Dmytro Galko · open-source tools

price-stock-monitor

Name: price-stock-monitor
Author: Dmytro Galko

Price and stock changes, with the history to prove them

Operators track competitor prices and restocks by opening tabs and typing numbers into a spreadsheet, which means they learn about a change whenever they next look. Point this at a product URL with a CSS selector and it watches on a schedule, keeps every observation, and says what moved and by how much.

Source on GitHub Work with me

What it does

A CSS selector rather than a per-shop integration, so Shopify, WooCommerce, a marketplace and a hand-written page are all the same case.
Every observation is stored, so a claim about a price two weeks ago can be checked instead of remembered.
Change detection reports the delta and the direction, including out-of-stock and back-in-stock, which is usually the more valuable of the two.

How it is proved

25 of 25 self-checks pass offline, covering parsing, change detection and the history it keeps.

PythonSQLite history25 self-checksCSS selectors

People find this looking for

competitor price monitoring python, track stock changes css selector, price drop alert cli, restock notification scraper, price history sqlite.

If that is your week and you would rather someone else did it, write to hello@dkautomation.dev or open an issue.