x402basequality 0.30

Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/payments/144

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a catalog of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, settled in USDC on the Base network, with no API keys, no rate limits, and no commitments required.

The specific endpoint `/api/v1/payments/144` is listed as "Premium API Access" but its exact functionality is not documented beyond that label. The x402 challenge confirms the endpoint is live, accepts POST requests, and requires a payment of up to 20,000 base units of USDC (0.02 USD) on Base (asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The payment scheme is "exact" with a 300-second timeout. No OpenAPI schema, detailed request/response documentation, or usage examples were found in the crawled pages — the docs, pricing, API, and README pages all rendered only a "Connect wallet" prompt with no additional content.

Without further documentation it is unclear what data or service this particular endpoint returns. The platform's landing page suggests the broader catalog includes metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and generation endpoints, all at the same $0.02 price point. Prospective users should be aware that the lack of documented input/output schemas makes integration speculative for this specific endpoint.

Capabilities

x402-paymentusdc-basepay-per-requestpost-methodno-api-keyno-rate-limit

Use cases

  • —Accessing a premium API endpoint with per-request USDC micropayments on Base
  • —Agent-driven API consumption without pre-registration or API keys
  • —Exploring a multi-category API marketplace with uniform $0.02 pricing

Fit

Best for

  • —Developers or agents wanting keyless, pay-as-you-go API access
  • —Users who prefer crypto-native micropayment settlement on Base
  • —Quick experimentation with low-cost per-call pricing

Not for

  • —Users needing well-documented request/response schemas before integration
  • —High-volume consumers who need bulk pricing or subscription discounts
  • —Anyone unable to pay in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/144 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/144
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation of what this specific endpoint does, no request/response schema, and no examples. The docs/pricing/README pages are empty beyond a wallet-connect prompt. This is effectively a stub listing.

Warnings

  • —No documentation found for the specific /api/v1/payments/144 endpoint — its purpose beyond 'Premium API Access' is unknown.
  • —All docs, pricing, API, and README pages returned only a 'Connect wallet' prompt with no substantive content.
  • —No OpenAPI spec, input schema, or output schema available.
  • —The endpoint name 'Premium API Access' is generic and does not describe a concrete service.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 06:36:15Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/9F3R8f
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart