Pay-per-call API platform on Base (USDC) offering data, AI, finance, and utility endpoints at $0.02/request.
What it does
lowpaymentfee.com is an x402-enabled API platform that provides a broad catalog of pay-per-request endpoints settled in USDC on the Base network. The specific endpoint at `/api/resource/24` is labeled "Premium API Access" and accepts POST requests with payment via the x402 protocol. The 402 challenge for this endpoint advertises a maximum cost of 20,000 base units of USDC (0.02 USD) per call.
The broader platform lists 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 utilities (geocoding, validation, conversion, generation). All listed endpoints are priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.
Note that the specific endpoint `/api/resource/24` does not clearly map to any of the named endpoints on the landing page. There is no OpenAPI schema, no detailed documentation for request/response formats, and the crawled sub-pages (api, pricing, README) returned only a "Connect wallet" prompt with no additional content. The actual functionality behind this particular resource ID is unknown.
Capabilities
Use cases
- —Programmatic access to data analytics and reporting endpoints without subscription
- —On-demand AI inference (sentiment, summarization, classification, embeddings) paid per call
- —Fetching real-time financial data and crypto market quotes with micropayments
- —Geocoding and data conversion utilities with no account setup
Fit
Best for
- —Agents or bots that need instant, keyless API access paid in USDC
- —Low-volume or sporadic API consumers who want to avoid subscriptions
- —Developers prototyping with pay-as-you-go endpoints on Base
Not for
- —High-volume production workloads where $0.02/request adds up significantly
- —Users who need detailed API documentation, SDKs, or guaranteed SLAs
Quick start
curl -X POST https://lowpaymentfee.com/api/resource/24 \
-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 OpenAPI schema, no request/response documentation, and the specific resource '/api/resource/24' has no described functionality. Sub-pages returned no useful content. Effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available for this endpoint
- —The resource path /api/resource/24 does not correspond to any named endpoint on the landing page — its actual functionality is unknown
- —No request body schema or response examples are documented anywhere
- —Sub-pages (/api, /pricing, /README) returned only 'Connect wallet' with no content
Citations
- —The x402 challenge advertises maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base networkhttps://lowpaymentfee.com/api/resource/24
- —All listed endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The platform offers endpoints in Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com