Shoptet API Product Data Integration

I run a Czech e-shop on the Shoptet platform and need the Shoptet REST API turned into a working bridge between my store and an external system. My only goal right now is data integration, and the focus is squarely on product data—specifically inventory levels and pricing information—so everything stays perfectly in sync.

What I’m looking for
• A clean, well-commented script (PHP, Python, or a language you recommend) or a Postman collection that authenticates to Shoptet, pulls stock and price data, and can push updates back.
• Clear, beginner-friendly setup instructions so I can run the integration myself after delivery.
• Basic error logging so I know when and why something fails.

Acceptance criteria
• A single command (or scheduled task) fetches live inventory and pricing, outputs JSON or CSV, and completes without errors.
• Sending an updated file or making a simple call updates Shoptet successfully, with confirmation returned.
• Any failure is logged with a helpful message I can understand.

I have the API keys ready and can supply sample products for testing. Tell me which stack you’d like to use, an outline of your approach, and an estimated timeline. Thanks in advance—I’m excited to finally get this integration up and running!