Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource `/api/v1/accounts/16` is one of many endpoints offered by the platform, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, settled in USDC on the Base network with no API keys, rate limits, or commitments required.
The x402 challenge confirms the endpoint is live, accepting POST requests and requiring payment of up to 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) to wallet address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3. The payment scheme is "exact" on the Base network with a 300-second timeout. The endpoint returns application/json responses.
However, the specific functionality of `/api/v1/accounts/16` is unclear. The provider's landing page lists many API categories but does not include an "accounts" endpoint in its public catalog. No OpenAPI schema, detailed documentation, or example request/response payloads are available — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no substantive content. The actual behavior of this particular endpoint remains unknown beyond its x402 payment parameters.
Capabilities
Use cases
- —Accessing premium API data with per-request USDC micropayments on Base
- —Agent-driven API consumption without pre-registration or API keys
- —Programmatic pay-as-you-go access to various utility and data endpoints
Fit
Best for
- —Developers wanting keyless, pay-per-call API access
- —AI agents with x402-compatible payment capabilities
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Users needing detailed API documentation or guaranteed SLAs
- —Applications requiring free or fiat-only payment methods
- —Use cases needing high-volume bulk pricing
Quick start
# The endpoint requires an x402 payment header (USDC on Base, $0.02/call)
curl -X POST https://lowpaymentfee.com/api/v1/accounts/16 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but the specific endpoint /api/v1/accounts/16 is not documented anywhere on the site, no OpenAPI schema exists, docs pages are empty, and no example request/response data is available. The actual functionality of this endpoint is unknown.
Warnings
- —The endpoint /api/v1/accounts/16 is not listed in the provider's public API catalog — its specific functionality is undocumented.
- —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no substantive content.
- —No OpenAPI schema, example requests, or example responses are available.
- —The actual data returned by this endpoint is unknown; use with caution.
Citations
- —All endpoints priced at $0.02 per request with no API keys, rate limits, or minimumshttps://lowpaymentfee.com
- —Platform offers APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com
- —x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/accounts/16
- —Payment settles to 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with 300-second timeouthttps://lowpaymentfee.com/api/v1/accounts/16