# Lightspeed Retail (R-Series) Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## Lightspeed Retail (R-Series)

Read and manage inventory, sales, customers and purchase orders in Lightspeed R-Series retail systems.

- Record: https://musedirectory.ai/connector/lightspeed-retail-r-series
- Category: Shopping & Commerce
- Developer: usefulapi (https://usefulapi.io/lightspeed-r-series/)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 264ms, checked 2026-10-29T12:30:57Z
- Endpoint: https://lightspeed-r-series.usefulapi.io/mcp
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-10-29T12:41:33Z)
- Source: Found in the official MCP Registry (io.usefulapi/lightspeed-r-series) https://registry.modelcontextprotocol.io/v0/servers?search=io.usefulapi%2Flightspeed-r-series

Connects to Lightspeed Retail R-Series POS systems. Muse can look up items, stock levels, sales history and customers; create new customers; and adjust inventory counts across shop locations.

Example request: "Check how many units of a product are in stock across all my stores and update the count at one location."

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Lightspeed Retail (R-Series) to help me. It is a free service with an MCP server at https://lightspeed-r-series.usefulapi.io/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Tools:
- lightspeedrseries_get_account: The connected Lightspeed Retail (R-Series) account: id, name, status, employee count/limit, default and purchasing currencies. Good first call. GET /Account/{accountID}.json.
- lightspeedrseries_list_shops: List the account's shops (store locations): shopID, name, time zone, archived flag. Use shopID to filter sales, inventory and purchase orders. GET /Account/{accountID}/Shop.json.
- lightspeedrseries_list_items: Search the product catalog. Each item has itemID, description, SKUs (systemSku, customSku, upc, ean, manufacturerSku), defaultCost, categoryID and its Prices (price levels). Set include_stock to add per-shop quantities (ItemShops; shopID 0 = all shops). Paginate with next_url. GE
- lightspeedrseries_get_item: One item by itemID with its prices, per-shop stock (ItemShops), category and other related records. GET /Account/{accountID}/Item/{itemID}.json.
- lightspeedrseries_list_inventory: Stock levels per item per shop (ItemShop records): qoh (quantity on hand), sellable, backorder, reorderPoint, reorderLevel, costs and values. shopID 0 is the all-shops summary. Paginate with next_url. GET /Account/{accountID}/ItemShop.json.
- lightspeedrseries_list_categories: Item categories (hierarchical): categoryID, name, fullPathName, parentID, nodeDepth. GET /Account/{accountID}/Category.json.
- lightspeedrseries_list_sales: Sales history: saleID, completed/voided flags, completeTime, totals (calcSubtotal, calcTax1/2, total, balance), customerID, employeeID, shopID, registerID. Filter by a date range on completeTime (default) or timeStamp, shop, customer, employee. Set include_lines for SaleLines (it
- lightspeedrseries_get_sale: One sale by saleID with its line items (SaleLines with Item), payments (SalePayments with PaymentType) and customer. GET /Account/{accountID}/Sale/{saleID}.json.
- lightspeedrseries_list_customers: Search customers by name, company or email: customerID, firstName, lastName, company, customerTypeID, createTime. Email search loads the Contact relation (emails, phones, addresses). Paginate with next_url. GET /Account/{accountID}/Customer.json.
- lightspeedrseries_get_customer: One customer by customerID with Contact (emails, phones, addresses), customer type and notes. GET /Account/{accountID}/Customer/{customerID}.json.
- lightspeedrseries_list_vendors: Suppliers: vendorID, name, accountNumber, archived. GET /Account/{accountID}/Vendor.json.
- lightspeedrseries_list_purchase_orders: Purchase orders to vendors: orderID, vendorID, shopID, orderedDate, arrivalDate, receivedDate, complete, totalQuantity, shipCost. GET /Account/{accountID}/Order.json.
- lightspeedrseries_get_purchase_order: One purchase order by orderID with its lines (OrderLines: itemID, quantity, numReceived, price), vendor and shop. GET /Account/{accountID}/Order/{orderID}.json.
- lightspeedrseries_list_employees: Employees: employeeID, firstName, lastName, lockOut, archived, employeeRoleID, limitToShopID. Use employeeID to filter sales. GET /Account/{accountID}/Employee.json.
- lightspeedrseries_create_customer: Create a new customer, optionally with a primary email and one phone number (stored in the customer's Contact). Give at least a first name, last name or company. Returns the new customer with its customerID. POST /Account/{accountID}/Customer.json.
- lightspeedrseries_update_item: Change fields of an existing item: description, default cost, SKUs, category. Only the fields you pass are changed. Prices and stock are not changed here (use lightspeedrseries_update_stock for quantities). PUT /Account/{accountID}/Item/{itemID}.json.
- lightspeedrseries_update_stock: CHANGES STOCK COUNTS: sets (does not add to) the quantity on hand of one item in one shop to `qoh`, by updating the item's ItemShop record. Use for correcting a few items; for many items use an inventory count in Lightspeed. Identify the shop by shop_id, or by item_shop_id from l

Screening checks:
- MCP handshake: pass (Answered in 148ms)
- Domain against threat feeds (Cloudflare security DNS): pass (lightspeed-r-series.usefulapi.io, usefulapi.io not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: pass (17 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (No redirects off the domain)
- AI review of purpose and tool behavior: pass (No concerns)