x402basequality 0.30

Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/transactions/95

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol on the Base network. It accepts POST requests and charges 0.02 USDC per call (20000 base units with 6 decimals) settled in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base. No API keys or rate limits are required — payment is handled inline via the X-PAYMENT header.

The provider's landing page advertises a broad suite of endpoints across 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 (geocoding, validation, conversion, generation). All endpoints are listed at $0.02/request. However, the specific endpoint `/api/v1/transactions/95` is described only as "Premium API Access" with no further documentation on what data or functionality it returns.

Documentation is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no example request/response, and no description of the response schema for this particular endpoint. The endpoint is confirmed live (returns a valid 402 challenge), but what it actually delivers upon payment is unknown.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keypost-method

Use cases

  • —Accessing premium data or services with per-request USDC micropayments
  • —Integrating pay-as-you-go API calls without managing API keys or subscriptions
  • —Agent-driven workflows that need instant, keyless API access on Base

Fit

Best for

  • —Developers wanting zero-commitment pay-per-use API access
  • —AI agents with x402-compatible payment capabilities
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users who need detailed documentation or guaranteed SLAs before paying
  • —Anyone without USDC on Base network
  • —High-volume use cases where per-request pricing may add up

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transactions/95 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transactions/95
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge, but there is zero documentation on what the endpoint actually returns. No OpenAPI spec, no example responses, no description of the 'transactions/95' resource. The landing page lists many endpoints but provides no technical detail beyond pricing.

Warnings

  • —No documentation available — /docs, /api, /pricing, /README all show only 'Connect wallet'
  • —No OpenAPI or schema describing what this endpoint returns upon successful payment
  • —The specific path '/api/v1/transactions/95' is not listed on the provider's landing page among advertised endpoints
  • —Response format and content are completely unknown

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 13:49:26Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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