{"id":"3276df49-0bda-48dc-ad75-a663abbbc929","shortId":"WGWwUN","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 given employee ID, gated behind an x402 payment challenge. The specific resource probed is `/api/v1/employees/42/ssn`, which accepts POST requests and returns JSON. Payment is settled in USDC on the Base network at $0.02 per call (maxAmountRequired of 20,000 base units with 6 decimals = $0.02).\n\nThe provider lowpaymentfee.com hosts a broad catalog of x402-gated 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. However, the employee SSN endpoint is not listed on the provider's public landing page among the advertised API categories. This raises questions about the nature and legitimacy of the data returned.\n\nDocumentation is extremely sparse. The /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema beyond the x402 challenge's outputSchema stub, and no explanation of what data the SSN endpoint actually returns or what input it expects in the POST body. The endpoint is live (returns a valid 402 challenge), but the lack of documentation and the sensitive nature of SSN data warrant significant caution.","tags":[],"capabilities":["x402-payment","usdc-base-network","employee-data-lookup","ssn-retrieval","per-request-micropayment","json-response"],"categories":["data","identity"],"synonyms":["social security number API","employee SSN lookup","x402 employee data","paid SSN endpoint","Base USDC micropayment API","employee identity data"],"warnings":["Endpoint serves Social Security Number data — highly sensitive PII. No documentation on data source, compliance, or legal basis.","This specific endpoint (/api/v1/employees/42/ssn) is not listed among the provider's publicly advertised APIs.","All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no technical content.","No OpenAPI spec, no request body schema, no response schema available.","Verify data legitimacy and regulatory compliance (e.g., FCRA, state privacy laws) before any production use."],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/42/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/42/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 and returns a valid x402 402 challenge, but documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. No request/response schema, no examples, and the SSN endpoint isn't listed among the provider's advertised APIs. The sensitive nature of SSN data with no provenance or compliance information is a significant 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'/api/v1/employees/42/ssn':56 '/docs':162 '/pricing':163 '/readme':166 '0.02':12,26,74,86,112 '000':80 '20':79 '402':222 '6':84 'Base USDC micropayment API' 'accept':58 'actual':204 'advertis':142 'ai/ml':102 'among':140 'analyt':101 'api':98,117,143 'base':9,23,71,81 'behind':46 'beyond':188 'bodi':214 'broad':92 'call':76 'catalog':93 'categori':144 'caution':238 'challeng':50,191,223 'commit':124 'connect':172 'crypto':105 'data':4,18,39,100,155,200,235 'decim':85 'detail':179 'document':157,228 'employe':2,16,34,43,127 'employee SSN lookup' 'employee identity data' 'employee-data-lookup' 'endpoint':30,129,203,216 'expect':210 'explan':197 'extrem':159 'financ':104 'gate':45,97 'given':42 'host':90 'howev':125 'id':44 'infer':103 'input':208 'json':63 'json-response' 'key':118 'lack':226 'land':138 'legitimaci':152 'limit':121 'list':132 'live':218 'lowpaymentfee.com':32,89 'maxamountrequir':77 'micropay':7,21 'natur':150,232 'network':10,24,72 'number':37 'openapi':183 'outputschema':193 'page':139,167 'paid SSN endpoint' 'payment':49,64 'per':13,27,75,113 'per-request-micropayment' 'post':59,213 'price':110 'probe':54 'prompt':174 'provid':88,135 'public':137 'question':147 'rais':146 'rate':120 'render':169 'request':14,28,60,114 'request/response':186 'resourc':53 'retriev':1,15 'return':33,62,156,205,219 'schema':187 'secur':36 'sensit':231 'servic':108 'settl':66 'signific':237 'social':35 'social security number API' 'span':99 'spars':160 'spec':184 'specif':52 'ssn':3,17,38,128,202,234 'ssn-retrieval' 'stub':194 'technic':178 'unit':82 'usdc':68 'usdc-base-network' 'util':107 'valid':221 'via':5,19 'wallet':173 'warrant':236 'x402':6,20,48,96,190 'x402 employee data' 'x402-gated':95 'x402-payment'","prices":[{"id":"6323a24c-e3a7-4cb2-9204-ee29f6534511","listingId":"3276df49-0bda-48dc-ad75-a663abbbc929","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/42/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":"2026-04-21T18:32:16.720Z"}],"sources":[{"listingId":"3276df49-0bda-48dc-ad75-a663abbbc929","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/42/ssn","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:16.720Z","lastSeenAt":"2026-04-24T12:04:38.976Z"}],"details":{"listingId":"3276df49-0bda-48dc-ad75-a663abbbc929","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/42/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":"The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/employees/42/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":"The USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is on Base network","source_url":"https://lowpaymentfee.com/api/v1/employees/42/ssn"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) show only 'Connect wallet'","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving employee SSN data programmatically via micropayment","Integrating employee identity lookups into payroll or HR workflows","Demonstrating x402 payment-gated API access on Base network"],"bestFor":["Developers experimenting with x402 payment protocol on Base","Applications needing per-call paid data access without API key management","Testing micropayment-gated endpoint integrations"],"notFor":["Production use involving real PII/SSN data without verifying data source legitimacy and compliance","Users needing comprehensive documentation or OpenAPI specs before integration","Bulk data retrieval (pay-per-request model with no batch discount)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:14.745Z"},"updatedAt":"2026-04-24T12:04:38.976Z"}}