x402basequality 0.30

Loan amortization schedule API, pay-per-call at $0.02 via USDC on Base.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/loans/100/schedule

What it does

This endpoint at lowpaymentfee.com computes a loan amortization schedule for a given loan (identified by ID in the URL path). It is part of a broader platform offering dozens of pay-per-request APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services — all gated via the x402 payment protocol on the Base network using USDC.

The specific endpoint `/api/v1/loans/100/schedule` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335… on Base), which equals $0.02 per request (USDC uses 6 decimals). No API keys or rate limits are required; access is granted immediately upon payment. The payment is settled on-chain to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout window.

Documentation is extremely sparse. The landing page lists available API categories and uniform $0.02 pricing, but the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples. The loan schedule endpoint's input parameters and output format must be inferred from the URL pattern (loan ID 100) and the generic description "Premium API Access."

Capabilities

loan-amortization-schedulepay-per-requestx402-paymentusdc-base-networkjson-apino-api-key

Use cases

  • —Computing amortization schedules for loans programmatically
  • —Integrating loan payment breakdowns into financial dashboards
  • —Agent-driven financial planning that needs per-call loan calculations

Fit

Best for

  • —Developers needing on-demand loan amortization without API key management
  • —AI agents that can pay per-call via x402/USDC on Base
  • —Applications requiring simple, low-cost loan schedule lookups

Not for

  • —Users who need detailed API documentation or OpenAPI specs before integrating
  • —High-volume batch loan calculations where per-call pricing adds up
  • —Users without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/loans/100/schedule \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/loans/100/schedule
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The endpoint's actual input parameters and output format are unknown.

Warnings

  • —No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'
  • —No OpenAPI or JSON schema for request or response bodies
  • —Input parameters for the loan schedule endpoint are completely undocumented
  • —The URL embeds a loan ID (100) but it is unclear how to parameterize loan terms, principal, rate, etc.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 05:17:23Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/UyLYPE
Loan amortization schedule API, pay-per-call at $0.02 via USDC on Base. — Clawmart · Clawmart