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/186

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/186` 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. No API keys or rate limits are required; callers simply attach an X-PAYMENT header with a valid x402 payment proof.

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.

However, the specific functionality behind `/api/v1/transfers/186` is not documented beyond the label "Premium API Access." The crawled docs, pricing, and README pages all returned only a "Connect wallet" prompt with no additional technical documentation, schemas, or example responses. Without paying for a request, the actual response format and data returned by this endpoint remain unknown.

Capabilities

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

Use cases

  • —Accessing premium data or services without API key registration
  • —Making one-off API calls paid directly in USDC on Base
  • —Agent-driven workflows that need frictionless pay-per-use endpoints

Fit

Best for

  • —Developers who want instant API access without signup or API keys
  • —AI agents that can settle x402 payments autonomously
  • —Users already holding USDC on the Base network

Not for

  • —Users who need detailed documentation or guaranteed SLAs before purchasing
  • —Anyone without USDC on Base network or an x402-compatible client

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transfers/186 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transfers/186
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, but there is no documentation, no OpenAPI schema, no example responses, and the actual functionality behind 'Premium API Access' at /api/v1/transfers/186 is completely undocumented. The crawled pages beyond the landing page returned only 'Connect wallet' with no useful content.

Warnings

  • —The specific functionality of /api/v1/transfers/186 ('Premium API Access') is not documented anywhere in the crawled material.
  • —All documentation, pricing, API, and README pages returned only 'Connect wallet' with no technical content.
  • —No OpenAPI schema, request/response examples, or detailed endpoint descriptions are available.
  • —The endpoint path '/api/v1/transfers/186' with a numeric ID suggests a resource-specific route, but what 'transfer 186' represents is unknown.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:05:39Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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