x402basequality 0.30

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/charges/194

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource at `/api/v1/charges/194` accepts POST requests and requires payment of up to 20,000 base units of USDC (0x8335…2913) on the Base network, which translates to $0.02 per request (USDC uses 6 decimals). Payment is settled on-chain to the specified wallet address with a 300-second timeout window.

The broader lowpaymentfee.com platform advertises a suite of APIs across four categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments.

However, the specific endpoint `/api/v1/charges/194` is labeled only as "Premium API Access" with no further documentation about what data or functionality it returns. The docs, pricing, and API pages on the site all render only a "Connect wallet" prompt with no additional technical documentation or schema details. Without more information, it is unclear what payload this particular endpoint expects or returns.

Capabilities

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

Use cases

  • —Accessing premium API functionality with per-request USDC micropayments on Base
  • —Agent-driven workflows that need keyless, pay-as-you-go API access
  • —Testing x402 payment protocol integrations against a live endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents needing keyless API access with on-chain settlement
  • —Low-volume, pay-per-use API consumption without subscriptions

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —High-volume use cases where per-request crypto payments add overhead
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/194 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/194
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming it accepts USDC payments on Base at $0.02/request. However, there is no documentation on what this specific endpoint does, no input/output schema, no example requests or responses, and the site's docs pages are empty beyond a wallet-connect prompt. The listing title 'Premium API Access' is generic and uninformative.

Warnings

  • —No documentation available — docs, pricing, and API pages only show 'Connect wallet' with no technical content
  • —The specific functionality of /api/v1/charges/194 is unknown; 'Premium API Access' is not descriptive
  • —No input or output schema provided; callers cannot know what payload to send or what to expect back
  • —The broader site lists many API categories but it is unclear if they are all functional or placeholders

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:31:10Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

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