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/accounts/70

What it does

lowpaymentfee.com is an x402-enabled API platform that offers a collection of endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services. All endpoints are paid per-request using USDC on the Base network at $0.02 per call, with no API keys, no rate limits, and no minimum commitments required.

The specific endpoint at `/api/v1/accounts/70` is listed as "Premium API Access" and accepts POST requests. The x402 challenge confirms it is live, requesting up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is settled on-chain to the specified payTo address.

The broader platform advertises 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 (geocoding, validation, conversion, generation). However, the crawled documentation pages (docs, pricing, README) all returned only a "Connect wallet" prompt with no substantive content, so the actual functionality, request/response schemas, and data sources behind these endpoints remain undocumented and unverifiable.

Capabilities

x402-paymentper-request-billingusdc-base-networkno-api-keypost-endpointpay-per-use

Use cases

  • —Accessing premium API data without managing API keys or subscriptions
  • —Making one-off paid API calls settled in USDC on Base
  • —Agent-driven workflows that need low-friction, per-call payment endpoints

Fit

Best for

  • —Developers wanting zero-commitment, pay-as-you-go API access
  • —AI agents that can settle x402 payments autonomously on Base
  • —Projects needing low-cost per-request pricing without rate limits

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before purchasing
  • —Anyone without a Base-compatible USDC wallet or x402 client

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/70 \
  -H "Content-Type: application/json"
# Returns 402 with x402 challenge; attach X-PAYMENT header with USDC payment proof to access.

Example

Response

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://lowpaymentfee.com/api/v1/accounts/70",
      "description": "Premium API Access",
      "maxAmountRequired": "20000",
      "maxTimeoutSeconds": 300
    }
  ],
  "x402Version": 1
}

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/70
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation, no request/response schema, and no explanation of what 'Premium API Access' at /api/v1/accounts/70 actually returns. All doc/pricing/README pages show only 'Connect wallet' with no content. This is effectively a stub listing.

Warnings

  • —No documentation available — all doc pages return only 'Connect wallet' with no content
  • —No request or response schema provided; unclear what data this endpoint returns
  • —The endpoint path '/api/v1/accounts/70' with description 'Premium API Access' gives no indication of its actual functionality
  • —Cannot verify any of the advertised capabilities (AI, analytics, finance, etc.) due to lack of documentation

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:45:10Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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