x402basequality 0.35

Pay-per-call API suite on Base (USDC) covering data, AI, finance, and utilities at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/item/1

What it does

lowpaymentfee.com is an x402-enabled API platform that offers a broad collection of endpoints spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. Every endpoint is priced at $0.02 per request, settled in USDC on the Base network. There are no API keys, no rate limits, and no minimum commitments — callers simply attach an x402 payment header to each request.

The specific endpoint at `/api/v1/item/1` is listed as "Premium API Access" and returns `application/json` via POST. Its x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (asset 0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.

The broader platform also advertises endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation — all at the same $0.02 price point. However, documentation beyond the landing page is extremely sparse: the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no further technical detail. No OpenAPI spec, request/response schemas, or usage examples are available from the crawl.

Capabilities

x402-paymentper-call-pricingusdc-basedata-analyticsai-inferencesentiment-analysistext-summarizationclassificationembeddingsfinance-datacrypto-quotesgeocodingutility-apis

Use cases

  • —Agents that need on-demand AI inference (sentiment, summarization, classification) without managing API keys
  • —Fetching real-time crypto quotes or gas estimates with per-call USDC micropayments
  • —Geocoding or data validation as a utility service inside automated workflows
  • —Exporting analytics data or generating reports on a pay-as-you-go basis

Fit

Best for

  • —AI agents that can settle x402 payments in USDC on Base
  • —Developers wanting zero-commitment, keyless API access
  • —Micropayment-friendly workloads where $0.02/call is cost-effective

Not for

  • —High-volume batch processing where per-call pricing adds up quickly
  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —Callers who cannot settle payments on the Base L2 network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/item/1 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/item/1
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation, and no examples — the docs pages all show only 'Connect wallet'. The purpose of /api/v1/item/1 specifically is unclear beyond the generic 'Premium API Access' label.

Warnings

  • —No OpenAPI or schema documentation available; all doc pages render only 'Connect wallet'
  • —The specific purpose and expected input/output of /api/v1/item/1 is undocumented
  • —No request or response examples could be obtained
  • —The breadth of advertised endpoints (AI, finance, geo, etc.) cannot be verified from available material

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 21:49:17Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/XBSjbQ
Pay-per-call API suite on Base (USDC) covering data, AI, finance, and utilities at $0.02/request. — Clawmart · Clawmart