Check order status via x402 micropayment on Base network for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns the status of order #159 via a POST request, gated by an x402 payment challenge. It is part of a broader platform that offers a variety of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all priced at $0.02 per request and settled in USDC on the Base network.
The specific endpoint `/api/v1/orders/159/status` is labeled "Premium API Access" in the x402 challenge. The payment scheme is "exact" with a maxAmountRequired of 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, which has 6 decimals), equating to $0.02 per call. Payment is made via the X-PAYMENT header using the x402 protocol (version 1). No API keys, rate limits, or subscriptions are required — callers simply attach a valid payment proof to each request.
The platform's landing page advertises additional endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, and more, all at the same $0.02 price point. However, the crawled documentation pages (docs, pricing, README) returned only a "Connect wallet" prompt with no further technical detail, so the exact request/response schemas for this order-status endpoint are unknown.
Capabilities
Use cases
- —Checking the status of a specific order programmatically with per-call payment
- —Integrating pay-per-use order tracking into agent workflows
- —Demonstrating x402 protocol micropayments on Base network
Fit
Best for
- —Agents or services that need on-demand order status checks without subscriptions
- —Developers experimenting with x402 payment-gated APIs
- —Low-volume callers who prefer pay-per-request over monthly plans
Not for
- —High-volume order management systems where per-call fees add up quickly
- —Users who need detailed API documentation and response schemas before integrating
- —Querying orders other than order #159 (endpoint is hardcoded to a single order ID)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/orders/159/status \
-H "X-PAYMENT: <x402-payment-proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response examples, and documentation pages are empty stubs. The endpoint is also scoped to a single hardcoded order ID, limiting general utility.
Warnings
- —Documentation pages (/docs, /pricing, /README) return no useful content beyond 'Connect wallet'
- —No request body schema or response schema available — callers must guess at the payload format
- —Endpoint is hardcoded to order ID 159; unclear if other order IDs are supported via different URLs
- —The platform lists many other endpoints on its landing page but none have documented schemas
Citations
- —The x402 challenge returns maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network, equating to $0.02https://lowpaymentfee.com/api/v1/orders/159/status
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —Additional endpoints are listed for analytics, AI/ML, finance, and utility services all at $0.02https://lowpaymentfee.com