Pay-per-call trade data endpoint on Base via x402, settled in USDC at $0.02/request.
What it does
This endpoint at `/api/v1/trades/40` is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints use the x402 payment protocol on the Base network, accepting USDC (USD Coin) for per-request micropayments with no API keys, no rate limits, and no commitments required.
The specific endpoint `/api/v1/trades/40` is labeled "Premium API Access" in the x402 challenge. Based on the URL path (`/trades/40`), it likely returns trade-related data for a specific resource identified by ID 40, though the exact response schema is not documented. The endpoint accepts POST requests and returns `application/json`. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 per request — consistent with the platform's uniform pricing of $0.02/request across all endpoints.
The platform advertises no API keys, no rate limits, and instant access. Payment is handled entirely through the x402 `X-PAYMENT` header. The payment is settled on the Base L2 network to the address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`, with a maximum timeout of 300 seconds. Documentation beyond the landing page is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional content.
Capabilities
Use cases
- —Fetching trade data for a specific resource on demand with per-call USDC payment
- —Integrating pay-per-use trade information into agent workflows without managing API keys
- —Programmatic access to trade records settled via x402 on Base
Fit
Best for
- —Agents or bots that need on-demand trade data without subscription commitments
- —Developers experimenting with x402 micropayment protocol integrations
- —Low-volume consumers who prefer pay-per-call over monthly plans
Not for
- —High-volume consumers needing bulk trade data at discounted rates
- —Users who need detailed API documentation or response schema guarantees before integrating
- —Anyone without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/trades/40 \
-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/request in USDC on Base). However, there is no OpenAPI schema, no documented request/response format, no examples, and the docs/pricing/README pages are all empty beyond a wallet connect prompt. The purpose of `/api/v1/trades/40` is only inferable from the URL path; no description of what trade data is returned exists.
Warnings
- —No API documentation available — docs, pricing, and README pages all show only 'Connect wallet' with no content
- —No request or response schema documented for this endpoint
- —The exact nature of the data returned by /api/v1/trades/40 is unknown — 'Premium API Access' is a generic label
- —This specific endpoint path (/api/v1/trades/40) is not listed on the landing page among the advertised APIs
Citations
- —The endpoint returns a 402 challenge with x402Version 1, requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/trades/40
- —maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02 per requesthttps://lowpaymentfee.com/api/v1/trades/40
- —Platform advertises $0.02/request uniform pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Payment address is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with maxTimeoutSeconds of 300https://lowpaymentfee.com/api/v1/trades/40
- —Docs, pricing, and README pages render only 'Connect wallet' with no additional documentationhttps://lowpaymentfee.com/docs