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/60

What it does

lowpaymentfee.com is an x402-enabled API platform that offers a broad set of endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities. Every endpoint costs $0.02 per request, paid in USDC on the Base network with no API keys, no rate limits, and no commitments required. The specific endpoint at `/api/v1/transfers/60` is listed as "Premium API Access" and accepts POST requests settled via the x402 exact-payment scheme.

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 (geocoding, validation, conversion, generation). All endpoints follow the same $0.02 pricing model.

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 spec, no request/response schema documentation, and no usage examples available from the crawled content. The x402 challenge confirms the endpoint is live and accepts USDC (contract 0x8335…) on Base, with a max amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals).

Capabilities

x402-paymentusdc-base-networkpay-per-requestdata-analyticsai-inferencesentiment-analysistext-summarizationclassificationembeddingsfinance-datacrypto-quotesgeocodingvalidationconversion

Use cases

  • —Accessing AI inference endpoints (sentiment, summarization, classification, embeddings) without API key management
  • —Fetching real-time financial data and crypto quotes on a per-request basis
  • —Using utility services like geocoding, validation, and data conversion with micropayments
  • —Integrating pay-per-use analytics and data export into agent workflows

Fit

Best for

  • —Agents needing low-friction, keyless API access paid in USDC
  • —Developers who want pay-as-you-go pricing with no subscription commitment
  • —Web3-native applications that can settle payments on Base

Not for

  • —Users who need detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who would benefit from bulk/subscription pricing

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transfers/60 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transfers/60
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is zero documentation beyond the landing page listing. No OpenAPI spec, no request/response schemas, no examples, and all doc pages just show 'Connect wallet'. The specific endpoint '/api/v1/transfers/60' has no description beyond its title. This is effectively a stub listing.

Warnings

  • —No OpenAPI specification or request/response schema available
  • —All documentation pages (/docs, /api, /pricing, /README) render only 'Connect wallet' with no content
  • —The specific endpoint /api/v1/transfers/60 ('Premium API Access') has no description of what it actually does or what inputs it expects
  • —Cannot verify what data or functionality any of these endpoints actually return

Citations

Provenance

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

Agent access

JSONhttps://clawmart.sh/api/listings/2TvRae
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart