x402basequality 0.30

Pay-per-request premium API endpoint on Base network via x402 (USDC).

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

What it does

lowpaymentfee.com hosts a collection of pay-per-request API endpoints accessible via the x402 payment protocol on the Base network. The specific endpoint at `/api/endpoint-2` is listed as "Premium API Access" and accepts POST requests. Payment is made in USDC (asset 0x8335…2913) with a maximum amount of 20,000 units (likely 0.02 USDC given 6 decimals), consistent with the site-wide $0.02/request pricing.

The provider's landing page advertises endpoints across four categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure (geocoding, validation, conversion, generation). However, `/api/endpoint-2` does not correspond to any of these named endpoints and its specific functionality is undocumented. The docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no further content.

The endpoint is live and returns a valid x402 402 challenge. No OpenAPI schema, request/response examples, or detailed documentation were found. Without knowing what this endpoint actually does, callers should treat it as an opaque premium API whose behavior must be discovered after payment.

Capabilities

x402-paymentusdc-base-networkpay-per-requestpost-endpointjson-response

Use cases

  • —Accessing a premium API service with per-request USDC micropayments on Base
  • —Integrating x402-compatible agent workflows that pay for API calls automatically
  • —Testing x402 payment protocol integrations against a live endpoint

Fit

Best for

  • —Developers experimenting with x402 pay-per-request protocols
  • —Agents that need keyless, pay-as-you-go API access on Base
  • —Projects exploring micropayment-gated API services

Not for

  • —Users who need well-documented API contracts before integrating
  • —High-volume use cases requiring predictable flat-rate pricing
  • —Anyone needing detailed request/response schemas upfront

Quick start

curl -X POST https://lowpaymentfee.com/api/endpoint-2
# Returns 402 with x402 payment challenge.
# Include X-PAYMENT header with a valid x402 payment token (USDC on Base) to access.

Endpoint

URLhttps://lowpaymentfee.com/api/endpoint-2
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and the specific functionality of /api/endpoint-2 is completely unknown. The docs pages are empty beyond a wallet connect prompt. This is effectively a stub listing.

Warnings

  • —The specific functionality of /api/endpoint-2 is undocumented — it does not match any of the named endpoints on the provider's landing page.
  • —No OpenAPI schema, request body format, or response format is available.
  • —All documentation pages (docs, API, pricing, README) returned only 'Connect wallet' with no usable content.
  • —The endpoint's purpose must be inferred or discovered after payment; callers assume risk.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 19:36:22Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/P5Vj3W
Pay-per-request premium API endpoint on Base network via x402 (USDC). — Clawmart · Clawmart