x402basequality 0.25

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/mortgages/90

What it does

This endpoint at lowpaymentfee.com provides mortgage-related data via a POST request to `/api/v1/mortgages/90`. It is part of a broader platform (lowpaymentfee.com) that offers dozens of pay-per-request 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 endpoint `/api/v1/mortgages/90` is listed under the provider's generic "Premium API Access" label. The x402 challenge confirms it is live, accepting payments in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base) with a maximum amount of 20,000 base units. Since USDC uses 6 decimals, this translates to $0.02 per request — consistent with the platform's advertised flat pricing of $0.02/request across all endpoints. The payment scheme is "exact" with a 300-second timeout.

Documentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the `/mortgages/90` endpoint actually returns or what input it expects. The `90` in the path may refer to a specific mortgage product type (e.g., 90% LTV) or a resource ID, but this is purely speculative. Without documentation, callers will need to experiment with POST payloads to discover the expected input format and response structure.

Capabilities

x402-paymentusdc-on-basepay-per-requestmortgage-datapost-endpoint

Use cases

  • —Retrieving mortgage-related data or calculations programmatically
  • —Integrating mortgage information into financial dashboards or agent workflows
  • —Pay-per-call access to mortgage data without API key registration

Fit

Best for

  • —Agents or apps needing on-demand mortgage data with crypto micropayments
  • —Developers who want keyless, pay-as-you-go API access on Base
  • —Prototyping financial tools that consume mortgage endpoints

Not for

  • —Users who need well-documented APIs with clear request/response schemas
  • —Production systems requiring guaranteed SLAs and support
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/mortgages/90 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/mortgages/90
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what the mortgage endpoint accepts or returns. No OpenAPI spec, no examples, no description of the resource. The docs pages are all blank 'Connect wallet' stubs. This is effectively a stub listing.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all return only 'Connect wallet' with no content
  • —No OpenAPI or schema describing request/response format for /api/v1/mortgages/90
  • —The meaning of '90' in the path is unknown — could be a resource ID, LTV percentage, or loan term
  • —The endpoint is not listed on the provider's own homepage among their advertised APIs, raising questions about its status

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 05:50:02Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

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