x402basequality 0.25

Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/39

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource `/api/v1/accounts/39` is one of many endpoints offered by the platform, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, paid in USDC on the Base network with no API keys, rate limits, or commitments required.

The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain using USDC (contract `0x8335...2913` on Base) with an exact payment scheme. The maxAmountRequired of 20000 base units corresponds to $0.02 (USDC uses 6 decimals). The platform advertises a broad suite of sibling endpoints covering sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, and more — all at the same per-request price.

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 schema, no request/response examples, and no description of what the `/api/v1/accounts/39` endpoint specifically returns. The listing title "Premium API Access" is generic and does not clarify the endpoint's function. Prospective users should be aware that without documentation, the actual behavior of this specific endpoint is unknown.

Capabilities

x402-paymentusdc-basepay-per-requestno-api-keypost-methodjson-response

Use cases

  • —Accessing premium API data with per-request USDC micropayments on Base
  • —Agent-driven API consumption without API key management
  • —On-chain pay-as-you-go access to utility or data endpoints

Fit

Best for

  • —Developers wanting keyless, pay-per-use API access
  • —AI agents with x402-compatible payment capabilities
  • —Users who prefer on-chain USDC settlement on Base

Not for

  • —Users who need detailed API documentation before integrating
  • —Applications requiring free or subscription-based access
  • —Users without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/39 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/39
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the specific function of /api/v1/accounts/39 is entirely unknown. The docs pages are empty beyond a wallet-connect prompt.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
  • —The specific purpose of /api/v1/accounts/39 is undocumented and unclear
  • —No OpenAPI schema or request/response examples provided
  • —No robots.txt or agents.txt present

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:18:07Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/Hs2bsu
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart