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 a specific loan record (ID 92) 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 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals).
The provider lowpaymentfee.com hosts a broad 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 are advertised at $0.02 per request with no API keys, no rate limits, and no minimum commitments — payment is handled entirely through the x402 protocol on the Base L2 network.
Documentation 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 /api/v1/loans/92 endpoint actually returns beyond the generic label "Premium API Access." The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation makes it difficult to know what data fields or loan information to expect in the response.
Capabilities
Use cases
- —Retrieving loan record data on-demand without API key registration
- —Programmatic access to loan information with per-call USDC micropayments
- —Agent-driven financial data retrieval using x402 payment protocol
Fit
Best for
- —Developers wanting zero-signup, pay-per-call access to loan data
- —AI agents that can settle x402 payments on Base in USDC
- —Users who prefer no rate limits and no subscription commitments
Not for
- —Users needing detailed API documentation or response schema before integrating
- —Bulk loan data retrieval where per-call pricing would be cost-inefficient
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/loans/92 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, there is no OpenAPI schema, no request/response examples, and no documentation beyond a wallet-connect prompt. The specific purpose of /api/v1/loans/92 is entirely unclear — it could be sample/demo data. This is effectively a stub listing.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
- —No OpenAPI or output schema describing the response format for /api/v1/loans/92
- —The endpoint path references a specific loan ID (92); unclear if this is a real resource or demo placeholder
- —No request body schema documented — unknown what POST body (if any) is expected
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/loans/92
- —All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/loans/92
- —The provider offers APIs across data & analytics, AI/ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com