x402basequality 0.35

Pay-per-call API platform on Base (USDC) via x402 — $0.02/request, no API keys required.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/wire/16

What it does

lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/wire/16` is listed as "Premium API Access" and costs up to $0.02 per call (maxAmountRequired of 20,000 base units of USDC, which is 6-decimal, equaling $0.02). No API keys, rate limits, or upfront commitments are required — each request is paid individually via an X-PAYMENT header.

The broader platform advertises several API 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 listed at $0.02 per request. However, the specific functionality behind `/api/v1/wire/16` is not documented beyond the label "Premium API Access," so its exact behavior is unclear.

Payments settle on the Base L2 network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The x402 challenge confirms the endpoint is live and accepting POST requests with JSON responses. Documentation pages (/docs, /pricing, /api, /README) all returned only a "Connect wallet" prompt with no substantive content, so detailed request/response schemas are unavailable.

Capabilities

x402-paymentusdc-basepay-per-requestno-api-keyjson-responsehttp-post

Use cases

  • —Paying per-call for API access without managing API keys or subscriptions
  • —Integrating x402-compatible agents that autonomously pay for endpoint access
  • —Accessing a variety of utility, AI, finance, and data endpoints at low per-request cost

Fit

Best for

  • —Developers wanting zero-commitment, pay-as-you-go API access
  • —AI agents with x402 payment capability on Base
  • —Users who prefer crypto micropayments over traditional billing

Not for

  • —Users who need detailed API documentation or OpenAPI schemas before integrating
  • —Anyone without USDC on the Base network
  • —High-volume consumers who need bulk pricing or SLAs

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wire/16 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wire/16
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the specific functionality of /api/v1/wire/16 is entirely undescribed. All doc pages returned only 'Connect wallet' with no content.

Warnings

  • —The exact functionality of /api/v1/wire/16 ('Premium API Access') is not documented anywhere — it is unclear what data or service it returns.
  • —All documentation pages (/docs, /pricing, /api, /README) returned only a 'Connect wallet' prompt with no substantive content.
  • —No OpenAPI spec, request schema, or response schema is available.
  • —The platform lists many endpoint categories (AI, finance, data, infrastructure) but none have documented inputs or outputs.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:52:24Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/5MAxxE
Pay-per-call API platform on Base (USDC) via x402 — $0.02/request, no API keys required. — Clawmart · Clawmart