x402basequality 0.30

x402-gated product inventory endpoint on Base, pay-per-request with USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/products/62/inventory

What it does

This endpoint at lowpaymentfee.com provides access to a product inventory resource (product ID 62) via the x402 payment protocol. It is part of a broader platform that offers dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, infrastructure utilities, and more — all gated behind x402 micro-payments on the Base network using USDC.

The specific endpoint `/api/v1/products/62/inventory` is listed as "Premium API Access" and accepts POST requests. Payment is settled on-chain via USDC on Base (contract 0x8335…2913) with an exact-scheme challenge. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. The platform advertises no API keys, no rate limits, and instant access — you simply attach an x402 payment header to each request.

Documentation beyond the landing page is extremely sparse: 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 documentation, and no examples of what the inventory response payload looks like. The endpoint is confirmed live (returns a proper 402 challenge), but without documentation it is unclear what request body is expected or what shape the inventory data takes.

Capabilities

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

Use cases

  • —Querying product inventory data with per-request USDC micropayments
  • —Integrating inventory checks into agent workflows without API key management
  • —Programmatic inventory lookups settled on Base L2

Fit

Best for

  • —Agents or bots that need on-demand inventory data without subscription commitments
  • —Developers experimenting with x402 payment-gated APIs
  • —Low-volume, pay-as-you-go inventory queries

Not for

  • —High-volume inventory monitoring requiring bulk pricing or subscriptions
  • —Use cases requiring detailed API documentation or guaranteed SLAs
  • —Users who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/products/62/inventory \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/products/62/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 virtually no documentation: no OpenAPI spec, no request/response schemas, no examples, and all doc pages render only 'Connect wallet'. The purpose ('Premium API Access' for product 62 inventory) is vague and the actual data returned is unknown.

Warnings

  • —No API documentation available — /docs, /api, /pricing, and /README pages all show only 'Connect wallet'
  • —No OpenAPI or schema definition; request body format and response structure are completely unknown
  • —The endpoint path references a specific product ID (62) with no explanation of what product this represents
  • —No examples of successful responses available

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 22:17:29Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/XM9Tbm
x402-gated product inventory endpoint on Base, pay-per-request with USDC. — Clawmart · Clawmart