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/payments/294

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints on the platform are priced at $0.02 per request, payable in USDC on the Base network with no API keys, rate limits, or commitments required.

The specific endpoint `/api/v1/payments/294` is labeled "Premium API Access" but the crawled material does not clarify what data or functionality this particular path returns — it is not listed among the documented API categories on the landing page. The x402 challenge confirms the endpoint is live, accepts POST requests, and requires payment of up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimal places. Payment is settled on-chain to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.

Documentation beyond the landing page is essentially empty (all subpages just show "Connect wallet"), so the actual request/response schema for this endpoint is unknown. Agents should be aware that without further documentation, the payload format must be discovered experimentally or by contacting the provider.

Capabilities

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

Use cases

  • —Programmatic access to premium API functionality with per-call USDC micropayments
  • —Agent-driven workflows that need keyless, on-demand API access settled on Base
  • —Exploring x402 payment protocol integrations with minimal cost per request

Fit

Best for

  • —Developers experimenting with x402 pay-per-call patterns
  • —AI agents that need frictionless, keyless API access
  • —Low-volume consumers who prefer pay-as-you-go over subscriptions

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —High-volume consumers who would benefit from bulk pricing or rate-limited plans

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/294 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/294
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but the endpoint's actual functionality is undocumented — it doesn't appear in the site's listed APIs, all doc pages are empty, and no request/response schema is available. This is effectively a stub listing.

Warnings

  • —The endpoint path /api/v1/payments/294 is not listed among the documented APIs on the landing page; its actual functionality is unknown.
  • —All documentation pages (/docs, /api, /pricing, /README) return only 'Connect wallet' with no usable content.
  • —No OpenAPI spec, request schema, or response schema is available — payload format must be guessed or discovered experimentally.
  • —No robots.txt or agents.txt found on the origin.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 07:02:20Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/V5xMMT
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart