x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys, no rate limits.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource `/api/v1/trades/117` appears to be part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities. All endpoints on the platform are priced at $0.02 per request, settled in USDC on the Base network.
The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is made via the `exact` scheme to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on Base. The `maxAmountRequired` is 20000 base units, which equals $0.02 (USDC has 6 decimals). The timeout is 300 seconds. No API keys or rate limits are required — access is purely payment-gated.
However, the specific functionality of `/api/v1/trades/117` is unclear. The endpoint path suggests trade-related data (possibly a specific trade record or trade execution endpoint), but it does not appear in the site's publicly listed API catalog, and no documentation, request schema, or response schema is available for this particular route. The docs, pricing, and README pages all returned only a "Connect wallet" prompt with no substantive content. Without knowing the expected input or output format, callers will need to experiment or contact the provider.
Capabilities
Use cases
- —Retrieving trade-related data or executing trade queries via a single paid API call
- —Agent-driven workflows that need on-demand financial or trade data without subscription overhead
- —Programmatic access to trade information settled instantly in USDC on Base
Fit
Best for
- —Agents or developers who want keyless, pay-per-call API access
- —Users already holding USDC on Base who want frictionless micropayments
- —Exploratory or low-volume use cases where $0.02/request is cost-effective
Not for
- —Users who need detailed documentation or guaranteed response schemas before integrating
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone without a Base-compatible wallet or USDC holdings
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/trades/117 \
-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, the specific endpoint /api/v1/trades/117 has no documentation, no request/response schema, and is not listed in the site's public API catalog. Docs pages returned only 'Connect wallet' with no content. This is effectively a stub listing.
Warnings
- —The endpoint /api/v1/trades/117 is not listed in the provider's public API catalog — its purpose and expected input/output are unknown.
- —No documentation, OpenAPI spec, or response schema is available for this endpoint.
- —All docs/pricing/README pages returned only a 'Connect wallet' prompt with no substantive content.
- —The numbered path segment (117) suggests this may reference a specific resource ID, but its meaning is undocumented.
Citations
- —The platform lists APIs at $0.02/request with no API keys, no rate limits, on Base networkhttps://lowpaymentfee.com
- —x402 challenge confirms endpoint is live, accepting POST, with maxAmountRequired of 20000 base units USDC on Basehttps://lowpaymentfee.com/api/v1/trades/117
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/trades/117