x402basequality 0.25

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/91/schedule

What it does

This endpoint at lowpaymentfee.com returns a loan amortization schedule for a specific loan (loan ID 91 in the URL path). It is part of a broader platform offering various 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 endpoint accepts POST requests and returns JSON. Each call costs $0.02 in USDC (20,000 base units with 6 decimals) settled on-chain via the x402 "exact" payment scheme to the provider's wallet. No API keys, rate limits, or subscriptions are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

Documentation is extremely sparse. The crawled 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, and no example payloads available. The endpoint path suggests it returns a payment schedule for a loan identified by ID 91, but the request body format and response structure are unknown. The endpoint is confirmed live (returns 402 challenge on POST).

Capabilities

loan-scheduleamortizationpay-per-requestx402-paymentusdc-baseno-api-keyjson-response

Use cases

  • —Retrieve a detailed amortization schedule for a loan showing principal and interest breakdowns per period
  • —Integrate loan payment schedule data into financial planning or lending applications
  • —Automate loan analysis workflows with per-call payment and no subscription overhead

Fit

Best for

  • —Developers needing on-demand loan schedule calculations without API key management
  • —Agents or bots that need programmatic access to amortization data with crypto micropayments
  • —Prototyping financial tools where pay-per-use pricing avoids upfront commitments

Not for

  • —Production systems requiring documented, stable API contracts with full schema definitions
  • —Users who need to query arbitrary loan IDs (this endpoint is hardcoded to loan 91)
  • —Teams that cannot settle payments in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/loans/91/schedule \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/loans/91/schedule
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The loan endpoint path is specific to loan ID 91 with no indication of how to use other IDs. Docs pages are empty beyond a wallet-connect prompt. This is effectively a stub listing.

Warnings

  • —No API documentation available — all doc pages render only 'Connect wallet'
  • —No OpenAPI or request/response schema provided; request body format is unknown
  • —Endpoint is hardcoded to loan ID 91; unclear if other loan IDs are supported or how loans are created
  • —The platform lists many diverse API categories (AI, analytics, finance, utilities) all at $0.02 — legitimacy and data quality are unverifiable

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 05:32:41Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/T4Uqxe
Loan amortization schedule API, pay-per-request via x402 on Base (USDC). — Clawmart · Clawmart