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/34

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/34` is listed as "Premium API Access" and returns a 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02) per call. The platform advertises no API keys, no rate limits, and instant access — you simply attach an x402 payment header to each request.

The broader platform offers 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 utilities (geocoding, validation, conversion, generation). All endpoints are listed at the same $0.02/request price point.

This particular endpoint (`/api/v1/transfers/34`) is labeled "Premium API Access" but its actual functionality is not documented beyond that label. The crawled docs, pricing, API, and README pages all returned only a "Connect wallet" prompt with no additional content. Without further documentation or an OpenAPI schema, the specific input/output behavior of this endpoint remains unclear.

Capabilities

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

Use cases

  • —Programmatic access to API services without managing API keys or subscriptions
  • —Agent-driven workflows that need to pay per call using USDC on Base
  • —Testing x402 payment protocol integrations

Fit

Best for

  • —Developers wanting zero-commitment, pay-as-you-go API access
  • —AI agents that can settle payments via x402 on Base
  • —Users who prefer crypto micropayments over traditional billing

Not for

  • —Users who need detailed API documentation or OpenAPI schemas before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone without access to USDC on the Base network

Quick start

# The endpoint requires an x402 payment header with USDC on Base.
# Using curl, you'd first obtain a payment proof, then:
curl -X POST https://lowpaymentfee.com/api/v1/transfers/34 \
  -H "X-PAYMENT: <your-x402-payment-token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transfers/34
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no documentation of request/response formats, and the docs/pricing/README pages are all empty beyond a wallet connect prompt. The specific purpose of /api/v1/transfers/34 is undocumented.

Warnings

  • —No OpenAPI or schema documentation available for this endpoint
  • —The endpoint label 'Premium API Access' does not describe what the endpoint actually does
  • —All documentation pages (docs, pricing, README, api) returned only 'Connect wallet' with no useful content
  • —The specific functionality of /api/v1/transfers/34 is unknown — it does not match any of the listed API categories on the homepage

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:15:32Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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