Check yesterday's sales in Lightspeed Retail from ChatGPT

22 October 2026 · Lightspeed Retail (R-Series) MCP server

You can ask ChatGPT or Claude how your stores sold yesterday in Lightspeed Retail (R-Series). The AI reads the sales per store, shows which items sold, and checks what is low on stock. To start, add https://lightspeed-r-series.usefulapi.io/mcp to your AI client as a connector.

Which prompt do I start with?

What were my total sales yesterday at each store? Show the 10 items that sold the most and their stock now.

What does the AI do, step by step?

1. It lists your stores with lightspeedrseries_list_shops.
2. It reads the sales for a date range and a store with lightspeedrseries_list_sales. With the sale lines, it sees which items sold. One sale in full comes from lightspeedrseries_get_sale.
3. It checks stock per item and store with lightspeedrseries_list_inventory or lightspeedrseries_list_items.
4. It finds open purchase orders with lightspeedrseries_list_purchase_orders.

What can the AI change in Lightspeed?

• Most tools only read. The server can create a customer, change an item's details, and set a stock level, when you ask.
• lightspeedrseries_update_stock sets the quantity on hand to a number. It does not add to it. For many items, use an inventory count in Lightspeed.
• The AI can do only what the Lightspeed employee who signs in is allowed to do. You can revoke the access from your Lightspeed Retail account settings.

What do I need?

A Lightspeed Retail (R-Series) employee login. You sign in with Lightspeed and approve the access. You do not need an API key. See the setup steps for Claude, ChatGPT, Cursor and other clients.