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Price Drop Alert
x402shopping
Price Drop Alert is a paid API for AI agents from api.syntalic.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Check whether a product's current price is below its rolling average, returning current price, rolling average, lowest-seen price, and date within a configurable lookback window.
Price / call$0.01
Success0%
StatusUnknown
How this service works
Check whether a product's current price is below its rolling average within a configurable lookback window. Returns current price vs. the average across the window plus the lowest-seen price and date. Response field `avg_price_last_30d` is a fixed name for backwards compatibility; the value is always computed across the configured `lookback_days` window.
Output
Returns an array of matching product price-drop results, each containing the current price, the rolling average price over the configured lookback window (field named avg_price_last_30d for backwards compatibility), the lowest-seen price and its date, and the original query string.
Example use cases
Example prompt
“Is the current price of AirPods on Amazon lower than its 30-day average? Check against a 30-day lookback window in the US and tell me the current price, the rolling average, and the lowest price ever seen.”
Technical details
Endpoint
GEThttps://api.syntalic.com/v1/shopper/price-drop-alertWhen to prefer
Use this endpoint when you need to determine whether a product's current price represents a good deal relative to its recent price history — specifically when comparing against a rolling average and lowest-seen price. Prefer this over a simple best-price lookup when the goal is historical context and deal detection rather than just cross-retailer comparison.
Side effects
- Empty 'drops' array if no products match the search query
- Unsupported retailer or country enum value returns validation error
- Very short or ambiguous query string may yield irrelevant results
- lookback_days values outside acceptable range may return errors or default behavior
- Price data unavailable for niche or newly listed products
Input
{
"q": "laptop",
"country": "us",
"retailer": "amazon",
"lookback_days": 30
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| qrequired | string | Search query (product name, keyword, or category term) |
| country | string | Country (us or ca) |
| retailer | string | Filter to a specific retailer |
| lookback_days | integer | Days to look back for price drops (default 30) |
Output
{
"query": "laptop",
"scope": "listing",
"country": "us",
"currency": "USD",
"retailer": "amazon",
"condition": "refurbished",
"entity_uid": "4e39ad2ba123b2f4bc05b38947ea4537",
"lowest_seen": 389.9,
"product_uid": "amazon:B07JB2C4RZ",
"member_count": 1,
"product_name": "Apple 15.4in MacBook Pro Laptop (Retina, Touch Bar, 2.6GHz 6-Core Intel Core i7, 16GB RAM, 512GB SSD Storage) Space Gray (MR942LL/A) (2018 Model) (Renewed)",
"current_price": 389.9,
"is_price_drop": false,
"lowest_seen_date": "2026-06-15",
"price_vs_avg_pct": 0,
"resolved_product": {
"scope": "listing",
"retailer": "amazon",
"condition": "refurbished",
"entity_uid": "4e39ad2ba123b2f4bc05b38947ea4537",
"product_uid": "amazon:B07JB2C4RZ",
"member_count": 1,
"product_name": "Apple 15.4in MacBook Pro Laptop (Retina, Touch Bar, 2.6GHz 6-Core Intel Core i7, 16GB RAM, 512GB SSD Storage) Space Gray (MR942LL/A) (2018 Model) (Renewed)",
"product_type": null,
"category_path": "computers/computers-tablets/laptops/traditional-laptops"
},
"observation_count": 1,
"avg_price_last_30d": 389.9,
"insufficient_history": true
}Schema · Response
| Field | Type | Description |
|---|---|---|
| drops | array | |
| query | string |
Tags
x402shopping
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