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 62) 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 charge of 20,000 base units (0.02 USDC, i.e. $0.02 per request). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
lowpaymentfee.com hosts a broader catalog of pay-per-call APIs spanning data & analytics, AI/ML inference (sentiment, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints on the platform are priced at $0.02 per request and settle on the Base L2 network.
The specific endpoint `/api/v1/loans/62` is labeled "Premium API Access" in the x402 challenge but falls under what appears to be a loans or financial data category. Documentation beyond the landing page is essentially empty (all doc/pricing/README pages only show a wallet-connect prompt), so the exact request body schema and response format are unknown. Callers should expect a JSON response but will need to experiment or contact the provider for field-level details.
Capabilities
Use cases
- —Retrieving loan data or financial records on a per-call basis without subscription
- —Integrating pay-per-use financial data into autonomous agent workflows
- —Accessing structured loan information settled via crypto micropayments
Fit
Best for
- —Agents or apps needing on-demand loan/financial data without API key management
- —Developers experimenting with x402 payment protocol integrations
- —Low-volume consumers who prefer pay-per-call over monthly subscriptions
Not for
- —High-volume batch processing where per-call pricing becomes expensive
- —Users who need detailed API documentation and guaranteed SLAs before integrating
- —Anyone without a Base-network USDC wallet or x402-compatible client
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/loans/62 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, there is no OpenAPI schema, no documentation of request/response fields, and all doc pages are empty wallet-connect stubs. The purpose of '/api/v1/loans/62' is unclear beyond the generic 'Premium API Access' label.
Warnings
- —No API documentation available — all doc/pricing/README pages render only a wallet-connect prompt
- —Request body schema and response format are completely unknown; no OpenAPI spec provided
- —The specific purpose of /api/v1/loans/62 is unclear; 'Premium API Access' is a generic label
- —Cannot verify what data is actually returned without making a paid request
Citations
- —Endpoint returns HTTP 402 with x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/loans/62
- —maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02https://lowpaymentfee.com/api/v1/loans/62
- —All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limitshttps://lowpaymentfee.com
- —Platform offers APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categorieshttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/loans/62