x402basequality 0.30

x402-gated Premium API Access on Base, pay $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/charges/362

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall on the Base network. The specific resource path `/api/v1/charges/362` does not clearly map to any of the named API categories listed on the provider's landing page (Data & Analytics, AI & Machine Learning, Finance & Web3, Infrastructure), so its exact functionality is unclear. It may serve as a generic premium access charge or a specific resource not documented on the homepage.

The x402 challenge confirms the endpoint is live, accepting POST requests and requiring payment in USDC (contract 0x8335…2913 on Base). The maximum amount required is 20,000 base units, which at 6 decimals for USDC equals $0.02 per request. The provider advertises a flat $0.02/request pricing model across all their APIs with no API keys, no rate limits, and instant access.

The broader lowpaymentfee.com platform offers a variety of endpoints spanning analytics/metrics, AI inference (sentiment analysis, summarization, classification, embeddings), finance/crypto data (price feeds, exchange rates, gas estimates), and utility services (geocoding, validation, conversion). However, the specific `/api/v1/charges/362` endpoint lacks dedicated documentation, input/output schema details, or usage examples. The docs, pricing, and API pages all returned only a "Connect wallet" prompt with no substantive content.

Capabilities

x402-paymentusdc-paymentbase-networkpay-per-requestno-api-keypost-endpoint

Use cases

  • —Paying per-request for API access without needing an API key or subscription
  • —Agent-driven programmatic access to premium endpoints using x402 USDC payments
  • —Testing x402 payment flows on the Base network

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents needing keyless, pay-per-call API access
  • —Low-volume consumers who want no subscription commitments

Not for

  • —Users needing detailed API documentation or guaranteed SLAs
  • —High-volume production workloads where per-request pricing may add up
  • —Anyone requiring clear input/output schemas before integration

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/362 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/362
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no documentation, no input/output schema, and no examples for this specific resource. The docs/pricing/API pages are empty beyond a wallet-connect prompt. The exact purpose of /api/v1/charges/362 is unclear.

Warnings

  • —The specific endpoint /api/v1/charges/362 is not listed among the documented APIs on the provider's homepage — its purpose is unknown.
  • —No input or output schema is provided beyond the basic HTTP POST method declaration.
  • —All documentation pages (docs, pricing, API, README) returned only a 'Connect wallet' prompt with no substantive content.
  • —No OpenAPI spec, examples, or detailed documentation available.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:54:31Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/S3u7Jy
x402-gated Premium API Access on Base, pay $0.02 per request in USDC. — Clawmart · Clawmart