x402-gated premium API endpoint on Base, pay-per-call with USDC at $0.02/request.
What it does
This endpoint is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities. The specific resource at `/api/v1/generate/resource/113` is listed as "Premium API Access" but its exact functionality is not documented beyond that label. It is likely one of the generation or utility endpoints offered on the platform.
Payment is handled via the x402 protocol on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The maximum amount required per call is 20,000 base units of USDC, which at 6 decimals equals $0.02 per request. The endpoint accepts HTTP POST requests and returns `application/json`. No API keys or rate limits are advertised — callers simply attach an `X-PAYMENT` header with a valid x402 payment proof.
The platform's landing page lists roughly 16 endpoints across four categories (Data & Analytics, AI & Machine Learning, Finance & Web3, Infrastructure), all priced uniformly at $0.02 per request. Documentation pages (`/docs`, `/pricing`, `/api`, `/README`) returned only a "Connect wallet" prompt with no substantive content, so the actual request/response schemas for this endpoint are unknown.
Capabilities
Use cases
- —Programmatic access to a generation or utility endpoint without API key management
- —Agent-driven workflows that need on-demand paid API calls settled in USDC on Base
- —Testing x402 payment flows against a low-cost live endpoint
Fit
Best for
- —Developers experimenting with x402 pay-per-request protocols
- —AI agents that need keyless, instant-access API endpoints
- —Low-volume or sporadic usage where $0.02/call flat pricing is attractive
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —High-volume production workloads where per-call pricing may add up without volume discounts
- —Anyone who cannot transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/113 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>" \
-d '{}'Endpoint
Quality
The endpoint is live (returns a valid 402 x402 challenge) and pricing is clear ($0.02 USDC on Base), but there is no documentation of what this specific resource does, no request/response schema, and all doc pages return only a wallet-connect prompt. The listing is effectively a stub with confirmed liveness.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README all return only a 'Connect wallet' prompt with no content.
- —The exact functionality of /api/v1/generate/resource/113 ('Premium API Access') is undocumented; the name is generic.
- —No request or response schema is provided; callers must discover behavior empirically.
- —No SLA, rate-limit, or uptime guarantees are documented.
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/generate/resource/113
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/generate/resource/113
- —Platform lists ~16 endpoints all priced at $0.02/request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Documentation pages (/docs, /pricing, /api, /README) contain only a 'Connect wallet' prompthttps://lowpaymentfee.com/docs