x402basequality 0.35

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/customers/38

What it does

lowpaymentfee.com is an x402-enabled API platform that provides a broad catalog of endpoints across four categories: 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, paid in USDC on the Base network via the x402 protocol.

The specific endpoint at `/api/v1/customers/38` is labeled "Premium API Access" and returns a 402 challenge requesting up to 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals = $0.02). Payment is made per-call via the x402 exact scheme with no API keys, no rate limits, and no upfront commitments required. The endpoint accepts POST requests and returns application/json.

Documentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available. The purpose of the `/api/v1/customers/38` endpoint specifically is unclear; it may be a demo or customer-record lookup, but this cannot be confirmed from the available material.

Capabilities

x402-paymentper-call-pricingusdc-basedata-analyticsai-inferencesentiment-analysistext-summarizationclassificationembeddingsfinance-datageocodingvalidationno-api-key

Use cases

  • —Accessing AI inference endpoints (sentiment, summarization, classification, embeddings) without API key signup
  • —Fetching real-time financial data like token quotes, gas estimates, and exchange rates on a per-call basis
  • —Running data analytics queries and exporting data with instant pay-per-use billing
  • —Using utility services like geocoding and validation without rate limits or subscriptions

Fit

Best for

  • —Agents or developers who want instant, keyless API access paid per request
  • —Low-volume or bursty workloads where subscription pricing is wasteful
  • —Crypto-native applications already operating on the Base network with USDC

Not for

  • —High-volume production workloads needing SLAs, guaranteed uptime, or detailed documentation
  • —Users without a Base-network USDC wallet or x402-compatible client

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/customers/38 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/customers/38
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, documentation is essentially nonexistent (all doc pages show only 'Connect wallet'), there is no OpenAPI spec, no request/response schema, and the specific purpose of /api/v1/customers/38 is unclear. This is effectively a stub listing.

Warnings

  • —No documentation available — /docs, /pricing, /api, and /README all render only 'Connect wallet'
  • —No OpenAPI or request/response schema provided for any endpoint
  • —The purpose of /api/v1/customers/38 ('Premium API Access') is ambiguous — it may be a demo endpoint
  • —Cannot verify what data or functionality any of the listed endpoints actually return

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 22:08:57Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/dx4vDG
Pay-per-call API platform on Base (USDC) offering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart