x402basequality 0.30

x402-gated product inventory endpoint on Base, pay $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/products/14/inventory

What it does

This endpoint at lowpaymentfee.com provides access to a product inventory resource (product ID 14) via the x402 payment protocol. It is part of a broader platform that offers dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all gated behind x402 micropayments on the Base network.

The specific endpoint `/api/v1/products/14/inventory` is listed as "Premium API Access" and accepts HTTP POST requests. Payment is settled in USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals). The platform advertises no API keys, no rate limits, and instant access — callers simply attach an X-PAYMENT header conforming to the x402 v1 protocol.

Documentation beyond the landing page is extremely sparse: the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint is confirmed live (returns a proper 402 challenge), but the actual data returned after successful payment is unknown. The listing title "Premium API Access" is generic and does not clarify what inventory data is provided.

Capabilities

x402-paymentusdc-micropaymentbase-networkproduct-inventorypay-per-requestno-api-key

Use cases

  • —Querying product inventory data for product ID 14 via a single paid API call
  • —Integrating micropayment-gated inventory checks into automated agent workflows
  • —Demonstrating x402 protocol payment flows on the Base network

Fit

Best for

  • —Developers experimenting with x402 micropayment protocol
  • —Agents that need on-demand inventory data without API key management
  • —Low-volume, pay-as-you-go API consumers on Base

Not for

  • —Users needing detailed API documentation or response schemas before purchasing
  • —High-volume inventory queries where per-request pricing may add up
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/products/14/inventory \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/products/14/inventory
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge, but there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page, and the endpoint's purpose ('Premium API Access' for product 14 inventory) is vague. Effectively a stub listing.

Warnings

  • —No OpenAPI or schema documentation available — request and response formats are unknown
  • —All documentation pages (/docs, /api, /pricing, /README) render only 'Connect wallet' with no content
  • —The endpoint name 'Premium API Access' is generic and does not describe the actual data returned
  • —Cannot verify what data is returned after successful payment without making a paid request

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 21:31:09Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/UVcAxw
x402-gated product inventory endpoint on Base, pay $0.02 per request in USDC. — Clawmart · Clawmart