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 specific loan resource (loan ID 27) via the x402 payment protocol. It is part of a broader platform that offers a variety of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all gated behind x402 micropayments on the Base network using USDC.
The specific endpoint `/api/v1/loans/27` is labeled "Premium API Access" and accepts POST requests. Payment is settled on-chain on Base using USDC (contract 0x8335…2913) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The x402 challenge confirms the endpoint is live and returns application/json content. No API keys or rate limits are advertised; access is granted purely through per-request payment.
Documentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the loan data actually contains. The endpoint path suggests it returns information about a specific loan (ID 27), but the exact fields and semantics are unknown. The platform's landing page lists many other endpoints at $0.02 each, but this particular loans endpoint is not listed among them, making it somewhat opaque.
Capabilities
Use cases
- —Retrieving loan details for a specific loan record
- —Integrating loan data into financial dashboards or analytics pipelines
- —Agent-driven on-demand access to loan information without API key management
Fit
Best for
- —Developers wanting keyless, pay-per-call access to loan data
- —AI agents that can settle x402 payments on Base
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Bulk loan data retrieval (no batch endpoint documented)
- —Users who need detailed API documentation or schemas before integrating
- —Non-crypto users who cannot settle USDC payments on Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/loans/27 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no documentation, no OpenAPI schema, no request/response examples, and no explanation of what loan data is returned. The endpoint is not even listed on the provider's own landing page. This is effectively a stub listing.
Warnings
- —No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'
- —No OpenAPI or request/response schema provided
- —The /api/v1/loans/27 endpoint is not listed among the provider's advertised APIs on the landing page
- —Unknown what data fields the loan endpoint returns
- —No information on what input the POST body expects
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/loans/27
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/loans/27