Pay-per-call premium API access on Base network via x402 protocol at $0.02/request in USDC.
What it does
This endpoint (endpoint-72) is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs settled via the x402 protocol on the Base network using USDC. The specific endpoint is labeled "Premium API Access" and accepts POST requests, returning application/json responses. Payment is 20,000 base units of USDC (6 decimals), which equals $0.02 per request.
The broader platform advertises endpoints across four categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.
Note that this specific endpoint (endpoint-72) does not correspond to any of the named endpoints listed on the site's landing page. Its exact functionality beyond "Premium API Access" is undocumented. The docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no additional technical documentation or schema information.
Capabilities
Use cases
- —Accessing premium API services without subscription or API key management
- —Making one-off paid API calls settled instantly on Base L2
- —Agent-driven workflows requiring programmatic pay-per-use access
Fit
Best for
- —Developers wanting zero-commitment pay-per-call API access
- —AI agents that can settle x402 payments autonomously
- —Users who prefer crypto-native micropayments over traditional billing
Not for
- —Users needing detailed API documentation or guaranteed SLAs
- —High-volume use cases where per-call pricing becomes expensive
- —Users without access to USDC on Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/endpoint-72 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation of what endpoint-72 actually does, no input/output schema, no examples, and the docs pages are empty. The listing is effectively a stub with only payment metadata available.
Warnings
- —Endpoint-72 is not listed among the named endpoints on the landing page; its specific functionality is unknown.
- —All documentation pages (docs, API, pricing, README) returned only 'Connect wallet' with no technical content.
- —No OpenAPI spec, input schema, or response examples are available.
- —Exact behavior and data returned by this endpoint cannot be verified.
Citations
- —The endpoint returns a 402 challenge requesting 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base networkhttps://lowpaymentfee.com/api/endpoint-72
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The platform lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com