{"id":"f086d7de-5a3e-4d97-a7c4-51f1187f9985","shortId":"S9nWHH","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 106) behind an x402 paywall. It accepts POST requests and settles payments in USDC on the Base network. The x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (6 decimals), which equals $0.02 per request.\n\nThe provider lowpaymentfee.com hosts a broad catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services — all priced at $0.02 per request with no API keys, no rate limits, and no commitments. This particular endpoint is part of what appears to be a demo or sample employee data service. The endpoint is live and returns a proper 402 challenge with x402 version 1.\n\nDocumentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what fields the response contains beyond the path implying SSN data. The nature of the data (whether synthetic/demo or real PII) is not documented.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","employee-data","ssn-lookup","pay-per-call","no-api-key"],"categories":["data","pii"],"synonyms":["social security number API","employee SSN lookup","PII endpoint","employee data API","x402 data access","micropayment API","Base USDC API"],"warnings":["Endpoint serves SSN (PII/sensitive) data — verify regulatory compliance (FCRA, GLBA, state privacy laws) before use.","No documentation on whether data is real or synthetic/demo.","No OpenAPI schema or response examples available.","Docs, API, pricing, and README pages all returned only 'Connect wallet' with no substantive content.","Single hardcoded employee ID (106) in the path — unclear if other IDs are supported."],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/106/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/106/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 no OpenAPI schema, no request/response examples, and no meaningful documentation beyond the landing page listing. The nature of the data (real vs. synthetic) is undocumented, which is a significant concern given the PII 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'000':71 '1':152 '106':45 '20':70 '402':147 '6':76 'Base USDC API' 'PII endpoint' 'accept':51 'advertis':66 'ai/ml':99 'analyt':98 'api':95,114,160 'appear':129 'base':9,23,61,72 'base-network' 'behind':46 'beyond':193 'broad':88 'call':94 'catalog':89 'challeng':65,148 'commit':121 'connect':169 'contain':192 'content':175 'crawl':158 'crypto':102 'data':4,18,39,97,137,198,203 'decim':77 'demo':133 'descript':186 'doc':159 'document':153,211 'employe':2,16,34,43,136 'employee SSN lookup' 'employee data API' 'employee-data' 'endpoint':30,124,140 'equal':79 'exampl':183 'extrem':155 'field':189 'financ':101 'host':86 'id':44 'impli':196 'infer':100 'key':115 'limit':118 'live':142 'lowpaymentfee.com':32,85 'maxamountrequir':68 'micropay':7,21 'micropayment API' 'natur':200 'network':10,24,62 'no-api-key' 'number':37 'openapi':179 'page':164 'part':126 'particular':123 'path':195 'pay':92 'pay-per-cal':91 'pay-per-call' 'payment':56 'paywal':49 'per':13,27,81,93,110 'pii':208 'post':52 'price':107,161 'prompt':171 'proper':146 'provid':84 'rate':117 'readm':163 'real':207 'request':14,28,53,82,111 'request/response':182 'respons':191 'retriev':1,15 'return':33,144,166 'sampl':135 'schema':180 'secur':36 'servic':105,138 'settl':55 'social':35 'social security number API' 'span':96 'spars':156 'specif':42 'ssn':3,17,38,197 'ssn-lookup' 'substant':174 'synthetic/demo':205 'unit':73 'usdc':58,75 'usdc-settlement' 'util':104 'version':151 'via':5,19 'wallet':170 'whether':204 'x402':6,20,48,64,150 'x402 data access' 'x402-payment'","prices":[{"id":"d88738eb-fc25-4600-abe0-386749cd17d8","listingId":"f086d7de-5a3e-4d97-a7c4-51f1187f9985","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/106/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":"2026-04-21T18:32:13.407Z"}],"sources":[{"listingId":"f086d7de-5a3e-4d97-a7c4-51f1187f9985","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/106/ssn","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:13.407Z","lastSeenAt":"2026-04-25T10:03:59.250Z"}],"details":{"listingId":"f086d7de-5a3e-4d97-a7c4-51f1187f9985","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/106/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 x402 version 1, accepting USDC on Base network with maxAmountRequired of 20000 base units.","source_url":"https://lowpaymentfee.com/api/v1/employees/106/ssn"},{"claim":"The provider advertises $0.02 per request pricing with no API keys, no rate limits, and instant access.","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/employees/106/ssn"}],"useCases":["Retrieving employee SSN data programmatically with per-call payment","Demonstrating x402 protocol micropayment flows","Integrating pay-per-use PII lookups into agent workflows"],"bestFor":["Developers exploring x402 protocol integration","Agents needing on-demand employee data retrieval with crypto micropayments","Testing pay-per-call API patterns on Base network"],"notFor":["Production PII handling without verifying data authenticity and compliance","Bulk data export or batch SSN lookups (no documented batch support)","Users who cannot transact in USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:19.39Z"},"updatedAt":"2026-04-25T10:03:59.250Z"}}