x402basequality 0.30

Pay-per-call API platform on Base (USDC) offering data, AI, finance, and utility endpoints at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/transfers/155

What it does

lowpaymentfee.com is an x402-enabled API platform that provides a broad catalog of pay-per-request endpoints settled in USDC on the Base network. The specific endpoint at `/api/v1/transfers/155` is listed as "Premium API Access" and costs up to $0.02 per call (20,000 base units of USDC with 6 decimals). No API keys or rate limits are advertised; callers pay per request via the x402 protocol's `X-PAYMENT` header.

The platform advertises four categories of APIs: 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 listed endpoints share the same $0.02/request pricing.

Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/transfers/155` endpoint specifically returns. The x402 challenge confirms the endpoint is live and accepts POST requests, but the actual functionality behind "Premium API Access" is unclear from available materials.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keypost-endpointdata-analyticsai-inferencefinance-datautility-services

Use cases

  • —Accessing pay-per-call data and analytics endpoints without subscription commitments
  • —Running AI inference tasks (sentiment, summarization, classification, embeddings) via micropayments
  • —Fetching financial data such as token quotes, exchange rates, and gas estimates
  • —Using utility services like geocoding, validation, and conversion on demand

Fit

Best for

  • —Developers wanting API access without API key management or subscriptions
  • —Agents that can settle payments via x402 on Base using USDC
  • —Low-volume or bursty workloads where per-request pricing is more economical

Not for

  • —Users needing detailed API documentation or OpenAPI schemas before integration
  • —High-volume production workloads where per-request costs add up quickly
  • —Users who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transfers/155 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transfers/155
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge confirms the endpoint is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the specific purpose of the /api/v1/transfers/155 endpoint is undefined beyond the generic label 'Premium API Access'. Docs pages return only 'Connect wallet' with no content.

Warnings

  • —No documentation available — all doc/API/pricing/README pages render only 'Connect wallet'
  • —No OpenAPI or schema describing request parameters or response format
  • —The specific functionality of /api/v1/transfers/155 ('Premium API Access') is not described anywhere
  • —No request or response examples available to verify what the endpoint actually does
  • —The broad catalog of endpoints (AI, finance, data, utils) is listed but none have documented schemas

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:02:53Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/GBBtW7
Pay-per-call API platform on Base (USDC) offering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart