x402-gated loan data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides access to a loan resource (ID 77) via the x402 payment protocol. It is part of a broader platform offering pay-per-request APIs across data analytics, AI/ML, finance/Web3, and infrastructure categories, all priced at $0.02 per call and settled in USDC on the Base network.
The specific endpoint `/api/v1/loans/77` is labeled "Premium API Access" in the x402 challenge. The challenge confirms the endpoint is live, accepting POST requests, and requires an exact payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. No API keys or rate limits are advertised; access is gated purely by the x402 payment header.
Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no description of the loan data returned, and no example responses. The platform's landing page lists many endpoints across multiple categories, but none of them include detailed documentation about request/response formats. The actual content and structure of the loan data returned by this endpoint is unknown.
Capabilities
Use cases
- —Retrieving loan data for a specific loan record (ID 77)
- —Programmatic access to financial loan information without API key management
- —Agent-driven data retrieval with per-request USDC micropayments
Fit
Best for
- —Agents or applications that need on-demand loan data with no subscription commitment
- —Developers experimenting with x402 payment-gated APIs
- —Use cases requiring keyless, pay-as-you-go API access on Base
Not for
- —Users needing detailed documentation or guaranteed response schemas before integrating
- —High-volume batch retrieval where per-request pricing may add up
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/loans/77 \
-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 what the loan data actually contains, no OpenAPI schema, no example responses, and all doc pages are empty stubs. The endpoint path suggests a single static resource (loan 77) with no explanation of what it returns.
Warnings
- —No documentation available — all doc/pricing/API/README pages show only 'Connect wallet' with no content
- —No OpenAPI or response schema provided; the structure of the returned loan data is completely unknown
- —The endpoint targets a single loan ID (77); it is unclear whether other loan IDs are available or what the data represents
- —The platform lists many endpoint categories but none have detailed docs; treat all claims as unverified
Citations
- —The x402 challenge requires 20,000 base units of USDC on Base (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02https://lowpaymentfee.com/api/v1/loans/77
- —Platform advertises $0.02 per request, no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —Docs, API, pricing, and README pages render only a 'Connect wallet' prompt with no substantive documentationhttps://lowpaymentfee.com/docs