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FinancialMCP serverFirst audited Nov 13, 2026

Lightspeed Retail (R-Series) MCP by usefulapi

Read Lightspeed R-Series items, stock, sales, customers and POs; create customers and set stock.The vendor's description, from its MCP Registry listing.

Passed public checksAudited Nov 13, 2026

Every public check ran and passed. Public audit: we connect as an AI client would, list the tools and check what they say. We do not run them. How we audit

Does it work?
YesConnected in 348 ms.
Sign-up?
None neededIt answered without any account or key.
Can it change things?
YesSome tools say they can change things. Your AI client should ask you first.
Endpointhttps://lightspeed-r-series.usefulapi.io/mcp

Source code Website Streamable HTTP · protocol 2025-11-25 · server version 1.36.1

What we checked, the evidence, and the tools it offers.

What we checked

Security

  • Passed: Connections are encrypted (HTTPS).

  • Passed: No hidden instructions found in tool text.

Safety labels

  • Note: 3 tools are labelled as able to change things.

    Expected for tools that send, write or buy. Your AI client should ask before calling them.

    • lightspeedrseries_create_customer
    • lightspeedrseries_update_item
    • lightspeedrseries_update_stock
  • Passed: Every tool says whether it only reads or can change things.

Tools

  • Passed: 18 tools listed.

  • Passed: Every tool describes its inputs with a valid schema.

Protocol

  • Passed: The MCP handshake works (Streamable HTTP).

  • Passed: Protocol version 2025-11-25 (latest).

  • Passed: Unknown requests are refused.

Connection

  • Passed: The server responds.

Tools (18)

As the server describes them. The labels are the server's own: it says whether each tool only reads or can change things.

  • 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.Read-only
  • 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.Read-only
  • 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…Read-only
  • lightspeedrseries_get_itemOne item by itemID with its prices, per-shop stock (ItemShops), category and other related records. GET /Account/{accountID}/Item/{itemID}.json.Read-only
  • 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…Read-only
  • 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…Read-only
  • lightspeedrseries_list_categoriesItem categories (hierarchical): categoryID, name, fullPathName, parentID, nodeDepth. GET /Account/{accountID}/Category.json.Read-only
  • 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 (def…Read-only
  • lightspeedrseries_get_saleOne sale by saleID with its line items (SaleLines with Item), payments (SalePayments with PaymentType) and customer. GET /Account/{accountID}/Sale/{saleID}.json.Read-only
  • 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 ne…Read-only
  • lightspeedrseries_get_customerOne customer by customerID with Contact (emails, phones, addresses), customer type and notes. GET /Account/{accountID}/Customer/{customerID}.json.Read-only
  • lightspeedrseries_list_vendorsSuppliers: vendorID, name, accountNumber, archived. GET /Account/{accountID}/Vendor.json.Read-only
  • lightspeedrseries_list_purchase_ordersPurchase orders to vendors: orderID, vendorID, shopID, orderedDate, arrivalDate, receivedDate, complete, totalQuantity, shipCost. GET /Account/{accountID}/Order.json.Read-only
  • 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.Read-only
  • lightspeedrseries_list_employeesEmployees: employeeID, firstName, lastName, lockOut, archived, employeeRoleID, limitToShopID. Use employeeID to filter sales. GET /Account/{accountID}/Employee.json.Read-only
  • 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 cus…Can change things
  • 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 quant…Can change things
  • 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 inven…Can change things

Audit history

  1. Nov 13Passed

What we sent

Every request in this audit, with the answer and how long it took. We never send credentials and never call a tool.

RequestAnswerTime
initializeHTTP 200348 ms
initializedHTTP 20246 ms
tools/listHTTP 200369 ms
prompts/listHTTP 20038 ms
unknown-methodHTTP 40125 ms

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