Pay-per-call loan data endpoint on Base via x402, settled in USDC at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides access to loan data (resource ID 65) via the x402 payment protocol. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum cost of 0.02 USDC per request (20,000 base units at 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
The provider, lowpaymentfee.com, hosts a broader catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services, all priced at $0.02 per request. This specific endpoint (/api/v1/loans/65) is labeled "Premium API Access" but appears to serve loan-related data. The exact response schema is not documented; the only confirmed output metadata is mimeType application/json.
Documentation is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response examples, and no description of what fields the loan object contains. Prospective callers should be prepared to experiment or contact the provider for schema details.
Capabilities
Use cases
- —Retrieving loan record data on-demand without subscription or API key
- —Integrating loan information into agent workflows that support x402 payments
- —Programmatic access to financial loan data with per-call USDC micropayments
Fit
Best for
- —Agents or bots that can settle x402 payments on Base
- —Developers wanting zero-commitment, pay-as-you-go loan data access
- —Crypto-native applications that already hold USDC on Base
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —Applications requiring bulk/batch loan data retrieval at volume discounts
- —Non-crypto workflows that cannot produce x402 payment headers
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/loans/65 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and the purpose of the /loans/65 resource is unexplained. Effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — response format is unknown
- —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no content
- —The specific data returned by /api/v1/loans/65 is undocumented; 'Premium API Access' is a generic label
- —Cannot confirm what fields or structure the loan response contains
Citations
- —Endpoint returns 402 with x402 challenge advertising USDC on Base network, maxAmountRequired 20000https://lowpaymentfee.com/api/v1/loans/65
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/loans/65
- —Provider advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Documentation, pricing, API, and README pages show only 'Connect wallet' with no further contenthttps://lowpaymentfee.com/docs