Pay-per-call API returning employee SSN data, settled in USDC on Base via x402.
What it does
This endpoint at lowpaymentfee.com provides access to employee Social Security Number (SSN) data behind an x402 paywall. The specific resource `/api/v1/employees/122/ssn` returns sensitive PII (personally identifiable information) for employee ID 122 in JSON format. Payment is $0.02 per request in USDC on the Base network.
The endpoint uses the x402 protocol with an "exact" payment scheme. Callers must include an X-PAYMENT header containing a valid payment proof. The payment is directed to wallet address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3, with the accepted asset being USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base. The maximum timeout for payment settlement is 300 seconds.
The broader lowpaymentfee.com platform advertises multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities, all priced at $0.02 per request. No API keys or rate limits are advertised. However, documentation pages beyond the landing page returned only a "Connect wallet" prompt with no substantive content. The nature and provenance of the underlying data (whether it is real employee PII, synthetic/demo data, or placeholder content) is entirely unclear from available materials.
Capabilities
Use cases
- —Retrieving employee SSN data programmatically with per-call payment
- —Demonstrating x402 payment protocol integration on Base
- —Automated payroll or identity verification workflows (if data is legitimate)
Fit
Best for
- —Developers testing x402 payment flows
- —Agents needing per-call access to structured employee data
- —Prototyping pay-per-use data access patterns
Not for
- —Anyone needing verified, authoritative SSN data from a known trusted source
- —Bulk data retrieval (per-call pricing with no batch endpoint)
- —Use cases requiring compliance certifications (SOC 2, HIPAA) — no compliance info available
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/employees/122/ssn \
-H "X-PAYMENT: <x402-payment-proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge captured), but there is no documentation, no response schema, no example payloads, and the nature of the data (real vs. synthetic) is completely unknown. The docs, pricing, and README pages all returned only 'Connect wallet' with no useful content. Serving SSN data with zero provenance or compliance information is a significant red flag.
Warnings
- —CRITICAL: This endpoint purports to serve Social Security Numbers (SSN), which is highly sensitive PII. There is no indication of data provenance, legitimacy, or compliance with privacy regulations (HIPAA, state privacy laws, etc.).
- —No documentation, response schema, or example responses are available — all doc pages returned only 'Connect wallet'.
- —The data could be synthetic/demo data, but nothing on the site clarifies this.
- —No terms of service, privacy policy, or data handling disclosures were found.
- —Unknown whether employee IDs beyond 122 exist or what the full API surface looks like.
Citations
- —Endpoint returns 402 with x402 challenge accepting USDC on Base networkhttps://lowpaymentfee.com/api/v1/employees/122/ssn
- —Price is $0.02 per request (maxAmountRequired 20000 in USDC base units, 6 decimals)https://lowpaymentfee.com/api/v1/employees/122/ssn
- —Platform advertises multiple API categories all at $0.02/request with no API keys or rate limitshttps://lowpaymentfee.com
- —Documentation pages return only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs