usefulapiLightspeed Retail (R-Series) MCP server
Read Lightspeed R-Series items, stock, sales, customers and POs; create customers and set stock. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
What can I ask?
Turn on the Lightspeed Retail (R-Series) connector, then ask in plain words. The AI picks the tools.
- Which items are low on stock at my main store?
- What were my total sales yesterday across all of my stores?
- Show the purchase orders still waiting to arrive from our vendors.
- Look up the customer Jane Smith and show her contact details.
What you can do with Lightspeed Retail (R-Series) in Claude and ChatGPT
For retail store owners and managers who run stock and sales in Lightspeed Retail (R-Series).
Find items that are low on stock
The AI reads quantity on hand, sellable stock, backorder and reorder point per item and shop. It lists the items below their reorder point in a store.
Sum up sales for a day or period
The AI lists completed sales in a date range, by shop or employee, and adds up totals and tax. With line items it shows what sold.
Track purchase orders from vendors
The AI lists purchase orders with ordered, arrival and received dates and shows which are not complete. It reads the order lines to compare quantities ordered and received.
Look up or add a customer
The AI searches customers by name, company or email and reads emails, phones, addresses and notes. You can also add a new customer with an email and phone.
Changes dataCorrect item details and stock counts
The AI changes an item's description, default cost, SKUs or category, and sets the quantity on hand for one item in one shop. Good for fixing a few items.
Changes dataHow do I connect Lightspeed Retail (R-Series)?
Before you connect
You sign in with your Lightspeed Retail (R-Series) account and approve the access (OAuth). You do not need an API key.
This server reads your items, stock levels, sales, customers, vendors, purchase orders and employees, and can create customers, edit items and set stock levels when you ask it to. It can do only what the Lightspeed employee who signs in is allowed to do. You can revoke access any time from your Lightspeed Retail account settings.
Claude claude.ai · Desktop
- Open Customize → Connectors, then click + Add → Add custom connector.
- Enter the name Lightspeed Retail (R-Series) and this URL, then click Add:https://
lightspeed-r-series. usefulapi. io/ mcp - Claude opens the Lightspeed Retail (R-Series) login page: sign in and approve the access.
- In a chat, click + → Connectors and turn on Lightspeed Retail (R-Series).
Team and Enterprise: an Owner adds the connector for the organization first.
ChatGPT chatgpt.com
- Open Plugins, click +, then Add custom MCP server.
- Enter the name Lightspeed Retail (R-Series) and this URL, choose OAuth as the authentication, confirm the warning and create it:https://
lightspeed-r-series. usefulapi. io/ mcp - ChatGPT opens the Lightspeed Retail (R-Series) login page: sign in and approve the access.
- In Plugins, install Lightspeed Retail (R-Series), then choose it in a chat.
No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Claude Code
Run this command, then run /mcp in Claude Code to log in:
Cursor
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"lightspeed-r-series": {
"url": "https://lightspeed-r-series.usefulapi.io/mcp"
}
}
} VS Code
Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"lightspeed-r-series": {
"type": "http",
"url": "https://lightspeed-r-series.usefulapi.io/mcp"
}
}
} Codex
Run these commands. The second one opens the login page:
Other clients
Windsurf, Cline, Zed and other MCP clients: add this URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser.
Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: you sign in with your Lightspeed Retail (R-Series) account. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
Guides
- Check yesterday's sales in Lightspeed Retail from ChatGPT
ChatGPT or Claude can read Lightspeed Retail (R-Series) sales per store, show what sold, and check stock levels, after you sign in with Lightspeed.
22 October 2026
Pricing
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper store account | $9/mo · $90/yr | 10,000 tool calls / month |
| Pro+per store account | $39/mo · $390/yr | 100,000 tool calls / month |
Each paid plan covers this Lightspeed Retail (R-Series) server only. Ask your AI to run lightspeedrseries_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with lightspeedrseries_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with lightspeedrseries_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
Tools 22
Show all 22 tools (the AI picks them for you)
Read only · 15
- Get account
lightspeedrseries_get_accountThe connected Lightspeed Retail (R-Series) account: id, name, status, employee count/limit, default and purchasing currencies. Good first call. - List shops
lightspeedrseries_list_shopsList the account's shops (store locations): shopID, name, time zone, archived flag. Use shopID to filter sales, inventory and purchase orders. - List items
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. - Get an item
lightspeedrseries_get_itemOne item by itemID with its prices, per-shop stock (ItemShops), category and other related records. - List inventory levels
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. - List inventory history
lightspeedrseries_list_inventory_logInventory change history (InventoryLog, read-only): one record per stock change with itemID, shopID, qohChange (+ received, - removed), costChange (the item's new unit cost after the change), reason (e.g. ManualQuantityAdjustment, ItemImport, AddInventoryForCount, RemoveForTransaction; the vendor's list is not exhaustive), createTime, employeeID, automated, and the source record when there is one: orderID (purchase order), saleID, transferID, inventoryCountID, vendorReturnID, itemImportID (0 = none). For receiving history use received_only with a created_from/created_to range: stock received directly on items shows as a manual adjustment with orderID 0. There is no vendor field: a PO-based receipt gives the vendor via lightspeedrseries_get_purchase_order. Newest first by default. - List categories
lightspeedrseries_list_categoriesItem categories (hierarchical): categoryID, name, fullPathName, parentID, nodeDepth. - List sales
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 (items sold). Paginate with next_url. - Get a sale
lightspeedrseries_get_saleOne sale by saleID with its line items (SaleLines with Item), payments (SalePayments with PaymentType) and customer. - List customers
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 a customer
lightspeedrseries_get_customerOne customer by customerID with Contact (emails, phones, addresses), customer type and notes. - List vendors
lightspeedrseries_list_vendorsSuppliers: vendorID, name, accountNumber, archived. - List purchase orders
lightspeedrseries_list_purchase_ordersPurchase orders to vendors: orderID, vendorID, shopID, orderedDate, arrivalDate, receivedDate, complete, totalQuantity, shipCost. - Get a purchase order
lightspeedrseries_get_purchase_orderOne purchase order by orderID with its lines (OrderLines: itemID, quantity, numReceived, price), vendor and shop. - List employees
lightspeedrseries_list_employeesEmployees: employeeID, firstName, lastName, lockOut, archived, employeeRoleID, limitToShopID. Use employeeID to filter sales.
Changes data · 3
- Create a customer
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. - Update an item
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). - Set stock level
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 lightspeedrseries_get_item's ItemShops. Not for shopID 0 (the all-shops summary). PUT /Account/{accountID}/Item/{itemID}.json with ItemShops.
Your usefulapi plan · 4
- Usage status (free-tier meter)
lightspeedrseries_usage_statusReport the caller's current usage: the plan, calls used this month, the limit of the plan (the free monthly cap or the Pro fair use limit), remaining, and whether the limit is reached. Read-only; does not count against the meter. - Request a missing feature
lightspeedrseries_request_featureTell usefulapi that the user needs something the Lightspeed Retail (R-Series) tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter. - Upgrade to Pro or Pro+
lightspeedrseries_upgradeGet a paid plan for Lightspeed Retail (R-Series) (the free tier caps monthly usage). Pro: 10,000 tool calls a month, for normal use — plan "monthly" ($9/month) or "yearly" ($90/year, 2 months free). Pro+: 100,000 tool calls a month, for automations and heavy use — plan "plus" ($39/month) or "plus_yearly" ($390/year). Without a plan it returns both Pro and Pro+, each with a payment link, for the user to choose; with a plan, one link. An existing Pro subscription changes to Pro+ in place: call without confirm first, as the reply states the exact charge for this account (the price difference for the rest of the period, or in a free Pro trial the full Pro+ price, as the trial ends); then call with confirm: true. Cancel any time: the plan then runs to the end of the paid period, so it also suits a one-time job. A link opens Stripe Checkout in the browser; after payment the account upgrades automatically. Does not count against the meter. - Cancel the Pro subscription
lightspeedrseries_cancel_subscriptionCancel the caller's Lightspeed Retail (R-Series) Pro subscription at the end of the paid period (no refund for the current period; Pro continues until then, then the free tier applies). Requires confirm: true. Run lightspeedrseries_upgrade later to undo the cancel before the period ends. Does not count against the meter.
FAQ
What can I do with Lightspeed Retail (R-Series) in Claude or ChatGPT?
Find items that are low on stock. Sum up sales for a day or period. Track purchase orders from vendors. Look up or add a customer. Correct item details and stock counts. See what you can do for the details.
Is this an official Lightspeed Retail (R-Series) product?
No. usefulapi is an independent service. It is not affiliated with or endorsed by Lightspeed Retail (R-Series). The server calls the Lightspeed Retail (R-Series) API with your own Lightspeed Retail (R-Series) access, so it sees only the data that your account can see.
Can I connect Lightspeed Retail (R-Series) to Claude or ChatGPT?
Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.
What do I need to connect?
A Lightspeed Retail (R-Series) account. You sign in to Lightspeed Retail (R-Series) and approve the access. You do not need an API key.
Do I add an Authorization header to the client config?
No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: you sign in with your Lightspeed Retail (R-Series) account. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
How do you keep my Lightspeed Retail (R-Series) credentials?
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Lightspeed Retail (R-Series) API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. You can revoke the access in Lightspeed Retail (R-Series) at any time.
Can the AI change my Lightspeed Retail (R-Series) data?
Yes, if you approve it. 3 of the 18 Lightspeed Retail (R-Series) tools can create or change data. The other 15 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
What does it cost?
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this Lightspeed Retail (R-Series) server only. Cancel any time: your paid plan then runs to the end of the paid period. Run lightspeedrseries_usage_status to see how many calls you used.
How do I subscribe or cancel?
Ask the AI to run lightspeedrseries_upgrade and choose Pro or Pro+, billed monthly or yearly: it returns a Stripe Checkout link. If you already have Pro, ask to change it to Pro+. After you confirm, your existing subscription changes in place, keeps its billing interval and charges the price difference for the rest of the period immediately. To cancel, run lightspeedrseries_cancel_subscription. Your paid plan continues to the end of the paid period.
What if a Lightspeed Retail (R-Series) tool that I need is missing?
Tell the AI what you wanted to do. It can send the request with lightspeedrseries_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Which AI clients can I use?
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.
Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.