{"id":"d61aabe6-1fed-4d1d-b3f4-9649fecef128","shortId":"gnXZQ5","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 behind an x402 paywall. The specific resource `/api/v1/employees/1/ssn` is accessed via POST and costs $0.02 per request, paid in USDC on the Base network. The x402 challenge confirms the endpoint is live and accepting payments.\n\nThe broader lowpaymentfee.com platform offers a variety of x402-gated API endpoints across categories including data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance and crypto data (price feeds, exchange rates, gas estimates), and infrastructure utilities (geocoding, validation, conversion). All endpoints are advertised at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.\n\nHowever, this particular endpoint deals with sensitive personally identifiable information (SSN). The legitimacy and legality of serving SSN data through a public pay-per-call API is highly questionable. There is no documentation explaining the data source, authorization model, or compliance framework. The docs, pricing, and API pages all returned only a \"Connect wallet\" prompt with no substantive content. Users should exercise extreme caution.","tags":[],"capabilities":["x402-payment","usdc-base-network","employee-data","ssn-lookup","pay-per-request","no-api-key"],"categories":["data","pii"],"synonyms":["social security number API","employee SSN lookup","PII endpoint","x402 data API","Base USDC micropayment API"],"warnings":["This endpoint claims to serve Social Security Numbers (SSN), which is highly sensitive PII. No compliance framework, data source, or authorization model is documented.","Serving SSN data via a public pay-per-call API with no authentication beyond payment raises serious legal and ethical concerns.","No request or response schema is documented; the docs, pricing, and API pages all returned only 'Connect wallet' with no content.","The data may be synthetic/demo data, but this is not stated anywhere."],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/1/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/1/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 confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on request/response schemas, no OpenAPI spec, and the docs pages are empty. The endpoint serves highly sensitive PII (SSN) with no visible compliance or authorization framework, which is a major red 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'0.02':12,26,54,121 'Base USDC micropayment API' 'PII endpoint' 'accept':73 'access':49 'across':88 'advertis':119 'ai/ml':93 'analysi':96 'analyt':92 'api':86,126,162,183 'author':174 'base':9,23,62 'behind':40 'broader':76 'call':161 'categori':89 'caution':200 'challeng':66 'classif':98 'commit':134 'complianc':177 'confirm':67 'connect':189 'content':195 'convers':115 'cost':53 'crypto':102 'data':4,18,39,91,103,154,172 'deal':140 'doc':180 'document':169 'embed':99 'employe':2,16,34 'employee SSN lookup' 'employee-data' 'endpoint':30,69,87,117,139 'estim':109 'exchang':106 'exercis':198 'explain':170 'extrem':199 'feed':105 'financ':100 'framework':178 'gas':108 'gate':85 'geocod':113 'high':164 'howev':136 'identifi':144 'includ':90 'infer':94 'inform':145 'infrastructur':111 'key':127 'legal':150 'legitimaci':148 'limit':130 'live':71 'lowpaymentfee.com':32,77 'micropay':7,21 'minimum':133 'model':175 'network':10,24,63 'no-api-key' 'number':37 'offer':79 'page':184 'paid':57 'particular':138 'pay':159 'pay-per-cal':158 'pay-per-request' 'payment':74 'paywal':43 'per':13,27,55,122,160 'person':143 'platform':78 'post':51 'price':104,181 'prompt':191 'public':157 'question':165 'rate':107,129 'request':14,28,56,123 'requir':135 'resourc':46 'retriev':1,15 'return':33,186 'secur':36 'sensit':142 'sentiment':95 'serv':152 'social':35 'social security number API' 'sourc':173 'specif':45 'ssn':3,17,38,146,153 'ssn-lookup' 'substant':194 'summar':97 'usdc':59 'usdc-base-network' 'user':196 'util':112 'valid':114 'varieti':81 'via':5,19,50 'wallet':190 'x402':6,20,42,65,84 'x402 data API' 'x402-gated':83 'x402-payment'","prices":[{"id":"4dc6dc51-fbf0-4898-846e-0fd09da22150","listingId":"d61aabe6-1fed-4d1d-b3f4-9649fecef128","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/1/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":"2026-04-21T18:32:13.060Z"}],"sources":[{"listingId":"d61aabe6-1fed-4d1d-b3f4-9649fecef128","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/1/ssn","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:13.060Z","lastSeenAt":"2026-04-25T13:03:36.280Z"}],"details":{"listingId":"d61aabe6-1fed-4d1d-b3f4-9649fecef128","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/1/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":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/employees/1/ssn"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"The asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 corresponds to USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/employees/1/ssn"}],"useCases":["Retrieving employee SSN data programmatically (if authorized)","Demonstrating x402 payment protocol integration","Testing micropayment-gated API access on Base network"],"bestFor":["Developers testing x402 protocol implementations","Exploring pay-per-call API patterns on Base"],"notFor":["Production use involving real PII without verified compliance and authorization","Any use case requiring GDPR, HIPAA, or SOC 2 compliance guarantees","Unauthorized access to personal data"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:19.849Z"},"updatedAt":"2026-04-25T13:03:36.280Z"}}