Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource `/api/v1/item/41` is one of many endpoints offered by the platform, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, paid in USDC on the Base network, with no API keys, rate limits, or commitments required.
The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain using USDC (contract 0x8335…2913 on Base) to address 0x1A2B…85F3, with a maximum timeout of 300 seconds. The platform advertises instant access with a simple pay-per-use model.
However, the specific functionality of `/api/v1/item/41` is unclear. It does not correspond to any of the named endpoints listed on the landing page (analytics, AI, finance, or utility APIs). The docs, pricing, and README pages all returned only a "Connect wallet" prompt with no substantive documentation. Without further information, the exact input/output behavior of this particular endpoint cannot be determined.
Capabilities
Use cases
- —Accessing premium API data without needing API keys or subscriptions
- —Making one-off paid API calls settled in USDC on Base
- —Agent-driven workflows that need instant, keyless API access with crypto payment
Fit
Best for
- —Developers who want pay-per-use API access without signup
- —AI agents that can settle x402 payments autonomously on Base
- —Users who prefer on-chain micropayments over traditional billing
Not for
- —Users who need detailed API documentation or guaranteed SLAs
- —Anyone without a Base-compatible USDC wallet
- —High-volume use cases where $0.02/request adds up significantly
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/item/41 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but the specific functionality of /api/v1/item/41 is undocumented. No OpenAPI schema, no request/response examples, and all doc pages returned only 'Connect wallet' with no content. The purpose of this particular item endpoint is unknown.
Warnings
- —The specific functionality of /api/v1/item/41 is not documented anywhere in the crawled material — it does not match any named endpoint on the landing page.
- —All documentation pages (docs, pricing, README, api) returned only a 'Connect wallet' prompt with no substantive content.
- —No OpenAPI spec, request schema, or response schema is available.
- —The exact input parameters and output format are unknown.
Citations
- —Endpoint returns 402 with x402 challenge, confirming it is livehttps://lowpaymentfee.com/api/v1/item/41
- —Price is $0.02 per request (maxAmountRequired=20000 in USDC with 6 decimals = $0.02)https://lowpaymentfee.com
- —Payment is in USDC on Base network to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3https://lowpaymentfee.com/api/v1/item/41
- —Platform advertises no API keys, no rate limits, instant access, Base networkhttps://lowpaymentfee.com
- —Available API categories include Data & Analytics, AI & ML, Finance & Web3, and Infrastructurehttps://lowpaymentfee.com