x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol on the Base network. The specific endpoint `/api/v1/trades/41` appears to be part of a broader suite of pay-per-call APIs offered by the provider, spanning categories like data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform are priced at $0.02 per request, settled in USDC on Base.
The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is made via the `exact` scheme to the specified wallet address, with the asset being USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base). The maxAmountRequired of 20000 base units equals $0.02 (USDC uses 6 decimals). The response MIME type is `application/json`. No API keys, rate limits, or commitments are required — callers simply attach an x402 payment header to each request.
The specific functionality of `/api/v1/trades/41` is not documented in the crawled material. The endpoint path suggests it may return data about a specific trade (ID 41), possibly in a finance or trading context, but this is speculative. The provider's landing page lists many endpoints but does not include this specific path among them. Documentation pages (`/docs`, `/pricing`, `/README`) returned only a "Connect wallet" prompt with no substantive content.
Capabilities
Use cases
- —Fetching trade data on a per-request payment basis without needing an API key
- —Integrating pay-per-call endpoints into autonomous agent workflows via x402
- —Accessing premium data feeds settled in USDC on Base L2
Fit
Best for
- —Agents or applications that need keyless, pay-as-you-go API access
- —Developers who prefer crypto micropayments over subscription billing
- —x402-compatible clients on the Base network
Not for
- —Users who need detailed documentation or OpenAPI schemas before integrating
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/trades/41 \
-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). However, there is no documentation for this specific endpoint, no request/response schema, no examples, and the docs pages are empty. The exact purpose of /api/v1/trades/41 is unknown.
Warnings
- —The specific endpoint /api/v1/trades/41 is not listed among the provider's documented APIs on the landing page
- —All documentation pages (/docs, /pricing, /README) returned only a 'Connect wallet' prompt with no useful content
- —No request body schema or response schema is available — the endpoint's exact functionality is unclear
- —The endpoint path suggests trade-specific data but this is unconfirmed
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/trades/41
- —All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/trades/41