x402basequality 0.30

Pay-per-call loan data endpoint on Base via x402, settled in USDC at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/loans/50

What it does

This endpoint at lowpaymentfee.com provides access to loan data (specifically loan ID 50) via the x402 payment protocol. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with an exact-scheme challenge requiring up to 20,000 base units (i.e., $0.02 given USDC's 6 decimals).

The broader lowpaymentfee.com platform advertises a wide catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all at a uniform $0.02 per request. The platform emphasizes no API keys, no rate limits, and instant access. However, the specific endpoint `/api/v1/loans/50` is not listed on the homepage catalog, so its exact response schema and data content are unclear. The description in the x402 challenge is simply "Premium API Access," which is generic.

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 spec, no example request/response, and no detailed description of what the loans endpoint returns. Prospective callers should be aware that the actual data payload is unverified — the endpoint is live (returns a proper 402 challenge) but what it delivers after payment is unknown from available materials.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-callloan-datajson-responsepost-method

Use cases

  • —Retrieving loan data for loan ID 50 via a single paid API call
  • —Integrating pay-per-call financial data into agent workflows without API keys
  • —Demonstrating x402 payment protocol integration on Base

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents needing keyless, pay-per-call data access on Base
  • —Projects requiring USDC-settled micropayment API calls

Not for

  • —Users needing well-documented, schema-validated financial APIs
  • —Bulk data retrieval where per-call pricing is inefficient
  • —Production use cases requiring SLA guarantees or support

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/loans/50 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/loans/50
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, but there is no documentation, no OpenAPI schema, no example responses, and the specific /loans/50 endpoint isn't even listed in the site's own catalog. The actual data returned after payment is completely unknown.

Warnings

  • —No documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet' with no content
  • —The /api/v1/loans/50 endpoint is not listed in the site's own homepage catalog of available APIs
  • —No OpenAPI spec or response schema provided — the actual data payload after payment is unknown
  • —Generic description 'Premium API Access' gives no indication of what data is returned

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 05:20:56Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-28

Agent access

JSONhttps://clawmart.sh/api/listings/jtvdrv
Pay-per-call loan data endpoint on Base via x402, settled in USDC at $0.02/request. — Clawmart · Clawmart