{"id":"291c5e79-c74c-413f-b580-ec1e2bff391e","shortId":"JPRVAH","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 (ID 138) 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 hosts a broad catalog of endpoints spanning data analytics, AI/ML inference, finance, and utility services, all using the same x402 payment mechanism.\n\nNo OpenAPI schema, request body documentation, or response examples were found in the crawl. The docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content. The endpoint path suggests it returns PII (a Social Security Number), which raises significant regulatory and ethical concerns. There is no documentation describing what input the POST body expects or what fields the response contains beyond the declared mimeType of application/json.","tags":[],"capabilities":["x402-payment","usdc-base","employee-data","ssn-lookup","json-response","per-request-micropayment"],"categories":["data","pii"],"synonyms":["social security number API","employee SSN lookup","PII endpoint","x402 data access","Base USDC micropayment API","employee record API"],"warnings":["Endpoint returns Personally Identifiable Information (Social Security Numbers) — ensure compliance with all applicable privacy laws (CCPA, GDPR, SOC 2, etc.) before use.","No request body schema or response schema documented anywhere in the crawl.","Docs, pricing, API, and README pages all returned only 'Connect wallet' with no substantive documentation.","The endpoint is hardcoded to employee ID 138; it is unclear whether other employee IDs are supported or how to discover them.","No terms of service, privacy policy, or data handling documentation found."],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/138/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/138/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 captured) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on request/response schema, no OpenAPI spec, and the docs pages are empty. The endpoint serves highly sensitive PII (SSN) with no visible compliance or access-control documentation, which is a major red 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'0.02':12,26,94,105 '000':81 '0x8335':86 '138':46 '20':80 '2913':87 '6':90 'Base USDC micropayment API' 'PII endpoint' 'accept':53 'access':123 'across':109 'advertis':76 'ai/ml':135 'analyt':134 'api':112,116,164 'application/json':220 'base':9,23,66,82,89 'behind':47 'beyond':215 'bodi':152,207 'broad':128 'catalog':129 'challeng':75 'concern':197 'confirm':102 'connect':173 'contain':214 'content':179 'crawl':161 'data':4,18,39,133 'decim':91 'declar':217 'describ':202 'doc':163 'document':153,201 'employe':2,16,34,43 'employee SSN lookup' 'employee record API' 'employee-data' 'endpoint':30,52,113,131,181 'equal':93 'ethic':196 'exact':71 'exampl':156 'expect':208 'field':211 'financ':137 'flat':104 'found':158 'host':126 'id':45 'infer':136 'input':204 'instant':122 'json':58 'json-response' 'key':117 'land':100 'limit':120 'lowpaymentfee.com':32 'maxamountrequir':78 'mechan':147 'micropay':7,21 'mimetyp':218 'model':108 'network':10,24,67 'number':37,190 'openapi':149 'page':101,168 'path':182 'payment':59,146 'paywal':50 'per':13,27,95 'per-request-micropayment' 'pii':186 'post':54,206 'price':107,165 'prompt':175 'provid':98 'rais':192 'rate':119 'readm':167 'record':44 'regulatori':194 'request':14,28,55,96,151 'respons':155,213 'retriev':1,15 'return':33,57,170,185 'schema':150 'scheme':72 'secur':36,189 'servic':140 'settl':61 'signific':193 'site':125 'social':35,188 'social security number API' 'span':132 'specif':42 'ssn':3,17,38 'ssn-lookup' 'substant':178 'suggest':183 'unit':83 'usdc':63,85 'usdc-base' 'use':68,142 'util':139 'via':5,19 'wallet':174 'x402':6,20,49,70,74,145 'x402 data access' 'x402-payment'","prices":[{"id":"29472794-0dc8-4808-91f8-1035bee2e976","listingId":"291c5e79-c74c-413f-b580-ec1e2bff391e","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/138/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":"2026-04-21T18:32:14.213Z"}],"sources":[{"listingId":"291c5e79-c74c-413f-b580-ec1e2bff391e","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/138/ssn","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:14.213Z","lastSeenAt":"2026-04-25T04:03:57.521Z"}],"details":{"listingId":"291c5e79-c74c-413f-b580-ec1e2bff391e","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/138/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/138/ssn"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/employees/138/ssn"},{"claim":"Flat $0.02 per request pricing across all endpoints, no API keys, no rate limits","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving employee SSN data for payroll or HR integrations","Programmatic access to sensitive employee identifiers","Agent-driven identity verification workflows"],"bestFor":["Developers needing pay-per-call access to employee PII without API key management","x402-compatible agents on Base network","Micropayment-gated data retrieval"],"notFor":["Use cases requiring bulk employee data export (single-record endpoint)","Scenarios where handling SSN data would violate privacy regulations (GDPR, CCPA, etc.)","Users who need detailed API documentation or response schema guarantees"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:18.277Z"},"updatedAt":"2026-04-25T04:03:57.521Z"}}