Pay-per-call premium API access on Base network via x402 protocol at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific path `/api/v1/trades/14` suggests a trades-related data endpoint, though the exact response payload is not documented. The provider operates a broader platform offering Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utility APIs, all priced at $0.02 per request settled in USDC on the Base network.
The endpoint accepts POST requests and requires an X-PAYMENT header conforming to x402 version 1. Payment is settled in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). There are no API keys, no rate limits, and no subscription commitments — each call is independently paid.
Documentation is extremely sparse. The crawled docs, pricing, and README pages all render only a "Connect wallet" prompt with no additional technical detail. The output schema and response format for this specific trades endpoint are not documented anywhere in the available material.
Capabilities
Use cases
- —Fetching trade data on a per-request payment basis without API key management
- —Integrating pay-as-you-go financial data into autonomous agents
- —Accessing premium trade information settled via on-chain USDC on Base
Fit
Best for
- —Agents needing keyless, on-demand trade data access
- —Developers who prefer per-call crypto micropayments over subscriptions
- —x402-compatible clients on the Base network
Not for
- —Users who need detailed API documentation or response schemas before integrating
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Users without USDC on Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/trades/14 \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation of request parameters, response schema, or what 'trades/14' actually returns. Docs pages are empty beyond a wallet connect prompt.
Warnings
- —No documentation available for this specific endpoint's request or response format
- —The meaning of '/trades/14' (trade ID? category?) is unclear
- —All docs/pricing/README pages render only 'Connect wallet' with no technical content
- —Output schema and example responses are entirely undocumented
Citations
- —Endpoint returns 402 with x402 version 1 challenge requiring USDC payment on Basehttps://lowpaymentfee.com/api/v1/trades/14
- —maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02https://lowpaymentfee.com/api/v1/trades/14
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/trades/14