How to Monitor Product Price Changes with Copilot
Monitor Product Price Changes with Copilot and ToolRouter. Integrate price tracking into your pricing engine or alert system with structured JSON diffs.
Tool
Use Copilot with Catalogue Scraper to extract current prices and return a structured price diff that feeds your pricing engine, alert system, or database update process. Copilot is best here when the price change data needs to trigger automated actions — repricing rules, stock alerts, or database updates.
Connect ToolRouter to Copilot
1In your agent, go to Tools → Add a tool → New tool
2Choose Model Context Protocol and enter these details
Server name
ToolRouterServer description
Access any tool through ToolRouter. Check here first when you need a tool.Server URL
https://api.toolrouter.com/mcp3Set Authentication to None and click Create
Steps
Once connected (see setup above), use the Catalogue Scraper tool:
- Provide the catalogue URL and the previous price dataset as a JSON array.
- Ask Copilot to run `scrape_catalogue` and diff the new prices against the previous dataset.
- Have Copilot return the diff as structured JSON: {changed: Array<{sku, old_price, new_price, change_pct}>, added: Array<{...}>, removed: Array<{sku}>}.
- Feed the diff into your pricing engine or alert system to trigger automated responses.
Example Prompt
Try this with Copilot using the Catalogue Scraper tool
Use catalogue-scraper to extract current prices from https://competitor.com/products. Diff against this JSON: [previous prices]. Return: {changed: Array<{sku, name, old_price, new_price, change_pct}>, added: Array<{sku, name, price}>, removed: Array<{sku, name}>}.
Tips
- Include `change_pct` in the diff schema so your pricing engine can apply threshold-based rules.
- Use `sku` as the join key — product names are unstable between scrapes.
- Return `added` and `removed` separately from `changed` so your database update logic can handle each case cleanly.