x402basequality 0.35

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/148

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/148` 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 challenge (HTTP 402) requiring an `X-PAYMENT` header with an exact-scheme payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a 300-second timeout. The response MIME type is `application/json` and the input method is HTTP POST.

The specific functionality behind `/api/v1/trades/148` is not documented beyond the generic label "Premium API Access." The broader site lists categories like metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation — but this particular trades endpoint does not appear in the site's public catalog. No OpenAPI schema, request/response examples, or detailed documentation were found; the docs, pricing, and API pages all render only a "Connect wallet" prompt with no additional content.

Capabilities

x402-paymentusdc-basepay-per-requestjson-apino-api-keytrades-data

Use cases

  • —Accessing trade data behind a per-request USDC paywall without needing API keys or subscriptions
  • —Agent-driven workflows that need to purchase individual API calls programmatically on Base
  • —Integrating low-cost pay-as-you-go data endpoints into automated pipelines

Fit

Best for

  • —Developers wanting zero-commitment, pay-per-use API access settled in USDC on Base
  • —AI agents that can autonomously pay for API calls via x402
  • —Users who prefer crypto micropayments over traditional API key subscriptions

Not for

  • —Users who need detailed documentation or OpenAPI specs before integrating
  • —High-volume consumers who would benefit from bulk pricing or rate-limited plans
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/trades/148 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/trades/148
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no documentation, no OpenAPI schema, no request/response examples, and the specific /trades/148 resource is not listed in the site's public catalog. The docs pages are empty beyond a wallet-connect prompt. Effectively a stub listing.

Warnings

  • —The /api/v1/trades/148 endpoint is not listed in the site's public API catalog — its exact functionality is unknown.
  • —No OpenAPI schema, request body schema, or response examples are available.
  • —All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no usable content.
  • —The purpose and data returned by this specific trades endpoint cannot be verified from available materials.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:37:17Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-26

Agent access

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