Pay-per-call notification endpoint on Base via x402 — $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/notifications/41` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints use the x402 payment protocol, settling in USDC on the Base network. The specific endpoint listed here is described as "Premium API Access" and sits under a notifications path, though no further documentation clarifies what notification data or functionality it provides.
Pricing is $0.02 per request (the x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC, which at 6 decimals equals $0.02). No API keys are required; payment is handled inline via the X-PAYMENT header. The platform advertises no rate limits and instant access. The endpoint accepts POST requests and returns application/json responses.
Because the crawled documentation provides no schema, example payloads, or detailed description for this specific notifications endpoint, the exact request body format and response structure are unknown. The broader platform lists many endpoints at the same $0.02 price point, but individual endpoint documentation is not available from the crawl.
Capabilities
Use cases
- —Sending or retrieving notifications via a pay-per-call API without API key management
- —Agent-driven notification workflows where per-request micropayments replace subscription billing
- —Integrating notification functionality into x402-compatible agent pipelines
Fit
Best for
- —Developers wanting zero-commitment, pay-as-you-go notification access
- —AI agents that can settle x402 payments in USDC on Base
- —Projects needing keyless API access with no rate limits
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —High-volume notification use cases where per-request pricing becomes expensive
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/notifications/41 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, and no description of what the notifications/41 endpoint actually does. This is effectively a stub listing.
Warnings
- —No documentation available for this specific endpoint — the request body format and response schema are completely unknown.
- —The endpoint path suggests a specific notification resource (ID 41) but no context is provided for what this represents.
- —The broader platform pages (/api, /pricing, /README) returned only 'Connect wallet' with no useful content.
- —No OpenAPI spec, no examples, and no robots.txt or agents.txt discovered.
Citations
- —The x402 challenge advertises maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network.https://lowpaymentfee.com/api/v1/notifications/41
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant access.https://lowpaymentfee.com
- —The endpoint is described as 'Premium API Access' and accepts POST requests returning application/json.https://lowpaymentfee.com/api/v1/notifications/41