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/70/inventory

What it does

This endpoint at lowpaymentfee.com provides access to a product inventory resource (product ID 70) via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a broad catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all gated behind x402 micropayments on the Base network using USDC.

The specific endpoint `/api/v1/products/70/inventory` is listed as "Premium API Access" and accepts POST requests. Payment is settled on-chain on Base in USDC (contract 0x8335…2913) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The platform advertises flat $0.02/request pricing across all its endpoints, with no API keys, no rate limits, and no minimum commitments required. The x402 challenge was successfully captured (HTTP 402 with version 1 challenge), confirming the endpoint is live.

Documentation is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint's actual data content (what inventory data is returned for product 70) is unknown from the available material. The platform appears to be a demonstration or early-stage x402 API marketplace.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestproduct-inventorypost-method

Use cases

  • —Querying product inventory data for product ID 70 via a single paid API call
  • —Demonstrating x402 protocol integration for agent-to-API micropayments
  • —Building automated purchasing or inventory-checking workflows that settle in USDC on Base

Fit

Best for

  • —Developers experimenting with x402 payment protocol integration
  • —Agents needing pay-per-call inventory data without API key management
  • —Projects requiring on-chain USDC micropayment settlement on Base

Not for

  • —Production inventory management systems (no documentation on data schema or reliability)
  • —Users who need detailed API documentation or OpenAPI specs before integrating
  • —High-volume use cases where $0.02/request adds up without bulk discounts

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/products/70/inventory \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/products/70/inventory
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on request/response schemas, no OpenAPI spec, no examples, and the actual data returned is unknown. The docs pages are empty beyond a wallet-connect prompt. This is effectively a stub listing.

Warnings

  • —No API documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
  • —No OpenAPI or request/response schema provided; actual data content of the inventory endpoint is unknown
  • —The endpoint name 'Premium API Access' is generic and does not describe what data is returned
  • —Platform appears to be early-stage or a demo; reliability and data quality are unverifiable

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 21:36:46Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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