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/v1/generate/resource/92` is listed as "Premium API Access" and costs up to $0.02 per call (20,000 base units of USDC with 6 decimals). No API keys or rate limits are advertised; callers pay per request via the x402 payment protocol.
The platform 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 utilities (geocoding, validation, conversion, generation). All endpoints are listed at the same $0.02/request price point.
Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no detailed documentation for any endpoint. The specific functionality behind `/api/v1/generate/resource/92` (labeled "Premium API Access") is unclear and cannot be determined from the available material.
Capabilities
Use cases
- —Accessing data analytics and metrics via micropayments without API key management
- —Running AI inference tasks (sentiment, summarization, classification, embeddings) on a per-call basis
- —Fetching financial data such as token prices, exchange rates, and gas estimates
- —Using utility services like geocoding, validation, and data conversion
Fit
Best for
- —Developers wanting zero-commitment, pay-as-you-go API access
- —Agents and bots that can settle payments in USDC on Base via x402
- —Users who prefer no API key registration or rate limit constraints
Not for
- —Users needing detailed API documentation or guaranteed SLAs
- —Applications requiring high-throughput with predictable bulk pricing
- —Users who cannot transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/92 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Endpoint
Quality
The endpoint is live (returns a valid 402 x402 challenge) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and documentation pages are empty beyond a wallet connect prompt. The specific purpose of resource/92 is unknown. This is effectively a stub listing.
Warnings
- —Documentation pages (/docs, /api, /pricing, /README) all return only a 'Connect wallet' prompt with no usable content.
- —The specific functionality of /api/v1/generate/resource/92 ('Premium API Access') is undocumented and unclear.
- —No OpenAPI schema or request/response examples are available for any endpoint.
- —Cannot verify that the advertised AI, finance, and data endpoints actually function as described.
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/generate/resource/92
- —All 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 APIs in four categories: Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructurehttps://lowpaymentfee.com
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/generate/resource/92