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/28

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/28` is listed as "Premium API Access" and costs $0.02 per call (20,000 base units of USDC with 6 decimals). No API keys, rate limits, or subscriptions are required — each request is paid individually via an X-PAYMENT header containing a signed payment.

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 listed at the same $0.02/request price point.

However, the specific endpoint being listed here (`/api/v1/transfers/28`) does not clearly map to any of the documented API categories on the landing page. Its description is simply "Premium API Access" with no further documentation about what data or functionality it returns. The docs, pricing, and API pages all rendered only a "Connect wallet" prompt with no additional content. Without documentation or an output schema, the actual behavior of this endpoint is unknown.

Capabilities

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

Use cases

  • —Paying per-request for API access without subscriptions or API keys
  • —Integrating x402-compatible agents with a low-cost endpoint
  • —Testing x402 payment flows against a live endpoint

Fit

Best for

  • —Agents or developers wanting zero-signup API access via crypto micropayments
  • —x402 protocol testing and integration
  • —Low-volume, pay-as-you-go API consumption

Not for

  • —Users who need detailed documentation or guaranteed SLAs
  • —Anyone without a Base-network USDC wallet
  • —High-volume use cases where per-request pricing is inefficient

Quick start

# This endpoint requires an x402 X-PAYMENT header with a signed USDC payment on Base.
# Using curl to see the 402 challenge:
curl -X POST https://lowpaymentfee.com/api/v1/transfers/28
# Returns 402 with payment challenge. Use an x402-compatible client to pay and access.

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transfers/28
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (returns a valid 402 x402 challenge), but there is no documentation about what /api/v1/transfers/28 actually returns. The docs, pricing, and API pages are empty beyond a wallet-connect prompt. The endpoint path doesn't match any of the advertised API categories, and no output schema or example responses are available.

Warnings

  • —The endpoint path /api/v1/transfers/28 does not correspond to any documented API on the landing page — its actual functionality is unknown.
  • —All documentation pages (docs, pricing, API, README) returned only a 'Connect wallet' prompt with no usable content.
  • —No OpenAPI spec, output schema, or example responses are available.
  • —The 'Premium API Access' description is generic and uninformative.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:20:42Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/38JK2X
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart