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 a collection of pay-per-call APIs gated via the x402 protocol on the Base network. The specific endpoint `/api/v1/trades/86` is listed as "Premium API Access" and accepts POST requests. Payment is settled in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, with a maximum amount of 20,000 base units — which, at 6 decimals for USDC, equals $0.02 per request.
The broader lowpaymentfee.com platform advertises multiple API categories including Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments.
However, the specific `/api/v1/trades/86` endpoint does not appear in the site's publicly listed API catalog, and no documentation, request schema, or response schema is available for it. The docs, pricing, and README pages all render only a "Connect wallet" prompt with no further content. Without knowing what data or functionality this particular trades endpoint returns, consumers should treat this as an opaque premium endpoint with uncertain output.
Capabilities
Use cases
- —Accessing trade-related data or executing trade queries via a single paid API call
- —Integrating pay-per-use endpoints into agent workflows without managing API keys
- —Programmatic access to premium data behind x402 micropayment gating
Fit
Best for
- —Developers wanting keyless, pay-per-call API access settled in USDC on Base
- —AI agents that can handle x402 payment challenges natively
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —Anyone without a Base-compatible USDC wallet
- —High-volume consumers who would benefit from bulk pricing or subscriptions
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/trades/86 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming it accepts USDC payments on Base at $0.02/request. However, the specific /api/v1/trades/86 path is not documented anywhere on the site, there is no request or response schema, and the docs/pricing/README pages are empty beyond a wallet connect prompt. The actual functionality of this endpoint is unknown.
Warnings
- —The /api/v1/trades/86 endpoint is not listed in the site's public API catalog — its purpose and output are unknown.
- —No request body schema or response schema is documented anywhere.
- —The docs, pricing, and README pages contain no usable content beyond 'Connect wallet'.
- —Without knowing what this endpoint returns, consumers cannot verify its utility before paying.
Citations
- —The endpoint returns a 402 x402 challenge requesting USDC payment on Base with maxAmountRequired of 20000 base units ($0.02).https://lowpaymentfee.com/api/v1/trades/86
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/trades/86
- —The site advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —The site lists API categories including Data & Analytics, AI & ML, Finance & Web3, and Infrastructure, but /api/v1/trades/86 is not among them.https://lowpaymentfee.com