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/9

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/9` is listed as "Premium API Access" and returns a 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02 given USDC's 6 decimals) 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 $0.02 per request. Payments settle in USDC on Base to the address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3.

The specific functionality behind the `/api/v1/transfers/9` endpoint is not documented in the crawled material — the description simply says "Premium API Access" without further detail. The docs, pricing, and API pages all render only a "Connect wallet" prompt with no additional content. Because of this, the actual response payload and input parameters for this endpoint remain unknown.

Capabilities

x402-paymentusdc-basepay-per-requestno-api-keyjson-responsepost-method

Use cases

  • —Programmatic access to premium API functionality with per-request USDC micropayments
  • —Agent-driven workflows that need keyless, on-demand API access settled on Base
  • —Testing x402 payment flows against a live endpoint

Fit

Best for

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

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —Anyone without a Base-network USDC wallet
  • —High-volume consumers who would benefit from bulk pricing

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transfers/9 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transfers/9
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming pricing and payment details. However, there is no documentation of what the endpoint actually does, no input/output schema, no example responses, and the docs pages are empty. The listing is effectively a stub with only payment metadata available.

Warnings

  • —The actual functionality of /api/v1/transfers/9 is undocumented — 'Premium API Access' is the only description available.
  • —All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no substantive content.
  • —No OpenAPI spec, no input schema, and no example responses are available.
  • —The broader platform lists many endpoint categories but none have detailed documentation in the crawled material.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:21:02Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/XdeV9D
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart