Loan amortization schedule API, pay-per-call at $0.02 via USDC on Base.
What it does
This endpoint at lowpaymentfee.com provides a loan amortization schedule via a POST request to `/api/v1/loans/8/schedule`. It is part of a broader platform offering data, analytics, AI, finance, and utility APIs, all gated behind the x402 payment protocol. Each call costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required.
The x402 challenge confirms the endpoint is live and accepts exact-scheme payments in USDC (contract `0x8335…2913` on Base) with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The response MIME type is `application/json`. The specific endpoint path suggests it returns a payment schedule for a loan identified by ID 8, though no detailed input/output schema or documentation beyond the landing page is available.
The provider's site lists many other endpoints across categories like AI/ML (sentiment, summarization, classification, embeddings), finance (price feeds, exchange rates, token quotes, gas estimates), and infrastructure (geocoding, validation, conversion, generation), all at the same $0.02 per-request price point. Documentation pages (`/docs`, `/pricing`, `/api`, `/README`) returned only a "Connect wallet" prompt with no substantive content, so the exact request body format and response schema for this loan schedule endpoint remain unknown.
Capabilities
Use cases
- —Generating an amortization schedule for a specific loan
- —Integrating loan payment breakdowns into financial dashboards
- —Agent-driven financial planning that needs per-call loan schedule data
Fit
Best for
- —Developers needing on-demand loan schedule calculations without subscriptions
- —AI agents that can settle micropayments in USDC on Base
- —Applications requiring pay-per-use financial computation endpoints
Not for
- —Users who need bulk/batch loan calculations at volume discounts
- —Anyone without a Base-compatible USDC wallet
- —Use cases requiring detailed API documentation or OpenAPI specs before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/loans/8/schedule \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no example request/response, and the docs pages are empty. The specific purpose of the '/loans/8/schedule' path is inferred from the URL pattern only.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README all return only a 'Connect wallet' prompt with no content.
- —No input or output schema provided; request body format is unknown.
- —The loan ID '8' is hardcoded in the path — unclear if this is a demo or a fixed resource.
- —The endpoint description is generic ('Premium API Access') and does not describe the actual functionality.
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/loans/8/schedule
- —All APIs on the platform cost $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/loans/8/schedule