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/42` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints use the x402 protocol for payment, settling in USDC on the Base network at $0.02 per request with no API keys, rate limits, or subscriptions required.
The specific endpoint probed (`/api/v1/trades/42`) is labeled "Premium API Access" and accepts POST requests. It returns JSON responses. The x402 challenge confirms it is live and requires a maximum of 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) paid to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The payment timeout is 300 seconds.
Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no examples of what data this particular trades endpoint returns. The endpoint appears to be a trade data resource (given the `/trades/42` path), but the exact payload structure is unknown.
Capabilities
Use cases
- —Fetching trade data without subscription commitments
- —Programmatic access to trade information with per-call USDC payment
- —Agent-driven data retrieval with x402 payment protocol
Fit
Best for
- —Developers wanting zero-commitment pay-per-use trade data
- —AI agents that can settle x402 payments on Base
- —Users who prefer no API key or account registration
Not for
- —Users needing detailed API documentation or schemas before integrating
- —High-volume consumers who would benefit from bulk pricing
- —Anyone without USDC on Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/trades/42 \
-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, no OpenAPI spec, no request/response schema, and no examples. The purpose of the /trades/42 endpoint is unclear beyond its label.
Warnings
- —No API documentation available — docs/pricing/README pages only show 'Connect wallet'
- —No OpenAPI or schema describing request parameters or response format
- —The specific data returned by /api/v1/trades/42 is undocumented and unclear
- —No examples or sample responses available
Citations
- —Endpoint returns 402 with x402 challenge requiring 20000 base units USDC on Basehttps://lowpaymentfee.com/api/v1/trades/42
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/trades/42