data access"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:18.936Z"},"updatedAt":"2026-04-25T08:33:44.537Z"}}