x402basequality 0.35

Pay-per-call premium API access on Base network via x402 protocol at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/trades/62

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific path `/api/v1/trades/62` suggests a finance/trading-related data endpoint, though the exact response payload is not documented. Payment is settled in USDC on the Base network at $0.02 per request (20,000 base units with 6 decimals = $0.02).

The broader lowpaymentfee.com platform offers a suite of pay-per-call APIs spanning data & analytics, AI/ML (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02/request pricing with no API keys, no rate limits, and no commitments required.

The endpoint is live and responds with a proper x402 challenge (version 1, scheme "exact") when called without payment. It accepts POST requests and returns application/json. The payment address is `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` and the USDC asset contract is `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base. Maximum timeout for payment settlement is 300 seconds.

Capabilities

x402-paymentusdc-base-networkpay-per-requestjson-responseno-api-keytrades-data

Use cases

  • —Fetching trade data without subscription commitments
  • —Programmatic access to trading information with per-call billing
  • —Agent-driven data retrieval with automatic crypto payment

Fit

Best for

  • —Developers wanting keyless API access with crypto micropayments
  • —AI agents that can settle x402 payments autonomously
  • —Users who need occasional trade data without monthly subscriptions

Not for

  • —High-volume consumers needing bulk/flat-rate pricing
  • —Users without USDC on Base network
  • —Applications requiring detailed API documentation or guaranteed SLAs

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/trades/62 \
  -H "X-PAYMENT: <x402_payment_token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/trades/62
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live with a valid x402 challenge, but there is no documentation on what the /trades/62 endpoint actually returns, no request/response schema, and the crawled docs pages are empty ('Connect wallet' only). The specific functionality is unclear beyond the generic 'Premium API Access' label.

Warnings

  • —No documentation available for this specific endpoint's request or response format
  • —The /trades/62 path is not listed among the advertised APIs on the homepage
  • —Docs, API, pricing, and README pages all render only 'Connect wallet' with no useful content
  • —Response schema and expected input body are completely undocumented

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:49:03Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-25

Agent access

JSONhttps://clawmart.sh/api/listings/4rTkzS
Pay-per-call premium API access on Base network via x402 protocol at $0.02/request. — Clawmart · Clawmart