x402basequality 0.30

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/transfers/126

What it does

lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/transfers/126` is listed as "Premium API Access" and accepts POST requests. The x402 challenge indicates a maximum cost of 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base), which equals $0.02 per request (USDC uses 6 decimals). No API keys or rate limits are required — callers simply attach an x402 payment header to each request.

The broader platform advertises multiple API categories including 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 utilities (geocoding, validation, conversion, generation). All endpoints are uniformly priced at $0.02 per request. However, the specific functionality of the `/api/v1/transfers/126` endpoint is unclear — it sits under a "transfers" path that does not appear in the site's public API listing, and no documentation, request schema, or response schema is available for it.

The endpoint is live and returns a valid x402 challenge with a 300-second payment timeout. The platform's landing page loads successfully (HTTP 200), but the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive documentation.

Capabilities

x402-paymentusdc-basepay-per-requestno-api-keypost-endpoint

Use cases

  • —Making paid API calls without requiring API key registration
  • —Programmatic agent-to-service payments using USDC on Base
  • —Accessing premium API functionality with per-request micropayments

Fit

Best for

  • —Developers who want zero-signup, pay-as-you-go API access
  • —AI agents with x402-compatible payment capabilities
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users who need detailed API documentation or response schemas before integrating
  • —Applications requiring free or subscription-based API access
  • —Users who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transfers/126 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transfers/126
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but the specific functionality of /api/v1/transfers/126 is undocumented. No request or response schema is available, and the docs/pricing/README pages are empty beyond a wallet-connect prompt. The 'transfers/126' path doesn't match any publicly listed API category, making it unclear what this endpoint actually does.

Warnings

  • —The /api/v1/transfers/126 path does not appear in the site's public API listing — its specific functionality is unknown.
  • —All documentation pages (docs, pricing, README, api) render only 'Connect wallet' with no substantive content.
  • —No request body schema or response schema is documented for this endpoint.
  • —The 'Premium API Access' description is generic and does not explain what the endpoint returns.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:00:06Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/jhR9CT
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart