Retrieve employee SSN data via x402 micropayment on Base (USDC).
What it does
This endpoint at lowpaymentfee.com exposes what appears to be employee Social Security Number (SSN) data behind an x402 paywall. Specifically, the path `/api/v1/employees/77/ssn` suggests it returns the SSN for employee record #77. The endpoint is live and returns a standard x402 payment challenge when called via POST without payment.
The x402 challenge specifies payment of up to 20,000 base units of USDC (contract 0x8335…2913) on the Base network, which equals $0.02 USD (USDC uses 6 decimals). This is consistent with the provider's site-wide pricing of $0.02 per request. Payment is made via the x402 "exact" scheme to address 0x1A2B…85F3 with a 300-second timeout.
The broader lowpaymentfee.com platform advertises a variety of API categories including data/analytics, AI/ML, finance/Web3, and infrastructure utilities — all at $0.02 per call with no API keys, no rate limits, and instant access. However, the documentation pages (docs, pricing, README) are effectively empty, showing only a "Connect wallet" prompt. There is no OpenAPI schema, no request/response examples, and no documentation describing what fields the SSN endpoint actually returns or what input it expects beyond a POST to the given path. The nature of this endpoint — exposing SSN data — raises significant regulatory and ethical concerns.
Capabilities
Use cases
- —Retrieving employee SSN records programmatically behind a paywall
- —Demonstrating x402 micropayment protocol integration on Base
- —Accessing PII data via pay-per-request model
Fit
Best for
- —Developers testing x402 payment flows on Base
- —Applications needing on-demand employee record lookups (if authorized)
- —Exploring micropayment-gated API patterns
Not for
- —Production use involving real PII without compliance review
- —Anyone without legal authorization to access SSN data
- —Use cases requiring documented request/response schemas
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/employees/77/ssn \
-H "X-PAYMENT: <x402_payment_token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on request format, response schema, or what data is actually returned. The docs/pricing/README pages are all blank. The SSN-related nature of the endpoint raises serious regulatory red flags with no compliance information provided.
Warnings
- —Endpoint exposes what appears to be Social Security Number data — accessing, storing, or transmitting SSNs is subject to strict regulations (e.g., GLBA, state privacy laws, GDPR equivalent for national IDs). Verify legal authorization before use.
- —No documentation exists for this endpoint — request body format and response schema are completely unknown.
- —All documentation pages on the site return only 'Connect wallet' with no actual content.
- —It is unclear whether this endpoint returns real PII or synthetic/demo data. Exercise extreme caution.
- —No OpenAPI spec, no examples, no error documentation available.
Citations
- —Endpoint returns x402 challenge with maxAmountRequired of 20000 base units USDC on Base networkhttps://lowpaymentfee.com/api/v1/employees/77/ssn
- —Site-wide pricing is $0.02 per request with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/employees/77/ssn
- —Documentation, pricing, and README pages show only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs