Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.
What it does
This endpoint at `/api/v1/item/6` is part of the lowpaymentfee.com platform, which offers a suite of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are gated via the x402 protocol, settling payments in USDC on the Base network. The listed price is $0.02 per request (20,000 base units of USDC with 6 decimals), with no API keys, no rate limits, and no minimum commitments required.
The specific resource at `/api/v1/item/6` is labeled "Premium API Access" but lacks detailed documentation about what data or functionality it returns. The crawled docs, pricing, and README pages all rendered only a wallet-connect prompt with no additional technical content. The platform advertises 16+ endpoints across categories including metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and generation — all at the same $0.02 price point.
The x402 challenge was successfully captured, confirming the endpoint is live. It accepts POST requests, returns `application/json`, and settles via the "exact" scheme on Base using USDC (contract `0x8335…2913`). However, there is no OpenAPI schema, no request/response examples, and no substantive documentation beyond the landing page listing. The actual behavior of `/api/v1/item/6` specifically is unclear — it may be a generic or demo endpoint rather than a distinct service.
Capabilities
Use cases
- —Accessing premium API data without subscription or API key management
- —Testing x402 payment flows with low-cost per-request pricing
- —Integrating pay-per-use API calls into agent workflows on Base
Fit
Best for
- —Developers exploring x402 protocol integrations
- —Agents needing keyless, pay-per-call API access
- —Low-volume or sporadic API consumers who want no commitments
Not for
- —Users needing detailed API documentation or guaranteed SLAs
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone requiring non-USDC or non-Base payment settlement
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/item/6 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and the x402 challenge is well-formed with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and no documentation explaining what /api/v1/item/6 actually does. The docs/pricing/README pages all resolve to a bare wallet-connect prompt. This is effectively a stub listing.
Warnings
- —No documentation available — docs, pricing, and README pages only show a wallet-connect prompt
- —The specific functionality of /api/v1/item/6 ('Premium API Access') is not described anywhere
- —No OpenAPI schema or request/response examples provided
- —The platform lists many endpoints but none have detailed technical docs in the crawl
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/item/6
- —All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The platform offers 16+ endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com
- —USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/item/6