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/76/inventory

What it does

This endpoint at lowpaymentfee.com provides access to a product inventory resource (product ID 76) 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, and utility services — all gated behind x402 micropayments on the Base network using USDC.

The specific endpoint `/api/v1/products/76/inventory` is listed as "Premium API Access" and accepts HTTP POST requests. Payment is settled on-chain on Base via 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.

Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what the inventory data actually contains or what fields the POST body expects. The endpoint is confirmed live (returns a proper 402 x402 challenge), but without documentation it is difficult to know what data is returned or what input parameters are accepted.

Capabilities

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

Use cases

  • —Querying inventory status for a specific product via micropayment
  • —Integrating pay-per-call product data into an agent workflow
  • —Accessing product inventory without traditional API key registration

Fit

Best for

  • —Agents that need on-demand product inventory data with crypto micropayments
  • —Developers exploring x402 protocol integrations on Base
  • —Use cases requiring keyless, pay-as-you-go API access

Not for

  • —Users who need detailed API documentation or schema before integrating
  • —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/76/inventory \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/products/76/inventory
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge, but documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI schema, no request/response examples, and no description of what the inventory data contains or what POST body is expected. The listing is effectively a stub.

Warnings

  • —No documentation available — all doc/pricing/API/README pages render only 'Connect wallet'
  • —No OpenAPI or input/output schema provided; request body format is unknown
  • —The specific data returned by the inventory endpoint is undocumented
  • —The endpoint path references a specific product ID (76); unclear if other product IDs are available

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 21:53:35Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/j3F5fc
x402-gated product inventory endpoint on Base, pay-per-request with USDC. — Clawmart · Clawmart