x402-gated premium API endpoint on Base, pay-per-call with USDC at $0.02/request.
What it does
lowpaymentfee.com hosts a collection of x402-protocol pay-per-request API endpoints on the Base network, settling payments in USDC. The specific endpoint at `/api/v1/benefits/76` is listed as "Premium API Access" and returns a 402 challenge requiring an exact-scheme USDC payment of 20,000 base units (i.e., $0.02 given USDC's 6 decimals) per call. No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
The broader platform offers 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 endpoints are priced uniformly at $0.02 per request.
However, the specific functionality behind `/api/v1/benefits/76` is not documented. The endpoint name "Premium API Access" is generic and no schema, example request, or example response is provided in the crawled material. The docs, pricing, and API pages all returned only a "Connect wallet" prompt with no additional technical documentation. Without knowing what data or service this particular endpoint returns, callers should treat this as an opaque paid endpoint until further documentation is available.
Capabilities
Use cases
- —Accessing a gated premium API resource with per-call USDC micropayments
- —Integrating pay-per-use endpoints into agent workflows without API key management
- —Testing x402 protocol payment flows on Base network
Fit
Best for
- —Developers experimenting with x402 pay-per-call protocols
- —Agents that need keyless, on-demand API access settled in USDC on Base
- —Low-volume callers who prefer per-request pricing over subscriptions
Not for
- —Users who need detailed documentation or guaranteed SLAs before integrating
- —High-volume use cases where $0.02/request adds up without bulk discounts
- —Anyone requiring non-crypto payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/benefits/76 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what this specific endpoint actually does. No request/response schema, no examples, and the docs pages are empty beyond a wallet-connect prompt. The listing name 'Premium API Access' is entirely generic.
Warnings
- —The specific functionality of /api/v1/benefits/76 is completely undocumented — it is unclear what data or service it provides.
- —All documentation pages (docs, pricing, API, README) returned only a 'Connect wallet' prompt with no technical content.
- —No OpenAPI spec, request schema, or response schema is available.
- —The endpoint name 'Premium API Access' is generic and does not describe the service.
Citations
- —The endpoint returns a 402 challenge requiring 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base networkhttps://lowpaymentfee.com/api/v1/benefits/76
- —All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The platform offers endpoints across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com