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/13

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 provider, 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, no rate limits, and no commitments required.

The specific endpoint `/api/v1/payments/13` is labeled "Premium API Access" but its exact functionality is not documented beyond that title. The x402 challenge confirms it is live, accepts POST requests, and requires a payment of up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.

The provider's landing page lists 16 endpoints across four categories but documentation pages (docs, pricing, README) all render only a "Connect wallet" prompt with no further content. As a result, request/response schemas, parameter details, and concrete usage examples are unavailable. The endpoint is confirmed live via its 402 challenge, but the lack of documentation makes it difficult to know what payload to send or what response to expect.

Capabilities

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

Use cases

  • —Accessing premium API functionality with per-call 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-gated APIs
  • —Agents that can settle USDC payments on Base automatically
  • —Use cases requiring no signup, no API key, instant access

Not for

  • —Users who need detailed API documentation or OpenAPI specs before integrating
  • —High-volume callers who prefer subscription-based pricing over per-call payments
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/13 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/13
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live via its 402 challenge and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no OpenAPI schema, no request/response examples, and the exact functionality behind 'Premium API Access' is undefined. Docs pages all render only 'Connect wallet' with no content.

Warnings

  • —The exact functionality of /api/v1/payments/13 ('Premium API Access') is not documented anywhere in the crawled material.
  • —All documentation pages (/docs, /pricing, /README, /api) render only 'Connect wallet' with no usable content.
  • —No request or response schema is available; callers cannot determine what payload to send or what to expect back.
  • —This endpoint's purpose is unclear — it may be a generic demo or placeholder.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 06:32:28Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

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