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/385

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 on the platform share a uniform pricing model of $0.02 per request, settled in USDC on the Base network with no API keys, rate limits, or commitments required.

The specific endpoint `/api/v1/payments/385` is listed under the title "Premium API Access" but the crawled material does not clarify what data or functionality this particular path returns — it is not among the explicitly documented endpoints on the landing page (which cover analytics, AI inference, finance, and utility services). The x402 challenge confirms the endpoint is live, accepts POST requests, charges a maximum of 20,000 base units of USDC (i.e., $0.02 given USDC's 6 decimals), and pays out to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base.

Documentation is extremely thin — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no examples available. The endpoint is confirmed live via the 402 challenge, but without documentation it is unclear what request body to send or what response to expect.

Capabilities

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

Use cases

  • —Programmatic access to a premium API resource with per-call USDC micropayments
  • —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
  • —Demonstrating x402 payment protocol integration for developers

Fit

Best for

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

Not for

  • —Users who need detailed API documentation or schemas before integrating
  • —High-volume production workloads requiring SLAs or guaranteed uptime
  • —Anyone who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/385 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/385
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live via a valid x402 402 challenge and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no OpenAPI spec, no request/response schema, and the specific functionality of /api/v1/payments/385 is not described anywhere in the crawled material. This is effectively a stub listing.

Warnings

  • —The specific endpoint /api/v1/payments/385 is not listed among the documented APIs on the landing page — its purpose is unknown.
  • —All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no usable content.
  • —No OpenAPI spec, request schema, or response schema is available.
  • —Functionality behind 'Premium API Access' is entirely unspecified.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 07:22:17Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/L7avgw
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart