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/resource/23` is labeled "Premium API Access" and charges up to $0.02 per call (20,000 base units of USDC with 6 decimals). No API keys, rate limits, or upfront commitments are required — callers simply attach an x402 payment header to each request.
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 listed endpoints share the same $0.02 per-request pricing.
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 spec, no request/response schema documentation, and no usage examples available from the crawled material. The specific functionality behind `/api/resource/23` ("Premium API Access") is not described beyond its title, so its actual behavior is unknown.
Capabilities
Use cases
- —Agents needing on-demand API access without pre-registration or API keys
- —Programmatic access to analytics, AI inference, or financial data with per-call USDC payments
- —Lightweight utility calls (geocoding, validation, conversion) settled instantly on Base
Fit
Best for
- —AI agents or bots that need keyless, pay-as-you-go API access
- —Developers experimenting with x402 payment protocol integrations
- —Low-volume consumers who want no subscription commitments
Not for
- —High-volume production workloads needing SLAs or guaranteed uptime documentation
- —Users who need detailed API documentation, schemas, or example payloads before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/resource/23 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and the specific function of /api/resource/23 is undescribed. Effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — actual request/response format for /api/resource/23 is unknown
- —All documentation pages (docs, API, pricing, README) return only 'Connect wallet' with no technical content
- —The specific functionality of /api/resource/23 ('Premium API Access') is not described anywhere in the crawled material
- —No examples, error codes, or rate limit information documented
Citations
- —Platform charges $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —x402 challenge returns maxAmountRequired of 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equaling $0.02https://lowpaymentfee.com/api/resource/23
- —Platform offers Data & Analytics, AI & ML, Finance & Web3, and Infrastructure API categorieshttps://lowpaymentfee.com