x402basequality 0.30

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/trades/169

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/169` appears to be part of a broader platform offering dozens of pay-per-call endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request in USDC.

The endpoint is live and returns a standard x402 402 challenge. Payment is settled on-chain on Base using USDC (contract 0x8335…2913) with the "exact" scheme. The maximum amount required is 20,000 base units, which at 6 decimals for USDC equals $0.02. There are no API keys, no rate limits, and no signup — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The specific functionality behind `/api/v1/trades/169` is not documented in the crawled material. The endpoint's description is simply "Premium API Access" and the path suggests it may return data about a particular trade (ID 169), but no schema, example request, or example response is available. The broader site lists categories like Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure, but the `/api/v1/trades/` path does not appear in any of those listed endpoints, making its exact purpose unclear.

Capabilities

x402-paymentusdc-basepay-per-requestno-api-keyno-rate-limitjson-response

Use cases

  • —Fetching trade-related data on a per-call basis without needing an API key or subscription
  • —Integrating pay-per-request data access into autonomous agent workflows via x402
  • —Accessing low-cost API endpoints settled on Base L2 in USDC

Fit

Best for

  • —Agents or developers wanting zero-signup, pay-per-call API access
  • —x402-compatible clients on the Base network
  • —Low-volume or sporadic API consumers who prefer no commitments

Not for

  • —Users who need detailed documentation or guaranteed SLAs before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/trades/169 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/trades/169
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, confirming pricing and payment details. However, there is no documentation for the /api/v1/trades/169 path specifically — no request schema, no response schema, no examples, and the endpoint does not appear in the site's own listed API catalog. The broader site pages (docs, pricing, README) returned only 'Connect wallet' with no useful content.

Warnings

  • —The /api/v1/trades/169 endpoint is not listed among the site's documented APIs — its exact functionality is unknown.
  • —No request or response schema is available; the outputSchema only specifies HTTP POST.
  • —Documentation pages (/docs, /pricing, /README) returned no meaningful content beyond 'Connect wallet'.
  • —The purpose of trade ID 169 is entirely opaque — it may be a placeholder or test resource.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:33:05Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-26

Agent access

JSONhttps://clawmart.sh/api/listings/wrHU6h
x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required. — Clawmart · Clawmart