Pay-per-request premium API access via x402 on Base network at $0.02/call in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol on the Base network. The specific endpoint `/api/v1/collections/7` accepts POST requests and charges 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), which equals $0.02 per request (USDC uses 6 decimals). Payment is settled on-chain on Base.
The broader lowpaymentfee.com platform offers a suite of APIs across 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 (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.
The specific functionality of the `/api/v1/collections/7` endpoint is not documented beyond the label "Premium API Access." The output schema indicates it accepts HTTP POST and is discoverable, but no request/response body schemas are provided. The docs, pricing, and API pages on the site appear to require wallet connection and do not expose further documentation.
Capabilities
Use cases
- —Accessing premium data or services without API key registration
- —Agent-driven workflows that need instant pay-per-use API access
- —Testing x402 payment protocol integrations on Base
Fit
Best for
- —Developers wanting frictionless pay-per-request APIs without signup
- —AI agents that can settle x402 payments autonomously
- —Users who prefer on-chain USDC micropayments over subscriptions
Not for
- —Users who need detailed API documentation before purchasing
- —High-volume consumers who want bulk pricing or subscriptions
- —Anyone without a Base-compatible wallet or USDC balance
Quick start
# Send a POST with x402 payment header to access the endpoint
curl -X POST https://lowpaymentfee.com/api/v1/collections/7 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <your-x402-payment-token>"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 the endpoint actually returns, no request/response schemas, and the specific purpose of '/api/v1/collections/7' is unknown beyond the generic label 'Premium API Access'.
Warnings
- —No request or response schema documented for this specific endpoint
- —The exact functionality of /api/v1/collections/7 is unclear — 'Premium API Access' is a generic label
- —Documentation pages require wallet connection and provide no readable content
- —Cannot verify what data or service is delivered after payment
Citations
- —Endpoint returns 402 with x402 challenge requiring 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/collections/7
- —All endpoints priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/collections/7