Pay-per-call premium API access on Base network via x402 protocol at $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific endpoint `/api/v1/transactions/368` accepts POST requests and charges 20,000 base units of USDC (USD Coin, 6 decimals) on the Base network, which equals $0.02 per request. Payment is handled inline via the X-PAYMENT header with no API keys or rate limits required.
The broader lowpaymentfee.com platform offers multiple API categories including 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 utilities (geocoding, validation, conversion, generation). All endpoints are uniformly priced at $0.02 per request.
However, the specific functionality of the `/api/v1/transactions/368` endpoint is unclear from available documentation. The title "Premium API Access" is generic and no request/response schema details are provided beyond the x402 challenge metadata. The docs, pricing, and API pages all render only a "Connect wallet" prompt with no additional technical documentation.
Capabilities
Use cases
- —Accessing premium API services without subscription or API key management
- —Making one-off paid API calls settled in USDC on Base L2
- —Integrating pay-per-use endpoints into autonomous agent workflows
Fit
Best for
- —Developers wanting zero-commitment pay-per-call API access
- —Agents that can settle payments in USDC on Base network
- —Users who prefer no-signup, no-rate-limit API consumption
Not for
- —Users needing detailed API documentation or response schemas before purchasing
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Developers who cannot transact in crypto on Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/transactions/368 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation on what this specific endpoint actually does, no request/response schema, and no examples. The docs pages are empty beyond a wallet connect prompt.
Warnings
- —No documentation available for the specific /api/v1/transactions/368 endpoint beyond the generic title 'Premium API Access'
- —No request body schema or response schema documented
- —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no technical content
- —The actual functionality delivered by this endpoint is unknown
Citations
- —Endpoint charges 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base networkhttps://lowpaymentfee.com/api/v1/transactions/368
- —All endpoints priced at $0.02 per request with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —Platform offers Data & Analytics, AI & ML, Finance & Web3, and Infrastructure API categorieshttps://lowpaymentfee.com