Building an Autonomous Competitor Price Monitor with Python, Playwright, and Discord (Zero SaaS Fees)

Описание и применение

Автономный монитор цен конкурентов, построенный на Python, HTTPX, Playwright и Discord, позволяет отслеживать динамические изменения цен без SaaS‑платежей, используя SQLite для хранения истории и вебхуки Discord для мгновенных уведомлений.

Задача

Missing competitor price changes by even a few hours can erode daily margins; commercial SaaS monitoring platforms are costly, fragile, and lack fine-grained control.

Результат

The pipeline reduces cost to zero SaaS fees, improves resilience to dynamic DOM changes, and provides real‑time alerts with color coding for price changes.

Рабочий процесс

• Schedule cron job (15–60 min) → Tiered Scraper (HTTPX → Playwright fallback) → SQLite engine (compare & compute delta) → Discord alert dispatcher

Доказательства

Missing a competitor's flash sale or midnight re‑pricing event by even three hours can wipe out daily margins.

Источник

These platforms run between $150 and $800 per month, enforce arbitrary SKU tracking tiers, and frequently fail when target sites tweak dynamic DOM selectors or deploy basic JavaScript challenges.

Источник

It leverages HTTPX for rapid REST/static scraping, Playwright with stealth parameters for client‑side rendered stores, SQLite for time‑series pricing and stock tracking, and Discord Webhooks for instant, color‑coded visual alerts.

Источник