{"id":"431f4ba7-74be-4e88-9439-14dd158431c9","shortId":"7WR6QU","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 16). It is part of a broader suite of x402-protocol APIs offered by the provider, all priced at $0.02 per request and settled in USDC on the Base network. The endpoint uses the x402 payment protocol: callers receive a 402 challenge and must include an X-PAYMENT header with a valid payment proof to access the resource.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. The maximum amount required is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimal places. No API keys or rate limits are advertised; access is gated purely by per-request micropayment. The response MIME type is application/json.\n\nImportant caveat: this endpoint purports to return SSN data, which is highly sensitive personally identifiable information (PII). The provider's documentation is extremely sparse — the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no further detail. There is no OpenAPI schema, no example request/response, and no information about the data source, accuracy, or legal basis for distributing SSN data. Prospective users should exercise extreme caution and verify compliance with applicable privacy and data protection regulations before using this endpoint.","tags":[],"capabilities":["x402-payment","usdc-base-network","employee-data-lookup","ssn-retrieval","per-request-micropayment","json-response"],"categories":["data","pii"],"synonyms":["social security number API","employee SSN lookup","x402 employee data","paid SSN endpoint","Base USDC micropayment API","employee PII retrieval"],"warnings":["Endpoint claims to return Social Security Number data — highly regulated PII. No information on data source, legal basis, or compliance with privacy laws (e.g., FCRA, GLBA, state privacy statutes).","Documentation is effectively nonexistent: docs, pricing, API, and README pages all show only 'Connect wallet' with no further content.","No OpenAPI schema or example responses available; actual response format is unknown.","Endpoint path is hardcoded to employee ID 16; unclear if other employee IDs are supported or if this is demo/test data.","No information about data accuracy, freshness, or whether this is synthetic/test data versus real PII."],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/16/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/16/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). However, there is no OpenAPI schema, no request/response examples, no documentation beyond a wallet-connect prompt, and the data being sold (SSN) raises serious regulatory red flags with zero provenance 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'000':125 '0x8335':130 '16':47 '20':124 '2913':131 '402':88 '6':140 'Base USDC micropayment API' 'accept':116 'access':104,151 'accuraci':223 'advertis':150 'amount':121 'api':59,144,193 'applic':241 'application/json':165 'base':9,23,76,126,133 'basi':226 'broader':53 'caller':85 'caution':236 'caveat':167 'challeng':89,109 'complianc':239 'confirm':110 'connect':201 'data':4,18,39,174,221,230,244 'decim':141 'detail':207 'distribut':228 'doc':191 'document':186 'employe':2,16,34,43,45 'employee PII retrieval' 'employee SSN lookup' 'employee-data-lookup' 'endpoint':30,79,112,169,250 'equal':135 'exampl':214 'exercis':234 'extrem':188,235 'gate':153 'given':137 'header':97 'high':177 'id':46 'identifi':180 'import':166 'includ':92 'inform':181,218 'json-response' 'key':145 'legal':225 'limit':148 'live':114 'lowpaymentfee.com':32 'maximum':120 'micropay':7,21,159 'mime':162 'must':91 'network':10,24,77 'number':37 'offer':60 'openapi':211 'page':196 'paid SSN endpoint' 'part':50 'payment':83,96,101 'per':13,27,68,157 'per-request':156 'per-request-micropayment' 'person':179 'pii':182 'place':142 'post':117 'price':65,192 'privaci':242 'prompt':203 'proof':102 'prospect':231 'protect':245 'protocol':58,84 'provid':63,184 'pure':154 'purport':170 'rate':147 'readm':195 'receiv':86 'record':44 'regul':246 'render':198 'request':14,28,69,118,158 'request/response':215 'requir':122 'resourc':106 'respons':161 'retriev':1,15 'return':33,172 'schema':212 'secur':36 'sensit':178 'settl':71 'social':35 'social security number API' 'sourc':222 'spars':189 'specif':42 'ssn':3,17,38,173,229 'ssn-retrieval' 'suit':54 'type':163 'unit':127 'usdc':73,129,138 'usdc-base-network' 'use':80,248 'user':232 'valid':100 'verifi':238 'via':5,19 'wallet':202 'x':95 'x-payment':94 'x402':6,20,57,82,108 'x402 employee data' 'x402-payment' 'x402-protocol':56","prices":[{"id":"9ecefae6-e478-45bc-a40a-d13fc1d71b57","listingId":"431f4ba7-74be-4e88-9439-14dd158431c9","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/16/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":"2026-04-21T18:32:14.978Z"}],"sources":[{"listingId":"431f4ba7-74be-4e88-9439-14dd158431c9","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/16/ssn","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:14.978Z","lastSeenAt":"2026-04-25T00:33:14.583Z"}],"details":{"listingId":"431f4ba7-74be-4e88-9439-14dd158431c9","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/16/ssn \\\n  -H \"X-PAYMENT: <x402-payment-proof>\" \\\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 x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/employees/16/ssn"},{"claim":"All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/employees/16/ssn"}],"useCases":["Retrieving SSN data for employee ID 16 via automated micropayment","Integrating employee identity verification into agent workflows","Demonstrating x402 protocol payment flows with real endpoints"],"bestFor":["Developers experimenting with x402 payment protocol on Base","Agents that need to programmatically pay for and retrieve structured data","Testing micropayment-gated API access patterns"],"notFor":["Production PII lookups without verified legal compliance and data provenance","Users who need bulk employee data across many IDs (only ID 16 is in this endpoint path)","Anyone seeking free or API-key-based access without crypto wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:17.28Z"},"updatedAt":"2026-04-25T00:33:14.583Z"}}