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 resource `/api/v1/trades/132` 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 priced at $0.02 per request in USDC.
The endpoint is live and returns a standard x402 challenge (HTTP 402) requiring an `X-PAYMENT` header with an exact-scheme payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02. Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. The response MIME type is `application/json` and the input method is HTTP POST.
However, the specific functionality of `/api/v1/trades/132` is unclear. The endpoint path suggests it may return data about a particular trade (ID 132), but it is not listed among the documented API categories on the landing page (Data & Analytics, AI & ML, Finance & Web3, Infrastructure). No request body schema, response schema, or detailed documentation is available — the docs, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. Without knowing what this endpoint actually returns or what input it expects, callers will need to experiment or contact the provider.
Capabilities
Use cases
- —Fetching trade data for a specific trade ID via a single paid API call
- —Integrating pay-per-request data access into autonomous agents on Base
- —Accessing premium API resources without managing API keys or subscriptions
Fit
Best for
- —Agents or developers who want keyless, pay-per-call API access settled in USDC on Base
- —Low-volume or sporadic API consumers who prefer no subscriptions
- —x402-compatible clients that can construct payment headers automatically
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —High-volume consumers who would benefit from bulk pricing or rate-limited plans
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/trades/132 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and the x402 challenge is well-formed with clear pricing ($0.02 USDC on Base). However, there is no documentation for this specific endpoint, no request/response schema, and the docs pages are empty. The purpose of /api/v1/trades/132 is not explained anywhere in the crawled material, making this effectively a stub listing.
Warnings
- —The specific endpoint /api/v1/trades/132 is not listed among the documented APIs on the landing page — its purpose and expected input/output are unknown.
- —All documentation pages (docs, pricing, README, api) render only a 'Connect wallet' prompt with no substantive content.
- —No request body schema or response schema is available; callers must experiment to discover the API contract.
Citations
- —The endpoint returns a 402 challenge requiring 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base networkhttps://lowpaymentfee.com/api/v1/trades/132
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on the Base networkhttps://lowpaymentfee.com
- —The platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com