x402basequality 0.35

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/customers/17

What it does

lowpaymentfee.com is an x402-enabled API platform that offers a variety of endpoints across data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories. All endpoints are priced at $0.02 per request, payable in USDC on the Base network with no API keys, no rate limits, and no commitments required.

The specific endpoint at `/api/v1/customers/17` is labeled "Premium API Access" and returns a 402 challenge requesting up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The endpoint accepts POST requests and returns application/json. Payment is settled on-chain to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.

The broader platform 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 pages (/docs, /pricing, /README) returned only a "Connect wallet" prompt with no substantive content, so the actual behavior and response schemas of these endpoints remain undocumented.

Capabilities

x402-paymentusdc-basepay-per-requestjson-responsepost-methodno-api-keycustomer-data

Use cases

  • —Accessing customer data records via a single paid API call
  • —Agent-driven workflows that need on-demand data without pre-registration
  • —Programmatic access to premium content gated behind x402 micropayments

Fit

Best for

  • —Developers wanting zero-signup, pay-as-you-go API access
  • —AI agents with USDC on Base that need to purchase data per-call
  • —Prototyping integrations without API key management

Not for

  • —High-volume batch processing where $0.02/request adds up quickly
  • —Users who need detailed API documentation and response schemas before integrating
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/customers/17 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/customers/17
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, there is no OpenAPI schema, no documented request/response format, no examples, and all documentation pages are empty stubs showing only 'Connect wallet'. The purpose of the /api/v1/customers/17 endpoint specifically is unclear beyond the generic 'Premium API Access' label.

Warnings

  • —Documentation pages (/docs, /pricing, /README) contain no useful content — only a 'Connect wallet' prompt
  • —No request body schema or response schema is documented for this endpoint
  • —The specific purpose of /api/v1/customers/17 is unclear — 'Premium API Access' is a generic label
  • —No OpenAPI specification available

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 22:48:45Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-28

Agent access

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