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/12` is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol APIs spanning data & analytics, AI/ML, 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 `/api/v1/trades/12` resource is listed under "Premium API Access" but its exact data payload is not documented in the available crawl material. The site groups its endpoints into categories including trade/finance data, AI inference, and utility services. Based on the URL pattern (`/trades/12`), this likely returns trade-related data for a specific resource identified by ID 12, but the response schema is not published.
Pricing is $0.02 per request (the x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC, which has 6 decimals, equaling $0.02). Payment is made inline via the x402 `exact` scheme on the Base L2 network to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`. The endpoint accepts POST requests and returns `application/json`. No OpenAPI spec or detailed documentation was found beyond the landing page overview.
Capabilities
Use cases
- —Fetching trade-related data on demand without subscription or API key management
- —Integrating pay-per-call financial data into autonomous agent workflows
- —Demonstrating x402 protocol micropayments on Base network
Fit
Best for
- —Agents or apps that need on-demand trade data with no signup
- —Developers experimenting with x402 micropayment protocol
- —Low-volume consumers who prefer pay-per-use over subscriptions
Not for
- —High-volume consumers needing bulk/batch trade data at discounted rates
- —Users who need detailed API documentation or guaranteed SLAs
- —Anyone without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/trades/12 \
-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 OpenAPI spec, no response schema, no documentation of what /api/v1/trades/12 actually returns, and the docs/pricing/README pages are all blank beyond a 'Connect wallet' prompt. The listing is essentially a stub with confirmed liveness.
Warnings
- —No OpenAPI or response schema available — the actual data returned by /api/v1/trades/12 is unknown
- —Documentation pages (/docs, /pricing, /README) are empty or require wallet connection to view
- —The specific meaning of 'trades/12' (trade ID? category?) is undocumented
- —No examples of request body or response body found in crawl material
Citations
- —Endpoint returns 402 with x402 challenge advertising USDC on Base network at maxAmountRequired 20000 base unitshttps://lowpaymentfee.com/api/v1/trades/12
- —Site advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 with 6 decimalshttps://lowpaymentfee.com/api/v1/trades/12