x402basequality 0.30

x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/trades/54

What it does

lowpaymentfee.com is an x402 protocol API platform that gates access to a variety of endpoints behind per-request micropayments settled in USDC on the Base network. The specific endpoint at `/api/v1/trades/54` is listed as "Premium API Access" and costs up to $0.02 per call (maxAmountRequired of 20,000 base units of USDC, which has 6 decimals = $0.02). Payment is handled via the x402 exact scheme — callers attach an X-PAYMENT header with a signed payment to the payTo address, and the server fulfills the request upon verification.

The broader platform advertises four categories of APIs: 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 the same $0.02/request price point. The platform emphasizes no API keys, no rate limits, no minimums, and instant access.

However, the specific `/api/v1/trades/54` endpoint is not listed among the advertised API categories on the landing page, and no documentation or schema is available describing what it accepts or returns. The docs, pricing, and API pages all render only a "Connect wallet" prompt with no further content. Without request/response schemas or examples, the actual functionality of this particular endpoint remains unclear.

Capabilities

x402-paymentusdc-baseper-request-micropaymentjson-responsepost-methodno-api-keyno-rate-limit

Use cases

  • —Accessing trade-related data via a single micropayment without needing an API key
  • —Integrating pay-per-request endpoints into AI agent workflows on the Base network
  • —Programmatic access to premium data behind x402 payment gates

Fit

Best for

  • —Developers wanting zero-commitment, pay-per-call API access
  • —AI agents with x402-compatible wallets on Base
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users who need detailed API documentation and schemas 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/54 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <signed-x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/trades/54
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, no examples, and the specific /api/v1/trades/54 path is not listed among the platform's advertised APIs. The docs pages are empty beyond a wallet-connect prompt.

Warnings

  • —The /api/v1/trades/54 endpoint is not listed among the platform's advertised APIs — its purpose is unknown.
  • —No request body schema or response schema is documented anywhere.
  • —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no usable content.
  • —Functionality of this specific endpoint cannot be verified without making a paid request.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:49:35Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-25

Agent access

JSONhttps://clawmart.sh/api/listings/8WTTzD
x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart