Price Inventory Watcher

The problem

Manually refreshing product pages to catch price drops or restocks is a waste of time. Missing a competitor's price change or running out of your own inventory costs you revenue and market advantage.

What it does

• Monitors external product URLs or internal store inventory on a custom schedule.
• Detects price drops based on a specific percentage threshold you define.
• Identifies restocks and flags low-stock conditions before you sell out.
• Sends consolidated alerts to Telegram, Slack, or email only when actionable changes occur.
• Maintains a local state history to compare real price shifts against baselines.

Frameworks & tools

Supports Telegram Bot API, Slack Webhooks, and SMTP for alerts. Works with CSV-based watchlists and JSON for state management.

Why this beats prompting it yourself

This skill handles state persistence, ensuring you only get notified when a value actually crosses a threshold rather than receiving a report every time the agent runs. It includes built-in logic for handling transient fetch failures, preventing false alarms from temporary page timeouts.

Use cases

• Track competitor pricing for retail arbitrage or dropshipping.
• Monitor supplier stock levels to automate reordering workflows.
• Audit your own store inventory for low-stock alerts.
• Watch high-demand items for instant restock notifications.

Known limitations

Does not support polling frequencies faster than 30 minutes to avoid rate limiting. Price drop and restock detection require at least one prior run to establish a baseline.

How to install and use this skill

1. Grok Bot (primary use case — runs as a standing watcher)

Download the zip and unzip it into ~/.grok/skills/price-inventory-watcher/ (or ./.grok/skills/ for one project only). The folder must contain SKILL.md at its root. Restart Grok Bot, or reload skills from the extensions panel (/skills). Talk to your bot in plain language — this is a routine-driven skill, not something you type as a slash command every time:

"Use the price-inventory-watcher skill to check these 5 product URLs from watchlist.csv every 4 hours, and alert me on Telegram when anything crosses the threshold."

The bot sets up a routine from the workflow in SKILL.md and confirms the watch list back to you before the first run — approve it once, and it runs on its own from there.

2. Claude Code

Unzip into ~/.claude/skills/price-inventory-watcher/ (personal) or .claude/skills/price-inventory-watcher/ (project-only). Start a new session — the skill appears automatically. Reference it directly, or by typing /price-inventory-watcher. Example: /price-inventory-watcher watch my Shopify store's inventory and alert me on Slack when anything drops below 10 units.

3. Cursor

Unzip into ~/.cursor/skills/price-inventory-watcher/ (all projects) or .cursor/skills/price-inventory-watcher/ at your repo root (one project). Reload the window (Developer: Reload Window from the command palette). Open the composer and describe the watch job in plain language — the skill activates automatically when it matches what you're asking for.

4. Other SKILL.md-compatible agents (Codex, Copilot, etc.) Use the cross-agent convention: unzip into .agents/skills/price-inventory-watcher/ at your project root, or check your specific agent's docs for its preferred skills folder if that path isn't picked up. The SKILL.md content and workflow don't change between clients — only where the folder goes.