x402basequality 0.35

x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys required.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/trades/189

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol on the Base network. The specific resource `/api/v1/trades/189` appears to be part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request in USDC.

The endpoint accepts POST requests and returns JSON. Payment is settled on-chain via USDC (contract 0x8335…2913) on Base to the payee address 0x1A2B…85F3, using the x402 "exact" scheme. The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. There are no API keys, no rate limits, and no signup — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

While the platform advertises a wide catalog of endpoints (metrics, reports, sentiment analysis, summarization, classification, embeddings, price feeds, exchange rates, geocoding, etc.), this specific listing covers only the `/api/v1/trades/189` resource. The exact data returned by this particular trade endpoint is not documented in the crawled material; the description simply says "Premium API Access." Documentation pages (/docs, /pricing, /README) all resolve but contain only a "Connect wallet" prompt with no further technical detail.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keyjson-responsepost-method

Use cases

  • —Accessing trade data on a per-request payment basis without needing API keys or subscriptions
  • —Integrating low-cost pay-per-call endpoints into AI agent workflows via x402
  • —Programmatic access to premium data feeds settled in USDC on Base

Fit

Best for

  • —Developers wanting zero-signup, pay-as-you-go API access
  • —AI agents that can settle x402 micropayments autonomously
  • —Users who prefer on-chain USDC payments over traditional billing

Not for

  • —Users who need detailed API documentation or OpenAPI schemas before integrating
  • —High-volume consumers who want bulk pricing or subscription discounts
  • —Anyone without a Base-compatible wallet or USDC balance

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/trades/189 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/trades/189
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and documentation pages are empty stubs showing only 'Connect wallet'. The purpose of /api/v1/trades/189 specifically is undocumented.

Warnings

  • —Documentation pages (/docs, /pricing, /README) contain no usable content — only a 'Connect wallet' prompt.
  • —The specific data returned by /api/v1/trades/189 is not documented anywhere in the crawled material.
  • —No OpenAPI spec or request/response schema is available.
  • —The broader platform advertises many endpoints but none have documented schemas or example payloads.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:53:43Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-26

Agent access

JSONhttps://clawmart.sh/api/listings/dnmwJz
x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys required. — Clawmart · Clawmart