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HALOWERK Price Target Crossing Monitor
x402
HALOWERK Price Target Crossing Monitor is a paid API for AI agents from handel.halowerk.com, paid per call via x402, $0.007/call, status unknown (last checked 2026-10-22).
Monitors a product or asset URL and triggers a callback when its price crosses a specified target threshold, compared to a previous price value.
Price / call$0.007
Success—
StatusUnknown
How this service works
HALOWERK handelswerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.
Output
A JSON response indicating whether the price at the given URL has crossed the specified target threshold relative to the previous price, along with relevant price data and crossing status details. If a callback URL was provided, the service also posts a notification to that endpoint upon crossing detection.
Example use cases
E-commerce deal alert webhook
“Set up a price watch on https://shop.example.com/item/headphones — the current price is $199.00 USD and I want my webhook at https://myserver.com/alerts triggered the moment it crosses below $149.00. Use idempotency key headphones-watch-20240601-xk9qrst2uvwxyz01.”
Crypto or asset floor crossing
“Monitor this asset listing at https://market.example.com/asset/ETH for me — it was previously at $3500.00 USD and I need a callback to https://myapp.com/price-hook when it crosses below $3000.00. My idempotency key is eth-floor-alert-abcdef1234567890abcd1234.”
Competitor pricing threshold trigger
“Keep an eye on this competitor product URL https://rival.com/products/widget — previous price was $25.00 USD — and ping my endpoint https://internal.myco.com/repricing-hook when it drops under $18.00 so I can reprice automatically. Idempotency key: competitor-widget-repricing-xyz9876543210abcde.”
Technical details
Endpoint
POSThttps://handel.halowerk.com/v1/price/articles/target-crossing?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need automated detection of a price crossing a specific threshold for a URL-addressable product or asset, especially when you want a webhook callback to trigger downstream workflows. It is ideal for e-commerce deal monitoring, competitor pricing surveillance, or automated repricing pipelines where idempotent, event-driven price alerts are needed. Prefer this over polling solutions when you want a single, paid, reliable trigger per crossing event.
Side effects
- Invalid or unreachable product URL returns an error
- Currency code not in valid ISO 4217 three-letter format causes validation failure
- Idempotency key too short (under 32 chars) or containing invalid characters is rejected
- Target price or previous price out of allowed range (0–1,000,000,000) causes schema rejection
- Callback URL unreachable results in failed notification delivery
- Payment failure or insufficient USDC balance blocks the request via x402 protocol
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | |
| previous | object | |
| callback_url | string | |
| target_price | number | |
| idempotency_key | string |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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