Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.
What it does
This endpoint at `/api/v1/item/7` is part of lowpaymentfee.com, a platform offering a broad suite of pay-per-request APIs settled via the x402 protocol on the Base network using USDC. The specific endpoint is labeled "Premium API Access" but its exact functionality is not documented beyond that generic title. The site hosts endpoints across four categories: 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 (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request.
The x402 challenge confirms the endpoint is live, accepting POST requests and requiring payment of up to 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals = $0.02) per call. Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. No API keys or rate limits are advertised; access is gated purely by the x402 payment header. The response MIME type is application/json.
Documentation is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further content. The specific behavior of `/api/v1/item/7` (what data it returns, what input it expects) is unknown from available materials. It does not appear in the site's listed endpoint catalog, so it may be a test or unlisted route.
Capabilities
Use cases
- —Programmatic access to premium data or services without subscription or API key management
- —Agent-driven workflows that need on-demand, pay-as-you-go API calls settled in USDC on Base
- —Testing x402 payment flows against a live, low-cost endpoint
Fit
Best for
- —Developers exploring x402 protocol integration
- —AI agents needing keyless, per-call API access
- —Low-volume or sporadic API consumers who want no commitments
Not for
- —Users who need detailed documentation or guaranteed SLAs before integrating
- —High-volume consumers seeking bulk pricing or subscription discounts
- —Anyone requiring non-crypto payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/item/7 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge with clear pricing ($0.02 USDC on Base), but there is essentially no documentation on what /api/v1/item/7 actually does, no request/response schema, and no examples. The docs pages are empty. The endpoint doesn't appear in the site's own catalog, making it effectively a stub listing.
Warnings
- —The specific functionality of /api/v1/item/7 is undocumented — 'Premium API Access' is a generic label with no detail on inputs or outputs.
- —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no usable content.
- —This endpoint path does not appear in the site's own listed API catalog, suggesting it may be a test or unlisted route.
- —No request or response schema is available; integration requires trial-and-error.
Citations
- —The endpoint returns a 402 challenge requiring USDC payment of up to 20,000 base units ($0.02) on Base network.https://lowpaymentfee.com/api/v1/item/7
- —The site advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/item/7
- —Documentation, pricing, API, and README pages all show only 'Connect wallet' with no further content.https://lowpaymentfee.com/docs