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 (employee ID 27) 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, 6 decimals), which equals $0.02 per request. The provider's landing page confirms a flat $0.02/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 valid 402 challenge.
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 essentially empty (all other pages just show "Connect wallet"), so there is no schema documentation for request body parameters or response format. The specific nature of the data returned (whether it is synthetic/demo data or real PII) is not documented.
Capabilities
Use cases
- —Retrieving employee SSN data programmatically via micropayment
- —Demonstrating x402 payment protocol integration on Base network
- —Testing pay-per-call API patterns with USDC micropayments
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents needing per-call access to structured employee data without API keys
- —Testing micropayment-gated API workflows on Base
Not for
- —Production PII handling without verifying data provenance and compliance
- —Bulk data retrieval (no documented batch endpoints)
- —Users who need detailed API documentation or response schema guarantees
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/employees/27/ssn \
-H "X-PAYMENT: <x402-payment-header>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, there is no documentation for request/response schemas, no OpenAPI spec, no examples, and the docs/pricing/README pages are all empty. The endpoint deals with SSN data which raises significant compliance concerns with no documented data provenance.
Warnings
- —Endpoint serves SSN (Social Security Number) data — a highly sensitive PII category. No documentation on whether this is synthetic/demo data or real PII. Regulatory compliance (e.g., FCRA, state privacy laws) is unclear.
- —No request body schema or response schema documented anywhere.
- —All documentation pages (docs, api, pricing, README) return only 'Connect wallet' with no actual content.
- —Data provenance and legitimacy of employee records is completely undocumented.
Citations
- —The x402 challenge advertises maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/employees/27/ssn
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/employees/27/ssn
- —Flat $0.02/request pricing with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com