Pay-per-call API suite on Base via x402 — data, AI, finance, and utility endpoints at $0.02/request.
What it does
lowpaymentfee.com offers a collection of pay-per-request API endpoints settled via the x402 protocol on the Base network using USDC. The specific endpoint at `/api/v1/generate/resource/64` is listed as "Premium API Access" and accepts POST requests. The x402 challenge advertises a max amount of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per call given USDC's 6 decimals.
The provider's landing page advertises four categories of APIs: 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/Utility (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.
Documentation is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/generate/resource/64` endpoint actually returns. The endpoint is live (returns a valid 402 challenge), but without documentation it is unclear what payload to send or what response to expect.
Capabilities
Use cases
- —Programmatic access to utility/generation endpoints without API key management
- —Agent-driven pay-per-call workflows settled in USDC on Base
- —Low-friction API consumption where traditional billing is undesirable
Fit
Best for
- —Developers or agents wanting keyless, pay-per-use API access
- —x402-compatible agent wallets on the Base network
- —Low-volume or sporadic API consumers who prefer per-call billing
Not for
- —Users needing detailed API documentation or guaranteed SLAs
- —High-volume consumers who need bulk pricing or rate-limit guarantees
- —Anyone without a Base-network USDC wallet or x402-compatible client
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/64 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>" \
-d '{}'Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming pricing and network. However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet-connect prompt. It is impossible to determine what this specific endpoint does or what inputs it expects without further information.
Warnings
- —No documentation available — /docs, /api, /pricing, and /README pages are all empty (wallet-connect only)
- —No OpenAPI or schema describing request body or response format for /api/v1/generate/resource/64
- —The purpose of 'Premium API Access' at this specific resource path is entirely unclear
- —Cannot verify what data or functionality is actually returned by this endpoint
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/generate/resource/64
- —All endpoints are listed at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The provider advertises four categories: Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructurehttps://lowpaymentfee.com
- —Documentation pages (/docs, /api, /pricing, /README) render only a 'Connect wallet' prompthttps://lowpaymentfee.com/docs