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/106` appears to be part of a broader platform offering dozens of pay-per-call endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request in USDC.
The endpoint accepts POST requests and returns JSON. Payment is settled on-chain via USDC (contract 0x8335…2913) on Base, using the x402 "exact" scheme. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02. There are no API keys, no rate limits, and no upfront commitments — callers simply attach an X-PAYMENT header to each request.
The specific functionality behind `/api/v1/trades/106` is not documented in the crawled material. The path suggests it may return data about a particular trade (ID 106), but this is speculative. The broader platform lists endpoints for metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation. Documentation pages (/docs, /pricing, /README) returned only a "Connect wallet" prompt with no substantive content.
Capabilities
Use cases
- —Fetching trade data on a per-request payment basis without needing an API key
- —Integrating low-cost paid API calls into autonomous agent workflows on Base
- —Accessing premium data endpoints with on-chain USDC micropayments
Fit
Best for
- —Agents or bots that need keyless, pay-as-you-go API access
- —Developers experimenting with x402 payment protocol integrations
- —Use cases requiring very low per-call costs ($0.02) settled in USDC on Base
Not for
- —Users who need detailed API documentation or schemas before integrating
- —High-volume consumers who prefer subscription-based pricing over per-call payments
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/trades/106 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base). However, there is no documentation for this specific endpoint's request/response schema, no examples, and the docs/pricing/README pages are empty. The purpose of /api/v1/trades/106 is unclear — effectively a stub listing.
Warnings
- —No documentation available for /api/v1/trades/106 — purpose and expected request/response format are unknown
- —All documentation pages (/docs, /pricing, /README) returned only 'Connect wallet' with no content
- —The specific trade resource (ID 106) is not listed among the platform's advertised endpoints, so its function is speculative
- —No OpenAPI spec or output schema beyond basic HTTP method info
Citations
- —The endpoint returns a 402 challenge with x402Version 1, exact scheme, on Base network, requiring 20000 base units of USDChttps://lowpaymentfee.com/api/v1/trades/106
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/trades/106
- —Platform advertises $0.02 per request, no API keys, no rate limits, instant access, Base networkhttps://lowpaymentfee.com
- —Platform lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com