Read Lightspeed R-Series items, stock, sales, customers and POs; create customers and set stock. Hosted by usefulapi — connect from Claude, ChatGPT, Cursor, or any MCP client.
Team and Enterprise: an Owner adds the connector for the organization first.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"lightspeed-r-series": {
"url": "https://lightspeed-r-series.usefulapi.io/mcp"
}
}
}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"
}
}
}No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run these commands. The second one opens the login page:
Other MCP clients (Windsurf, Cline, Zed and more): add the URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser. Do not add an Authorization header: see 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.
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.
Turn on the Lightspeed Retail (R-Series) connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
lightspeedrseries_get_account | read | 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 | read | 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 | read | 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. GET /Account/{accountID}/Item.json. |
lightspeedrseries_get_item | read | Get an 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 | read | List inventory levels 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 | read | List categories Item categories (hierarchical): categoryID, name, fullPathName, parentID, nodeDepth. GET /Account/{accountID}/Category.json. |
lightspeedrseries_list_sales | read | 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 (items sold). Paginate with next_url. GET /Account/{accountID}/Sale.json. |
lightspeedrseries_get_sale | read | Get a 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 | read | 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 | read | Get a customer One customer by customerID with Contact (emails, phones, addresses), customer type and notes. GET /Account/{accountID}/Customer/{customerID}.json. |
lightspeedrseries_list_vendors | read | List vendors Suppliers: vendorID, name, accountNumber, archived. GET /Account/{accountID}/Vendor.json. |
lightspeedrseries_list_purchase_orders | read | 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 | read | Get a 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 | read | List employees Employees: employeeID, firstName, lastName, lockOut, archived, employeeRoleID, limitToShopID. Use employeeID to filter sales. GET /Account/{accountID}/Employee.json. |
lightspeedrseries_create_customer | write | Create a 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 | write | Update an 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 | write | Set stock level 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 lightspeedrseries_get_item's ItemShops. Not for shopID 0 (the all-shops summary). PUT /Account/{accountID}/Item/{itemID}.json with ItemShops. |
lightspeedrseries_usage_status | Usage status (free-tier meter) Report 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. | |
lightspeedrseries_request_feature | Request a missing feature Tell 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. | |
lightspeedrseries_upgrade | Upgrade to Pro (unlimited*) Get Pro: unlimited tool calls (fair use limit: 10,000 a month) on Lightspeed Retail (R-Series) (the free tier caps monthly usage). Plans: "monthly" — $9/month; "yearly" — $90/year (2 months free). Cancel any time: Pro then runs to the end of the paid period, so it also suits a one-time job. *A fair use limit applies. For heavy use (near Pro's limit): "plus" or "plus_yearly" — Pro+, $19/month or $190/year, unlimited tool calls (fair use limit: 100,000 a month); an existing Pro subscription changes to Pro+ in place (needs confirm: true; the price difference for the rest of the period is charged at once). Otherwise returns a short link to open in your browser (it opens Stripe Checkout); after payment the account upgrades automatically. Does not count against the meter. | |
lightspeedrseries_cancel_subscription | Cancel the Pro subscription Cancel 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. |
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper store account | $9/mo · $90/yr | Unlimited* |
*Pro fair use limit: 10,000 tool calls a month on this server. For more, write to [email protected].
Pro covers this Lightspeed Retail (R-Series) server only. Subscribe with lightspeedrseries_upgrade (it returns a Stripe Checkout link). Cancel any time with lightspeedrseries_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running lightspeedrseries_upgrade before then undoes the cancel. Or write to [email protected].
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.
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.
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.
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.
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.
Yes, if you approve it. 3 of the 17 Lightspeed Retail (R-Series) tools can create or change data. The other 14 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls (fair use limit: 10,000 tool calls a month), for this Lightspeed Retail (R-Series) server only. Cancel any time: Pro then runs to the end of the paid period. Run lightspeedrseries_usage_status to see how many calls you used.
Ask the AI to run lightspeedrseries_upgrade: it returns a Stripe Checkout link. To cancel, run lightspeedrseries_cancel_subscription. Pro continues to the end of the paid period.
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.
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.