Retrieve employee SSN data via x402 micropayment on Base network for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns employee Social Security Number (SSN) data for a specific employee record (ID 151) 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.
The x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (20000 / 10^6). The provider's landing page confirms a flat $0.02-per-request pricing model across all their API endpoints, with no API keys, no rate limits, and instant access. The endpoint was live at probe time, returning a well-formed 402 challenge with x402Version 1.
This endpoint is part of a broader platform (lowpaymentfee.com) that offers data & analytics, AI/ML inference, finance/Web3, and infrastructure utility APIs — all at the same $0.02 per-call price point. Documentation beyond the landing page is extremely thin; the /docs, /pricing, and /README pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no information about what fields the SSN response contains or what input the POST body expects.
Capabilities
Use cases
- —Retrieving employee SSN for payroll or HR verification workflows
- —Programmatic access to sensitive employee identifiers behind a paywall
- —Agent-driven identity verification requiring SSN data
Fit
Best for
- —Developers needing on-demand SSN retrieval without API key management
- —Automated payroll or compliance systems that can settle USDC on Base
- —x402-compatible agents that need per-call access to employee PII
Not for
- —Bulk SSN lookups across many employees (only employee 151 is documented at this path)
- —Users who cannot transact in USDC on the Base network
- —Applications requiring detailed documentation or OpenAPI specs before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/employees/151/ssn \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing, but there is zero documentation on request body format, response schema, or what data is actually returned. The /docs and other pages are empty. The endpoint deals with highly sensitive PII (SSN) with no visible compliance or access-control documentation.
Warnings
- —Endpoint serves Social Security Numbers — highly regulated PII under US law (e.g., FCRA, state SSN protection statutes). Ensure legal compliance before use.
- —No documentation exists for request body schema or response format; integration requires trial-and-error.
- —Only employee ID 151 is referenced in this specific path; unclear if other IDs are supported or how employee IDs are discovered.
- —The /docs, /pricing, and /README pages returned no useful content — only a wallet-connect prompt.
- —No OpenAPI spec or ai-plugin manifest is available.
Citations
- —The x402 challenge returns maxAmountRequired of 20000 in USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base networkhttps://lowpaymentfee.com/api/v1/employees/151/ssn
- —The provider advertises $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The platform offers Data & Analytics, AI & ML, Finance & Web3, and Infrastructure API categorieshttps://lowpaymentfee.com