diff --git a/mcp-gateway/erpnext-mcp/src/tools/stock.ts b/mcp-gateway/erpnext-mcp/src/tools/stock.ts
new file mode 100644
index 0000000..74f427e
--- /dev/null
+++ b/mcp-gateway/erpnext-mcp/src/tools/stock.ts
@@ -0,0 +1,364 @@
+import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
+import { ERPNextClient, truncateResponse } from "../services/erpnext-client.js";
+import { z } from "zod";
+
+export function registerStockTools(server: McpServer, client: ERPNextClient): void {
+
+  // ─── 37. Get Stock Balance ─────────────────────────────
+  server.registerTool(
+    "erpnext_get_stock_balance",
+    {
+      title: "Get Stock Balance",
+      description: `Get current stock balance for an item in a warehouse.
+
+Args:
+  - item_code: Item code
+  - warehouse: Warehouse name
+  - posting_date: Optional as-of date
+  - posting_time: Optional as-of time`,
+      inputSchema: z.object({
+        item_code: z.string(),
+        warehouse: z.string(),
+        posting_date: z.string().optional(),
+        posting_time: z.string().optional(),
+      }).strict(),
+      annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const result = await client.callMethod("erpnext.stock.utils.get_stock_balance", params);
+        return { content: [{ type: "text", text: `Stock balance for ${params.item_code} in ${params.warehouse}: ${result}` }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+
+  // ─── 38. Get Latest Stock Qty ──────────────────────────
+  server.registerTool(
+    "erpnext_get_latest_stock_qty",
+    {
+      title: "Get Latest Stock Quantity",
+      description: `Get the latest available stock quantity for an item across all or a specific warehouse.`,
+      inputSchema: z.object({
+        item_code: z.string(),
+        warehouse: z.string().optional(),
+      }).strict(),
+      annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const result = await client.callMethod("erpnext.stock.utils.get_latest_stock_qty", params);
+        return { content: [{ type: "text", text: `Latest stock qty for ${params.item_code}: ${result}` }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+
+  // ─── 39. Make Stock Entry ──────────────────────────────
+  server.registerTool(
+    "erpnext_make_stock_entry",
+    {
+      title: "Make Stock Entry",
+      description: `Create a stock entry for material transfer, receipt, issue, etc.
+
+Args:
+  - purpose: "Material Transfer", "Material Receipt", "Material Issue", "Manufacture", "Repack", "Send to Subcontractor"
+  - company: Company name
+  - items: Array of {item_code, qty, s_warehouse? (source), t_warehouse? (target), basic_rate?}
+  - posting_date: Optional date`,
+      inputSchema: z.object({
+        purpose: z.enum(["Material Transfer", "Material Receipt", "Material Issue", "Manufacture", "Repack", "Send to Subcontractor"]),
+        company: z.string(),
+        items: z.array(z.object({
+          item_code: z.string(),
+          qty: z.number(),
+          s_warehouse: z.string().optional(),
+          t_warehouse: z.string().optional(),
+          basic_rate: z.number().optional(),
+        })),
+        posting_date: z.string().optional(),
+        from_warehouse: z.string().optional(),
+        to_warehouse: z.string().optional(),
+      }).strict(),
+      annotations: { readOnlyHint: false, destructiveHint: false, idempotentHint: false, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const doc = await client.createDocument("Stock Entry", {
+          stock_entry_type: params.purpose,
+          company: params.company,
+          posting_date: params.posting_date,
+          from_warehouse: params.from_warehouse,
+          to_warehouse: params.to_warehouse,
+          items: params.items,
+        });
+        return { content: [{ type: "text", text: `Created Stock Entry: ${doc.name} (${params.purpose})` }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+
+  // ─── 40. Scan Barcode ──────────────────────────────────
+  server.registerTool(
+    "erpnext_scan_barcode",
+    {
+      title: "Scan Barcode",
+      description: `Look up an item by barcode, serial number, or batch number.`,
+      inputSchema: z.object({ search_value: z.string().describe("Barcode, serial no, or batch no") }).strict(),
+      annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const result = await client.callMethod("erpnext.stock.utils.scan_barcode", {
+          search_value: params.search_value,
+        });
+        return { content: [{ type: "text", text: JSON.stringify(result, null, 2) }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+
+  // ─── 41. Get Projected Qty ─────────────────────────────
+  server.registerTool(
+    "erpnext_get_projected_qty",
+    {
+      title: "Get Projected Quantity",
+      description: `Get the projected (planned) quantity for an item in a warehouse, accounting for pending orders.`,
+      inputSchema: z.object({
+        item_code: z.string(),
+        warehouse: z.string(),
+      }).strict(),
+      annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const result = await client.callMethod("erpnext.stock.get_item_details.get_projected_qty", params);
+        return { content: [{ type: "text", text: JSON.stringify(result, null, 2) }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+
+  // ─── 42. Get Bin Details ───────────────────────────────
+  server.registerTool(
+    "erpnext_get_bin_details",
+    {
+      title: "Get Bin Details",
+      description: `Get detailed stock bin information (actual qty, planned qty, ordered qty, reserved qty, etc.) for an item in a warehouse.`,
+      inputSchema: z.object({
+        item_code: z.string(),
+        warehouse: z.string(),
+        company: z.string().optional(),
+      }).strict(),
+      annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const result = await client.callMethod("erpnext.stock.get_item_details.get_bin_details", params);
+        return { content: [{ type: "text", text: JSON.stringify(result, null, 2) }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+
+  // ─── 43. Item Dashboard Data ───────────────────────────
+  server.registerTool(
+    "erpnext_get_item_dashboard_data",
+    {
+      title: "Get Item Dashboard Data",
+      description: `Get warehouse-wise stock data for items, showing actual qty, planned qty, and reserved qty.`,
+      inputSchema: z.object({
+        item_code: z.string().optional(),
+        warehouse: z.string().optional(),
+        item_group: z.string().optional(),
+        start: z.number().default(0),
+        sort_by: z.string().default("actual_qty"),
+        sort_order: z.enum(["asc", "desc"]).default("desc"),
+      }).strict(),
+      annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const result = await client.callMethod("erpnext.stock.dashboard.item_dashboard.get_data", params);
+        return { content: [{ type: "text", text: truncateResponse(JSON.stringify(result, null, 2)) }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+
+  // ─── 44. Get Batch Qty ─────────────────────────────────
+  server.registerTool(
+    "erpnext_get_batch_qty",
+    {
+      title: "Get Batch Quantity",
+      description: `Get available quantity for a specific batch in a warehouse.`,
+      inputSchema: z.object({
+        batch_no: z.string(),
+        warehouse: z.string(),
+        item_code: z.string().optional(),
+      }).strict(),
+      annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const result = await client.callMethod("erpnext.stock.doctype.batch.batch.get_batch_qty", params);
+        return { content: [{ type: "text", text: JSON.stringify(result, null, 2) }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+
+  // ─── 45. Make Sales Invoice from DN ────────────────────
+  server.registerTool(
+    "erpnext_make_sales_invoice_from_dn",
+    {
+      title: "Make Sales Invoice from Delivery Note",
+      description: `Create a Sales Invoice from a Delivery Note.`,
+      inputSchema: z.object({ source_name: z.string() }).strict(),
+      annotations: { readOnlyHint: false, destructiveHint: false, idempotentHint: false, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const result = await client.callMethod(
+          "erpnext.stock.doctype.delivery_note.delivery_note.make_sales_invoice",
+          { source_name: params.source_name }
+        );
+        return { content: [{ type: "text", text: truncateResponse(JSON.stringify(result, null, 2)) }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+
+  // ─── 46. Make Purchase Invoice from PR ─────────────────
+  server.registerTool(
+    "erpnext_make_purchase_invoice_from_pr",
+    {
+      title: "Make Purchase Invoice from Purchase Receipt",
+      description: `Create a Purchase Invoice from a Purchase Receipt.`,
+      inputSchema: z.object({ source_name: z.string() }).strict(),
+      annotations: { readOnlyHint: false, destructiveHint: false, idempotentHint: false, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const result = await client.callMethod(
+          "erpnext.stock.doctype.purchase_receipt.purchase_receipt.make_purchase_invoice",
+          { source_name: params.source_name }
+        );
+        return { content: [{ type: "text", text: truncateResponse(JSON.stringify(result, null, 2)) }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+
+  // ─── 47. Warehouse Capacity Dashboard ──────────────────
+  server.registerTool(
+    "erpnext_warehouse_capacity",
+    {
+      title: "Get Warehouse Capacity Dashboard",
+      description: `Get warehouse capacity utilization data.`,
+      inputSchema: z.object({
+        warehouse: z.string().optional(),
+        item_code: z.string().optional(),
+        parent_warehouse: z.string().optional(),
+        start: z.number().default(0),
+      }).strict(),
+      annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const result = await client.callMethod(
+          "erpnext.stock.dashboard.warehouse_capacity_dashboard.get_data",
+          params
+        );
+        return { content: [{ type: "text", text: truncateResponse(JSON.stringify(result, null, 2)) }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+
+  // ─── 48. Get Stock Reconciliation Items ────────────────
+  server.registerTool(
+    "erpnext_get_stock_reconciliation_items",
+    {
+      title: "Get Items for Stock Reconciliation",
+      description: `Get items and their current stock for stock reconciliation.`,
+      inputSchema: z.object({
+        warehouse: z.string(),
+        posting_date: z.string(),
+        posting_time: z.string().optional(),
+        company: z.string(),
+      }).strict(),
+      annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const result = await client.callMethod(
+          "erpnext.stock.doctype.stock_reconciliation.stock_reconciliation.get_items",
+          params
+        );
+        return { content: [{ type: "text", text: truncateResponse(JSON.stringify(result, null, 2)) }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+
+  // ─── 49. Get Valuation Rate ────────────────────────────
+  server.registerTool(
+    "erpnext_get_valuation_rate",
+    {
+      title: "Get Item Valuation Rate",
+      description: `Get the valuation rate for an item.`,
+      inputSchema: z.object({
+        item_code: z.string(),
+        company: z.string(),
+        warehouse: z.string().optional(),
+      }).strict(),
+      annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const result = await client.callMethod(
+          "erpnext.stock.get_item_details.get_valuation_rate",
+          params
+        );
+        return { content: [{ type: "text", text: `Valuation rate for ${params.item_code}: ${result}` }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+
+  // ─── 50. Get Conversion Factor ─────────────────────────
+  server.registerTool(
+    "erpnext_get_conversion_factor",
+    {
+      title: "Get UOM Conversion Factor",
+      description: `Get the conversion factor between a UOM and the stock UOM for an item.`,
+      inputSchema: z.object({
+        item_code: z.string(),
+        uom: z.string(),
+      }).strict(),
+      annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true, openWorldHint: true },
+    },
+    async (params) => {
+      try {
+        const result = await client.callMethod("erpnext.stock.get_item_details.get_conversion_factor", params);
+        return { content: [{ type: "text", text: JSON.stringify(result, null, 2) }] };
+      } catch (error) {
+        return { isError: true, content: [{ type: "text", text: `Error: ${(error as Error).message}` }] };
+      }
+    }
+  );
+}