x402basequality 0.30

x402-gated API endpoint on Base network, 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/156

What it does

This endpoint at `/api/v1/trades/156` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. The specific `/trades/156` resource is listed under "Premium API Access" but its exact functionality is not documented beyond that label — it likely returns trade-related data for a specific resource ID (156).

The endpoint is live and responds with a valid x402 challenge on Base network. Payment is settled in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The platform advertises flat $0.02/request pricing across all endpoints, no API keys, no rate limits, and instant access. The x402 version is 1, using the "exact" payment scheme with a 300-second timeout.

Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema, and no description of what data the `/trades/156` endpoint actually returns. The platform hosts many other endpoints across categories (analytics, AI, finance, utilities), all at the same $0.02 price point, but none have publicly visible documentation either.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keytrade-data

Use cases

  • —Fetching trade-related data for resource ID 156 via a single paid API call
  • —Integrating pay-per-request trade data into agent workflows without managing API keys
  • —Demonstrating x402 protocol payment flows on Base network

Fit

Best for

  • —Agents or developers wanting keyless, pay-per-call API access
  • —x402 protocol experimentation and integration testing
  • —Low-friction access to trade data without subscription commitments

Not for

  • —Users needing detailed API documentation or guaranteed SLAs before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone requiring non-crypto payment methods

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/trades/156 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/trades/156
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing, but there is zero documentation on what the endpoint actually does, what inputs it accepts, or what it returns. No OpenAPI spec, no examples, and all doc pages are empty. The listing is effectively a stub.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content
  • —No OpenAPI or request/response schema provided; impossible to know what this endpoint returns
  • —The specific purpose of /api/v1/trades/156 is unclear — 'Premium API Access' is a generic label
  • —No information on what POST body, if any, is expected

Citations

Provenance

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

Agent access

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