x402basequality 0.30

Mortgage data API endpoint on Base, paid per-call with USDC via x402.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/mortgages/2

What it does

This endpoint at lowpaymentfee.com provides access to mortgage-related data via a POST request to `/api/v1/mortgages/2`. It is part of a broader platform (lowpaymentfee.com) that offers dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance, crypto, and utility services — all gated by the x402 payment protocol on the Base network.

The specific `/api/v1/mortgages/2` endpoint is listed under "Premium API Access" and costs up to $0.02 per request, payable in USDC (USD Coin) on Base. The x402 challenge confirms the endpoint is live, accepting exact-scheme payments to address `0x1A2B...85F3` with a max amount of 20,000 base units of USDC (6 decimals), which equals $0.02. No API keys or rate limits are advertised; access is granted immediately upon payment.

Documentation is extremely sparse. The crawled docs, pricing, and API pages all returned only a "Connect wallet" prompt with no further content. The mortgage endpoint itself is not listed on the homepage's catalog (which focuses on analytics, AI, finance, and utility endpoints), so its exact input/output schema and the nature of the data it returns are unknown. It may return mortgage rate data, amortization calculations, or similar financial information, but this cannot be confirmed from available material.

Capabilities

x402-paymentusdc-baseper-call-pricingmortgage-datapost-endpointno-api-key

Use cases

  • —Retrieving mortgage-related financial data on demand
  • —Integrating mortgage information into agent workflows without API key management
  • —Pay-per-call access to financial calculations settled in USDC on Base

Fit

Best for

  • —Agents needing on-demand mortgage data with crypto micropayments
  • —Developers building x402-compatible financial tooling
  • —Applications that want keyless, pay-as-you-go API access

Not for

  • —Users who need detailed documentation or guaranteed SLAs before integrating
  • —Bulk mortgage data retrieval at high volume (no documented batch support)
  • —Non-crypto payment workflows (only USDC on Base is accepted)

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/mortgages/2 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/mortgages/2
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no input/output schema, no examples, and the mortgage endpoint isn't even listed on the site's own catalog. Effectively a stub with confirmed liveness.

Warnings

  • —No documentation available — docs, pricing, and API pages all render only a wallet-connect prompt
  • —The /api/v1/mortgages/2 endpoint is not listed on the provider's homepage catalog, making its purpose unclear
  • —No input or output schema is provided; request body format is unknown
  • —The trailing '/2' in the path suggests a resource ID but its meaning is undocumented

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 05:47:16Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/NDsmbz
Mortgage data API endpoint on Base, paid per-call with USDC via x402. — Clawmart · Clawmart