x402-gated premium API access on Base, pay $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol, settling on the Base network in USDC. The specific endpoint `/api/v1/trades/92` appears to be part of a broader platform offering dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request.
The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is made in USDC (contract 0x8335…2913 on Base) with a max amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The platform advertises no API keys, no rate limits, and instant access — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
However, the specific functionality of `/api/v1/trades/92` is unclear. The endpoint path suggests it may return or process data related to a specific trade (ID 92), but no documentation, request schema, or response schema is available. The broader site lists categories like "Finance & Web3" with price feeds, exchange rates, token quotes, and gas estimates, so this trade endpoint likely falls within that financial data domain. The docs, pricing, and API pages all render only a "Connect wallet" prompt with no further content, so detailed documentation is absent.
Capabilities
Use cases
- —Fetching trade-related data on a per-request payment basis without needing an API key
- —Integrating low-cost financial data into agent workflows using x402 micropayments
- —Programmatic access to trade information settled in USDC on Base
Fit
Best for
- —AI agents needing keyless, pay-per-call access to financial data
- —Developers experimenting with x402 payment protocol integrations
- —Low-volume consumers who want no subscription or commitment
Not for
- —Users needing detailed API documentation or guaranteed SLAs
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone requiring non-financial/non-trade data from this specific endpoint
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/trades/92 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_proof>"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge 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/92 is only inferrable from the URL path.
Warnings
- —No documentation available — docs, pricing, and API pages all render only 'Connect wallet' with no content.
- —The specific functionality of /api/v1/trades/92 is unknown; no request or response schema is provided.
- —The endpoint path references a hardcoded trade ID (92), which may indicate a single-resource endpoint rather than a general-purpose API.
- —No OpenAPI spec, ai-plugin manifest, or agents.txt discovered.
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/trades/92
- —The platform advertises $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/92
- —The site lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com