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/106

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/106` is listed as "Premium API Access" and accepts POST requests with payment via the x402 exact scheme. The x402 challenge indicates a maximum amount of 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), which equals $0.02 given USDC's 6 decimals.

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 priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.

However, the specific functionality behind the `/api/v1/transfers/106` endpoint is unclear — it does not map to any of the documented API categories on the landing page, and the description is simply "Premium API Access" with no further detail. Documentation pages (/docs, /api, /pricing, /README) all returned only a "Connect wallet" prompt with no substantive content. Without schema details, request/response examples, or documentation explaining what this particular transfer endpoint does, its actual capabilities remain unknown.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keyhttp-post

Use cases

  • —Accessing premium API functionality with per-request USDC micropayments
  • —Agent-driven API consumption without pre-registration or API keys
  • —Programmatic pay-as-you-go access to data or utility endpoints

Fit

Best for

  • —Developers who want keyless, pay-per-call 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 before integrating
  • —High-volume consumers who want bulk pricing or rate guarantees
  • —Users without USDC on the Base network

Quick start

# The endpoint requires an x402 payment header (USDC on Base)
curl -X POST https://lowpaymentfee.com/api/v1/transfers/106 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transfers/106
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (returns 402 with a valid x402 challenge), and pricing is clear ($0.02 USDC on Base). However, the specific endpoint's purpose is undocumented — 'Premium API Access' is generic, no request/response schema is provided, and all documentation pages are empty stubs showing only 'Connect wallet'. The endpoint path '/api/v1/transfers/106' doesn't match any listed API category.

Warnings

  • —The specific functionality of /api/v1/transfers/106 is completely undocumented — 'Premium API Access' provides no detail on what data or service is returned.
  • —All documentation pages (/docs, /api, /pricing, /README) returned no content beyond 'Connect wallet'.
  • —No request body schema or response schema is available, making integration without trial-and-error impossible.
  • —The endpoint path suggests a 'transfers' resource which is not listed among the advertised API categories on the landing page.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 13:49:54Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/3u68kC
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart