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 on the Base network. The specific resource path `/api/v1/trades/160` suggests a trade-data or financial-trade endpoint, though the provider's site does not document this particular path in its public listings. The site advertises a broad catalog of APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and instant access.
The x402 challenge confirms the endpoint is live and accepts payment via the "exact" scheme in USDC (contract 0x8335…2913) on Base. The maxAmountRequired is 20000 base units, which at 6 decimals equals $0.02 — consistent with the site's advertised flat pricing. Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. The endpoint accepts HTTP POST and returns application/json.
Note that the specific `/api/v1/trades/160` path is not listed among the publicly documented endpoints on the provider's homepage. It may be a trade-specific resource (e.g., returning details for trade ID 160) or part of an undocumented trades API. Without further documentation or example responses, the exact data returned is unknown. The docs, pricing, and README pages behind the site all appear to require a wallet connection and provide no additional technical detail.
Capabilities
Use cases
- —Fetching trade-specific data on demand with per-request USDC micropayments
- —Integrating pay-per-call financial data into agent workflows without API key management
- —Accessing premium trade information via x402 protocol from Base network wallets
Fit
Best for
- —Agents or apps that need on-demand trade data without subscription commitments
- —Developers building on Base who want frictionless pay-per-request APIs
- —Low-volume consumers who prefer micropayments over monthly plans
Not for
- —Users who need detailed API documentation or example schemas before integrating
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone without a Base-compatible wallet or USDC balance
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/trades/160 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but the specific /api/v1/trades/160 path is undocumented. No request/response schema, no examples, and the site's docs pages are empty behind a wallet-connect gate. Effectively a stub listing.
Warnings
- —The /api/v1/trades/160 path is not listed among the provider's publicly documented endpoints — its exact purpose and response format are unknown.
- —All documentation pages (docs, pricing, README, api) require wallet connection and contain no visible technical content.
- —No OpenAPI spec, request schema, or response examples are available.
Citations
- —The site advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —The x402 challenge shows maxAmountRequired of 20000 base units in USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equaling $0.02.https://lowpaymentfee.com/api/v1/trades/160
- —The provider lists APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories.https://lowpaymentfee.com