x402basequality 0.30

Loan amortization schedule API, pay-per-request via x402 on Base (USDC).

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/loans/21/schedule

What it does

This endpoint at lowpaymentfee.com returns a loan amortization schedule for a specific loan (loan ID 21 in the URL path). It is part of a broader platform offering dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services — all gated behind the x402 payment protocol on the Base network using USDC.

The specific endpoint `/api/v1/loans/21/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). The platform's landing page confirms uniform $0.02/request pricing across all endpoints, with no API keys, no rate limits, and no minimum commitments required.

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 spec, no request/response schema documentation, and no examples of what parameters the POST body should contain or what the schedule response looks like. The endpoint is live (returns a proper 402 challenge), but without documentation it is difficult to know what input fields are expected or what the output structure is. The loan schedule concept suggests it likely returns a table of periodic payments with principal, interest, and balance breakdowns, but this is inference only.

Capabilities

loan-amortization-schedulex402-paymentusdc-base-networkpay-per-requestjson-api

Use cases

  • —Generating an amortization schedule for a loan to see payment breakdowns over time
  • —Integrating loan schedule data into a financial planning application
  • —Agent-driven loan analysis where per-call payment avoids subscription overhead

Fit

Best for

  • —Developers needing on-demand loan schedule calculations without API key management
  • —AI agents that can pay per-request via x402 for financial computations
  • —Applications requiring simple pay-as-you-go access to loan math

Not for

  • —Users who need detailed API documentation before integrating
  • —High-volume batch processing where $0.02/request adds up significantly
  • —Anyone without a Base-network USDC wallet for x402 payments

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/loans/21/schedule \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/loans/21/schedule
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing, but there is zero documentation on request parameters or response schema. The /docs, /pricing, and /README pages are empty beyond a wallet connect prompt. The loan schedule endpoint path is hardcoded to loan ID 21 with no explanation of what that represents. Effectively a stub listing.

Warnings

  • —No API documentation available — /docs, /api, /pricing, /README all show only 'Connect wallet'
  • —No OpenAPI spec or request/response schema provided
  • —Endpoint path is hardcoded to loan ID 21; unclear if other loan IDs are supported or what they represent
  • —Request body format is entirely unknown — no examples or field descriptions anywhere

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 05:17:22Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/3phBBY
Loan amortization schedule API, pay-per-request via x402 on Base (USDC). — Clawmart · Clawmart