x402basequality 0.35

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/308

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is one of many endpoints on the platform, which offers a broad catalog of pay-per-request APIs spanning 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, no rate limits, and no minimum commitments required.

The specific endpoint `/api/v1/payments/308` is listed as "Premium API Access" but the crawled documentation does not clarify what data or functionality this particular route returns — it does not appear in the publicly listed API catalog on the homepage. The x402 challenge confirms the endpoint is live, accepting POST requests, settling payments to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` in USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on Base. The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02.

Because the docs pages (`/docs`, `/api`, `/pricing`, `/README`) all returned only a "Connect wallet" prompt with no further content, there is no schema documentation, request/response examples, or detailed description of what this endpoint actually does. Prospective callers should be aware that the exact functionality behind this route is undocumented in the crawled material.

Capabilities

x402-paymentusdc-basepay-per-requestno-api-keypost-method

Use cases

  • —Programmatic access to a premium API endpoint with per-call USDC micropayments
  • —Agent-driven workflows that need keyless, on-demand API access settled on Base
  • —Testing x402 payment flows against a live, low-cost endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol integrations
  • —AI agents that need frictionless, keyless API access
  • —Users who prefer pay-per-use pricing with no subscriptions

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before calling
  • —Anyone without a Base-network USDC wallet or x402-compatible client

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/308 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/308
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, and no explanation of what this specific endpoint actually returns. The docs, pricing, and README pages are all blank beyond a wallet-connect prompt. This is effectively a stub listing.

Warnings

  • —The exact functionality of /api/v1/payments/308 is undocumented — it does not appear in the homepage's public API catalog.
  • —All documentation pages (/docs, /api, /pricing, /README) returned only 'Connect wallet' with no usable content.
  • —No request or response schema is available; callers cannot know what to send or expect back.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 07:02:53Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/gsR5h6
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart