Pay-per-call premium API access on Base network via x402, $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol on the Base network. The specific path `/api/v1/trades/28` appears to be one of many endpoints offered by this provider, though its exact functionality (likely related to trade data retrieval) is not explicitly documented beyond the generic "Premium API Access" label.
The provider operates a broad catalog of pay-per-request APIs spanning data & analytics, AI/ML inference, finance & Web3, and infrastructure utilities—all priced at $0.02 per request. Payment is settled in USDC (USD Coin) on the Base L2 network. The x402 challenge confirms the endpoint is live and accepts POST requests with a maximum payment of 20,000 base units of USDC (6 decimals), which equals $0.02.
No API keys or rate limits are advertised. Access is instant upon payment. However, documentation is extremely sparse—the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. The specific input/output schema for this trades endpoint is not documented, making it difficult to know what request body to send or what response to expect.
Capabilities
Use cases
- —Retrieving trade data without subscription commitments
- —Programmatic access to financial trade information with per-call billing
- —Agent-driven data fetching with automatic crypto micropayments
Fit
Best for
- —Developers wanting zero-commitment API access paid in USDC
- —AI agents that can settle x402 payments autonomously
- —Users who need occasional trade data without managing API keys
Not for
- —High-volume consumers needing bulk pricing or batched requests
- —Users without USDC on Base network
- —Anyone requiring detailed API documentation before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/trades/28 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation of input/output schemas, no examples, and the specific purpose of /api/v1/trades/28 is undocumented. Docs pages are empty beyond a wallet connect prompt.
Warnings
- —No documentation available for this specific endpoint's request/response format
- —All doc/pricing/API pages render only 'Connect wallet' with no content
- —The exact purpose of /api/v1/trades/28 is unclear—'Premium API Access' is a generic label
- —Cannot verify what data is returned without making a paid request
Citations
- —Endpoint returns 402 with x402 challenge accepting USDC on Base network at 20000 base units ($0.02)https://lowpaymentfee.com/api/v1/trades/28
- —Provider advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/trades/28