Lightspeed Retail (R-Series)
Read and manage inventory, sales, customers and purchase orders in Lightspeed R-Series retail systems.
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.
Try asking Muse: "Check how many units of a product are in stock across all my stores and update the count at one location."
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Source: Found in the official MCP Registry (io.usefulapi/lightspeed-r-series) · First listed October 28, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 3 h ago.
Is it safe to connect?
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. 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.
https://lightspeed-r-series.usefulapi.io/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Also use it in ChatGPT or Claude
Lightspeed Retail (R-Series) is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
Add it to ChatGPT
- 1
Open ChatGPT settings
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
- 2
Turn on developer mode
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
- 3
Create the connector
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
- 4
Use it in a chat
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
Add it to Claude
- 1
Open Claude settings
In Claude, open Settings, then Connectors.
- 2
Add a custom connector
Choose Add custom connector, give it a name, and paste the link.
- 3
Connect and use it
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://lightspeed-r-series.usefulapi.io/mcpWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 399ms. Worked in 100% of checks over 30 days.
Screening · October 29, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 17
lightspeedrseries_get_accountThe 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_shopsList 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_itemsSearch 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. GElightspeedrseries_get_itemOne item by itemID with its prices, per-shop stock (ItemShops), category and other related records. GET /Account/{accountID}/Item/{itemID}.json.lightspeedrseries_list_inventoryStock 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_categoriesItem categories (hierarchical): categoryID, name, fullPathName, parentID, nodeDepth. GET /Account/{accountID}/Category.json.lightspeedrseries_list_salesSales 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 (itlightspeedrseries_get_saleOne sale by saleID with its line items (SaleLines with Item), payments (SalePayments with PaymentType) and customer. GET /Account/{accountID}/Sale/{saleID}.json.lightspeedrseries_list_customersSearch 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_customerOne customer by customerID with Contact (emails, phones, addresses), customer type and notes. GET /Account/{accountID}/Customer/{customerID}.json.lightspeedrseries_list_vendorsSuppliers: vendorID, name, accountNumber, archived. GET /Account/{accountID}/Vendor.json.lightspeedrseries_list_purchase_ordersPurchase orders to vendors: orderID, vendorID, shopID, orderedDate, arrivalDate, receivedDate, complete, totalQuantity, shipCost. GET /Account/{accountID}/Order.json.lightspeedrseries_get_purchase_orderOne purchase order by orderID with its lines (OrderLines: itemID, quantity, numReceived, price), vendor and shop. GET /Account/{accountID}/Order/{orderID}.json.lightspeedrseries_list_employeesEmployees: employeeID, firstName, lastName, lockOut, archived, employeeRoleID, limitToShopID. Use employeeID to filter sales. GET /Account/{accountID}/Employee.json.lightspeedrseries_create_customerCreate 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_itemChange 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_stockCHANGES 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 lRecent checks
Link
https://lightspeed-r-series.usefulapi.io/mcpQuestions about Lightspeed Retail (R-Series) in Muse
How do I connect Lightspeed Retail (R-Series) to Muse?
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.
Is Lightspeed Retail (R-Series) working right now?
At the last check (October 29, 2026, 08:46 UTC) the endpoint was working, answering in 399ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
Is Lightspeed Retail (R-Series) safe to connect to Muse?
It was screened on October 29, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can Lightspeed Retail (R-Series) do in Muse?
It exposes 17 tools, including lightspeedrseries_get_account, lightspeedrseries_list_shops, lightspeedrseries_list_items, lightspeedrseries_get_item. For example, you could ask Muse: "Check how many units of a product are in stock across all my stores and update the count at one location."
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