diff --git a/packages/types/src/experiment.ts b/packages/types/src/experiment.ts
index cc0aabd6f6b..f6f701a25d3 100644
--- a/packages/types/src/experiment.ts
+++ b/packages/types/src/experiment.ts
@@ -13,6 +13,7 @@ export const experimentIds = [
 	"imageGeneration",
 	"runSlashCommand",
 	"multipleNativeToolCalls",
+	"customTools",
 ] as const
 
 export const experimentIdsSchema = z.enum(experimentIds)
@@ -30,6 +31,7 @@ export const experimentsSchema = z.object({
 	imageGeneration: z.boolean().optional(),
 	runSlashCommand: z.boolean().optional(),
 	multipleNativeToolCalls: z.boolean().optional(),
+	customTools: z.boolean().optional(),
 })
 
 export type Experiments = z.infer<typeof experimentsSchema>
diff --git a/src/core/assistant-message/presentAssistantMessage.ts b/src/core/assistant-message/presentAssistantMessage.ts
index 15f298726a4..c1876b8cd08 100644
--- a/src/core/assistant-message/presentAssistantMessage.ts
+++ b/src/core/assistant-message/presentAssistantMessage.ts
@@ -1081,17 +1081,15 @@ export async function presentAssistantMessage(cline: Task) {
 						break
 					}
 
-					const customTool = customToolRegistry.get(block.name)
+					const customTool = stateExperiments?.customTools ? customToolRegistry.get(block.name) : undefined
 
 					if (customTool) {
 						try {
-							console.log(`executing customTool -> ${JSON.stringify(customTool, null, 2)}`)
 							let customToolArgs
 
 							if (customTool.parameters) {
 								try {
 									customToolArgs = customTool.parameters.parse(block.nativeArgs || block.params || {})
-									console.log(`customToolArgs -> ${JSON.stringify(customToolArgs, null, 2)}`)
 								} catch (parseParamsError) {
 									const message = `Custom tool "${block.name}" argument validation failed: ${parseParamsError.message}`
 									console.error(message)
@@ -1102,13 +1100,15 @@ export async function presentAssistantMessage(cline: Task) {
 								}
 							}
 
-							console.log(`${customTool.name}.execute() -> ${JSON.stringify(customToolArgs, null, 2)}`)
-
 							const result = await customTool.execute(customToolArgs, {
 								mode: mode ?? defaultModeSlug,
 								task: cline,
 							})
 
+							console.log(
+								`${customTool.name}.execute(): ${JSON.stringify(customToolArgs)} -> ${JSON.stringify(result)}`,
+							)
+
 							pushToolResult(result)
 							cline.consecutiveMistakeCount = 0
 						} catch (executionError: any) {
diff --git a/src/core/prompts/system.ts b/src/core/prompts/system.ts
index fe2d98504ce..b6543950378 100644
--- a/src/core/prompts/system.ts
+++ b/src/core/prompts/system.ts
@@ -124,7 +124,7 @@ async function generatePrompt(
 
 	let customToolsSection = ""
 
-	if (!isNativeProtocol(effectiveProtocol)) {
+	if (experiments?.customTools && !isNativeProtocol(effectiveProtocol)) {
 		const customTools = customToolRegistry.getAllSerialized()
 
 		if (customTools.length > 0) {
diff --git a/src/core/task/build-tools.ts b/src/core/task/build-tools.ts
index b7861be3270..b636052341f 100644
--- a/src/core/task/build-tools.ts
+++ b/src/core/task/build-tools.ts
@@ -79,13 +79,16 @@ export async function buildNativeToolsArray(options: BuildToolsOptions): Promise
 	const mcpTools = getMcpServerTools(mcpHub)
 	const filteredMcpTools = filterMcpToolsForMode(mcpTools, mode, customModes, experiments)
 
-	// Add custom tools if they are available.
-	await customToolRegistry.loadFromDirectoryIfStale(path.join(cwd, ".roo", "tools"))
-	const customTools = customToolRegistry.getAllSerialized()
+	// Add custom tools if they are available and the experiment is enabled.
 	let nativeCustomTools: OpenAI.Chat.ChatCompletionFunctionTool[] = []
 
-	if (customTools.length > 0) {
-		nativeCustomTools = customTools.map(formatNative)
+	if (experiments?.customTools) {
+		await customToolRegistry.loadFromDirectoryIfStale(path.join(cwd, ".roo", "tools"))
+		const customTools = customToolRegistry.getAllSerialized()
+
+		if (customTools.length > 0) {
+			nativeCustomTools = customTools.map(formatNative)
+		}
 	}
 
 	return [...filteredNativeTools, ...filteredMcpTools, ...nativeCustomTools]
diff --git a/src/core/tools/validateToolUse.ts b/src/core/tools/validateToolUse.ts
index de814f0b3c9..751d164fd26 100644
--- a/src/core/tools/validateToolUse.ts
+++ b/src/core/tools/validateToolUse.ts
@@ -11,13 +11,13 @@ import { TOOL_GROUPS, ALWAYS_AVAILABLE_TOOLS } from "../../shared/tools"
  * Note: This does NOT check if the tool is allowed for a specific mode,
  * only that the tool actually exists.
  */
-export function isValidToolName(toolName: string): toolName is ToolName {
+export function isValidToolName(toolName: string, experiments?: Record<string, boolean>): toolName is ToolName {
 	// Check if it's a valid static tool
 	if ((validToolNames as readonly string[]).includes(toolName)) {
 		return true
 	}
 
-	if (customToolRegistry.has(toolName)) {
+	if (experiments?.customTools && customToolRegistry.has(toolName)) {
 		return true
 	}
 
@@ -40,7 +40,7 @@ export function validateToolUse(
 ): void {
 	// First, check if the tool name is actually a valid/known tool
 	// This catches completely invalid tool names like "edit_file" that don't exist
-	if (!isValidToolName(toolName)) {
+	if (!isValidToolName(toolName, experiments)) {
 		throw new Error(
 			`Unknown tool "${toolName}". This tool does not exist. Please use one of the available tools: ${validToolNames.join(", ")}.`,
 		)
@@ -94,7 +94,7 @@ export function isToolAllowedForMode(
 
 	// For now, allow all custom tools in any mode.
 	// As a follow-up we should expand the custom tool definition to include mode restrictions.
-	if (customToolRegistry.has(tool)) {
+	if (experiments?.customTools && customToolRegistry.has(tool)) {
 		return true
 	}
 
diff --git a/src/core/webview/webviewMessageHandler.ts b/src/core/webview/webviewMessageHandler.ts
index aa72ee253f5..e042c5c1c67 100644
--- a/src/core/webview/webviewMessageHandler.ts
+++ b/src/core/webview/webviewMessageHandler.ts
@@ -16,6 +16,7 @@ import {
 	Experiments,
 	ExperimentId,
 } from "@roo-code/types"
+import { customToolRegistry } from "@roo-code/core"
 import { CloudService } from "@roo-code/cloud"
 import { TelemetryService } from "@roo-code/telemetry"
 
@@ -1725,6 +1726,24 @@ export const webviewMessageHandler = async (
 			}
 			break
 		}
+		case "refreshCustomTools": {
+			try {
+				await customToolRegistry.loadFromDirectory(path.join(getCurrentCwd(), ".roo", "tools"))
+
+				await provider.postMessageToWebview({
+					type: "customToolsResult",
+					tools: customToolRegistry.getAllSerialized(),
+				})
+			} catch (error) {
+				await provider.postMessageToWebview({
+					type: "customToolsResult",
+					tools: [],
+					error: error instanceof Error ? error.message : String(error),
+				})
+			}
+
+			break
+		}
 		case "saveApiConfiguration":
 			if (message.text && message.apiConfiguration) {
 				try {
diff --git a/src/shared/ExtensionMessage.ts b/src/shared/ExtensionMessage.ts
index 20bb5759645..093485fa3ee 100644
--- a/src/shared/ExtensionMessage.ts
+++ b/src/shared/ExtensionMessage.ts
@@ -14,6 +14,7 @@ import type {
 	OrganizationAllowList,
 	ShareVisibility,
 	QueuedMessage,
+	SerializedCustomToolDefinition,
 } from "@roo-code/types"
 
 import { GitCommit } from "../utils/git"
@@ -133,6 +134,7 @@ export interface ExtensionMessage {
 		| "browserSessionUpdate"
 		| "browserSessionNavigate"
 		| "claudeCodeRateLimits"
+		| "customToolsResult"
 	text?: string
 	payload?: any // Add a generic payload for now, can refine later
 	// Checkpoint warning message
@@ -218,6 +220,7 @@ export interface ExtensionMessage {
 	browserSessionMessages?: ClineMessage[] // For browser session panel updates
 	isBrowserSessionActive?: boolean // For browser session panel updates
 	stepIndex?: number // For browserSessionNavigate: the target step index to display
+	tools?: SerializedCustomToolDefinition[] // For customToolsResult
 }
 
 export type ExtensionState = Pick<
diff --git a/src/shared/WebviewMessage.ts b/src/shared/WebviewMessage.ts
index 970208a2a3e..6c878159940 100644
--- a/src/shared/WebviewMessage.ts
+++ b/src/shared/WebviewMessage.ts
@@ -180,6 +180,7 @@ export interface WebviewMessage {
 		| "openDebugUiHistory"
 		| "downloadErrorDiagnostics"
 		| "requestClaudeCodeRateLimits"
+		| "refreshCustomTools"
 	text?: string
 	editedMessageContent?: string
 	tab?: "settings" | "history" | "mcp" | "modes" | "chat" | "marketplace" | "cloud"
diff --git a/src/shared/__tests__/experiments.spec.ts b/src/shared/__tests__/experiments.spec.ts
index 23116b19b20..0b43302611b 100644
--- a/src/shared/__tests__/experiments.spec.ts
+++ b/src/shared/__tests__/experiments.spec.ts
@@ -32,6 +32,7 @@ describe("experiments", () => {
 				imageGeneration: false,
 				runSlashCommand: false,
 				multipleNativeToolCalls: false,
+				customTools: false,
 			}
 			expect(Experiments.isEnabled(experiments, EXPERIMENT_IDS.POWER_STEERING)).toBe(false)
 		})
@@ -44,6 +45,7 @@ describe("experiments", () => {
 				imageGeneration: false,
 				runSlashCommand: false,
 				multipleNativeToolCalls: false,
+				customTools: false,
 			}
 			expect(Experiments.isEnabled(experiments, EXPERIMENT_IDS.POWER_STEERING)).toBe(true)
 		})
@@ -56,6 +58,7 @@ describe("experiments", () => {
 				imageGeneration: false,
 				runSlashCommand: false,
 				multipleNativeToolCalls: false,
+				customTools: false,
 			}
 			expect(Experiments.isEnabled(experiments, EXPERIMENT_IDS.POWER_STEERING)).toBe(false)
 		})
diff --git a/src/shared/experiments.ts b/src/shared/experiments.ts
index 0b11edfcdf0..ad3aeca8634 100644
--- a/src/shared/experiments.ts
+++ b/src/shared/experiments.ts
@@ -7,6 +7,7 @@ export const EXPERIMENT_IDS = {
 	IMAGE_GENERATION: "imageGeneration",
 	RUN_SLASH_COMMAND: "runSlashCommand",
 	MULTIPLE_NATIVE_TOOL_CALLS: "multipleNativeToolCalls",
+	CUSTOM_TOOLS: "customTools",
 } as const satisfies Record<string, ExperimentId>
 
 type _AssertExperimentIds = AssertEqual<Equals<ExperimentId, Values<typeof EXPERIMENT_IDS>>>
@@ -24,6 +25,7 @@ export const experimentConfigsMap: Record<ExperimentKey, ExperimentConfig> = {
 	IMAGE_GENERATION: { enabled: false },
 	RUN_SLASH_COMMAND: { enabled: false },
 	MULTIPLE_NATIVE_TOOL_CALLS: { enabled: false },
+	CUSTOM_TOOLS: { enabled: false },
 }
 
 export const experimentDefault = Object.fromEntries(
diff --git a/webview-ui/src/components/settings/CustomToolsSettings.tsx b/webview-ui/src/components/settings/CustomToolsSettings.tsx
new file mode 100644
index 00000000000..176272734cd
--- /dev/null
+++ b/webview-ui/src/components/settings/CustomToolsSettings.tsx
@@ -0,0 +1,173 @@
+import { useState, useEffect, useCallback, useMemo } from "react"
+import { useEvent } from "react-use"
+import { VSCodeCheckbox } from "@vscode/webview-ui-toolkit/react"
+import { RefreshCw, Loader2 } from "lucide-react"
+
+import type { SerializedCustomToolDefinition } from "@roo-code/types"
+
+import { useAppTranslation } from "@/i18n/TranslationContext"
+
+import { vscode } from "@/utils/vscode"
+
+import { Button } from "@/components/ui"
+
+interface ToolParameter {
+	name: string
+	type: string
+	description?: string
+	required: boolean
+}
+
+interface ProcessedTool {
+	name: string
+	description: string
+	parameters: ToolParameter[]
+}
+
+interface CustomToolsSettingsProps {
+	enabled: boolean
+	onChange: (enabled: boolean) => void
+}
+
+export const CustomToolsSettings = ({ enabled, onChange }: CustomToolsSettingsProps) => {
+	const { t } = useAppTranslation()
+	const [tools, setTools] = useState<SerializedCustomToolDefinition[]>([])
+	const [isRefreshing, setIsRefreshing] = useState(false)
+	const [refreshError, setRefreshError] = useState<string | null>(null)
+
+	useEffect(() => {
+		if (enabled) {
+			vscode.postMessage({ type: "refreshCustomTools" })
+		} else {
+			setTools([])
+		}
+	}, [enabled])
+
+	useEvent("message", (event: MessageEvent) => {
+		const message = event.data
+
+		if (message.type === "customToolsResult") {
+			setTools(message.tools || [])
+			setIsRefreshing(false)
+			setRefreshError(message.error ?? null)
+		}
+	})
+
+	const onRefresh = useCallback(() => {
+		setIsRefreshing(true)
+		setRefreshError(null)
+		vscode.postMessage({ type: "refreshCustomTools" })
+	}, [])
+
+	const processedTools = useMemo<ProcessedTool[]>(
+		() =>
+			tools.map((tool) => {
+				const params = tool.parameters
+				const properties = (params?.properties ?? {}) as Record<string, { type?: string; description?: string }>
+				const required = (params?.required as string[] | undefined) ?? []
+
+				return {
+					name: tool.name,
+					description: tool.description,
+					parameters: Object.entries(properties).map(([name, def]) => ({
+						name,
+						type: def.type ?? "any",
+						description: def.description,
+						required: required.includes(name),
+					})),
+				}
+			}),
+		[tools],
+	)
+
+	return (
+		<div className="space-y-4">
+			<div>
+				<div className="flex items-center gap-2">
+					<VSCodeCheckbox checked={enabled} onChange={(e: any) => onChange(e.target.checked)}>
+						<span className="font-medium">{t("settings:experimental.CUSTOM_TOOLS.name")}</span>
+					</VSCodeCheckbox>
+				</div>
+				<p className="text-vscode-descriptionForeground text-sm mt-0">
+					{t("settings:experimental.CUSTOM_TOOLS.description")}
+				</p>
+			</div>
+
+			{enabled && (
+				<div className="ml-2 space-y-3">
+					<div className="flex items-center justify-between gap-4">
+						<label className="block font-medium">
+							{t("settings:experimental.CUSTOM_TOOLS.toolsHeader")}
+						</label>
+						<Button variant="outline" onClick={onRefresh} disabled={isRefreshing}>
+							<div className="flex items-center gap-2">
+								{isRefreshing ? (
+									<Loader2 className="w-4 h-4 animate-spin" />
+								) : (
+									<RefreshCw className="w-4 h-4" />
+								)}
+								{isRefreshing
+									? t("settings:experimental.CUSTOM_TOOLS.refreshing")
+									: t("settings:experimental.CUSTOM_TOOLS.refreshButton")}
+							</div>
+						</Button>
+					</div>
+
+					{refreshError && (
+						<div className="p-2 bg-vscode-inputValidation-errorBackground text-vscode-errorForeground rounded text-sm border border-vscode-inputValidation-errorBorder">
+							{t("settings:experimental.CUSTOM_TOOLS.refreshError")}: {refreshError}
+						</div>
+					)}
+
+					{processedTools.length === 0 ? (
+						<p className="text-vscode-descriptionForeground text-sm italic">
+							{t("settings:experimental.CUSTOM_TOOLS.noTools")}
+						</p>
+					) : (
+						<div className="space-y-2">
+							{processedTools.map((tool) => (
+								<div
+									key={tool.name}
+									className="p-3 bg-vscode-editor-background border border-vscode-panel-border rounded">
+									<div className="font-medium text-vscode-foreground">{tool.name}</div>
+									<p className="text-vscode-descriptionForeground text-sm mt-1">{tool.description}</p>
+									{tool.parameters.length > 0 && (
+										<div className="mt-3">
+											<div className="text-xs font-medium text-vscode-foreground mb-2">
+												{t("settings:experimental.CUSTOM_TOOLS.toolParameters")}:
+											</div>
+											<div className="space-y-1">
+												{tool.parameters.map((param) => (
+													<div
+														key={param.name}
+														className="flex items-start gap-2 text-xs pl-2 py-1 border-l-2 border-vscode-panel-border">
+														<code className="text-vscode-textLink-foreground font-mono">
+															{param.name}
+														</code>
+														<span className="text-vscode-descriptionForeground">
+															({param.type})
+														</span>
+														{param.required && (
+															<span className="text-vscode-errorForeground text-[10px] uppercase">
+																required
+															</span>
+														)}
+														{param.description && (
+															<span className="text-vscode-descriptionForeground">
+																— {param.description}
+															</span>
+														)}
+													</div>
+												))}
+											</div>
+										</div>
+									)}
+								</div>
+							))}
+						</div>
+					)}
+				</div>
+			)}
+		</div>
+	)
+}
diff --git a/webview-ui/src/components/settings/ExperimentalSettings.tsx b/webview-ui/src/components/settings/ExperimentalSettings.tsx
index a1719a954c4..982de949098 100644
--- a/webview-ui/src/components/settings/ExperimentalSettings.tsx
+++ b/webview-ui/src/components/settings/ExperimentalSettings.tsx
@@ -13,6 +13,7 @@ import { SectionHeader } from "./SectionHeader"
 import { Section } from "./Section"
 import { ExperimentalFeature } from "./ExperimentalFeature"
 import { ImageGenerationSettings } from "./ImageGenerationSettings"
+import { CustomToolsSettings } from "./CustomToolsSettings"
 
 type ExperimentalSettingsProps = HTMLAttributes<HTMLDivElement> & {
 	experiments: Experiments
@@ -92,6 +93,15 @@ export const ExperimentalSettings = ({
 								/>
 							)
 						}
+						if (config[0] === "CUSTOM_TOOLS") {
+							return (
+								<CustomToolsSettings
+									key={config[0]}
+									enabled={experiments[EXPERIMENT_IDS.CUSTOM_TOOLS] ?? false}
+									onChange={(enabled) => setExperimentEnabled(EXPERIMENT_IDS.CUSTOM_TOOLS, enabled)}
+								/>
+							)
+						}
 						return (
 							<ExperimentalFeature
 								key={config[0]}
diff --git a/webview-ui/src/context/__tests__/ExtensionStateContext.spec.tsx b/webview-ui/src/context/__tests__/ExtensionStateContext.spec.tsx
index 15c87d03c4d..e1639fb07b3 100644
--- a/webview-ui/src/context/__tests__/ExtensionStateContext.spec.tsx
+++ b/webview-ui/src/context/__tests__/ExtensionStateContext.spec.tsx
@@ -240,6 +240,7 @@ describe("mergeExtensionState", () => {
 				runSlashCommand: false,
 				nativeToolCalling: false,
 				multipleNativeToolCalls: false,
+				customTools: false,
 			} as Record<ExperimentId, boolean>,
 			checkpointTimeout: DEFAULT_CHECKPOINT_TIMEOUT_SECONDS + 5,
 		}
@@ -263,6 +264,7 @@ describe("mergeExtensionState", () => {
 			runSlashCommand: false,
 			nativeToolCalling: false,
 			multipleNativeToolCalls: false,
+			customTools: false,
 		})
 	})
 })
diff --git a/webview-ui/src/i18n/locales/ca/settings.json b/webview-ui/src/i18n/locales/ca/settings.json
index 20b1e0d510f..abcfb3d4c4a 100644
--- a/webview-ui/src/i18n/locales/ca/settings.json
+++ b/webview-ui/src/i18n/locales/ca/settings.json
@@ -824,6 +824,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "Crides paral·leles a eines",
 			"description": "Quan està activat, el protocol natiu pot executar múltiples eines en un sol torn de missatge de l'assistent."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "Habilitar eines personalitzades",
+			"description": "Quan està habilitat, Roo pot carregar i utilitzar eines TypeScript/JavaScript personalitzades des del directori .roo/tools del vostre projecte.",
+			"toolsHeader": "Eines personalitzades disponibles",
+			"noTools": "No s'han carregat eines personalitzades. Afegiu fitxers .ts o .js al directori .roo/tools del vostre projecte.",
+			"refreshButton": "Actualitzar",
+			"refreshing": "Actualitzant...",
+			"refreshSuccess": "Eines actualitzades correctament",
+			"refreshError": "Error en actualitzar les eines",
+			"toolParameters": "Paràmetres"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/de/settings.json b/webview-ui/src/i18n/locales/de/settings.json
index d68f7e7d32a..7d9e211b1c6 100644
--- a/webview-ui/src/i18n/locales/de/settings.json
+++ b/webview-ui/src/i18n/locales/de/settings.json
@@ -824,6 +824,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "Parallele Tool-Aufrufe",
 			"description": "Wenn aktiviert, kann das native Protokoll mehrere Tools in einer einzigen Assistenten-Nachrichtenrunde ausführen."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "Benutzerdefinierte Tools aktivieren",
+			"description": "Wenn aktiviert, kann Roo benutzerdefinierte TypeScript/JavaScript-Tools aus dem .roo/tools-Verzeichnis deines Projekts laden und verwenden.",
+			"toolsHeader": "Verfügbare benutzerdefinierte Tools",
+			"noTools": "Keine benutzerdefinierten Tools geladen. Füge .ts- oder .js-Dateien zum .roo/tools-Verzeichnis deines Projekts hinzu.",
+			"refreshButton": "Aktualisieren",
+			"refreshing": "Aktualisieren...",
+			"refreshSuccess": "Tools erfolgreich aktualisiert",
+			"refreshError": "Fehler beim Aktualisieren der Tools",
+			"toolParameters": "Parameter"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/en/settings.json b/webview-ui/src/i18n/locales/en/settings.json
index 2396bded682..32a401cd0d6 100644
--- a/webview-ui/src/i18n/locales/en/settings.json
+++ b/webview-ui/src/i18n/locales/en/settings.json
@@ -833,6 +833,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "Parallel tool calls",
 			"description": "When enabled, the native protocol can execute multiple tools in a single assistant message turn."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "Enable custom tools",
+			"description": "When enabled, Roo can load and use custom TypeScript/JavaScript tools from your project's .roo/tools directory. Note: these tools will automatically be auto-approved.",
+			"toolsHeader": "Available Custom Tools",
+			"noTools": "No custom tools loaded. Add .ts or .js files to your project's .roo/tools directory.",
+			"refreshButton": "Refresh",
+			"refreshing": "Refreshing...",
+			"refreshSuccess": "Tools refreshed successfully",
+			"refreshError": "Failed to refresh tools",
+			"toolParameters": "Parameters"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/es/settings.json b/webview-ui/src/i18n/locales/es/settings.json
index 6c03855056f..3a83c21a23e 100644
--- a/webview-ui/src/i18n/locales/es/settings.json
+++ b/webview-ui/src/i18n/locales/es/settings.json
@@ -824,6 +824,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "Llamadas paralelas a herramientas",
 			"description": "Cuando está habilitado, el protocolo nativo puede ejecutar múltiples herramientas en un solo turno de mensaje del asistente."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "Habilitar herramientas personalizadas",
+			"description": "Cuando está habilitado, Roo puede cargar y usar herramientas TypeScript/JavaScript personalizadas desde el directorio .roo/tools de tu proyecto.",
+			"toolsHeader": "Herramientas personalizadas disponibles",
+			"noTools": "No hay herramientas personalizadas cargadas. Añade archivos .ts o .js al directorio .roo/tools de tu proyecto.",
+			"refreshButton": "Actualizar",
+			"refreshing": "Actualizando...",
+			"refreshSuccess": "Herramientas actualizadas correctamente",
+			"refreshError": "Error al actualizar las herramientas",
+			"toolParameters": "Parámetros"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/fr/settings.json b/webview-ui/src/i18n/locales/fr/settings.json
index 9fb20036865..99f0406f66b 100644
--- a/webview-ui/src/i18n/locales/fr/settings.json
+++ b/webview-ui/src/i18n/locales/fr/settings.json
@@ -824,6 +824,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "Appels d'outils parallèles",
 			"description": "Lorsqu'activé, le protocole natif peut exécuter plusieurs outils en un seul tour de message d'assistant."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "Activer les outils personnalisés",
+			"description": "Lorsqu'activé, Roo peut charger et utiliser des outils TypeScript/JavaScript personnalisés à partir du répertoire .roo/tools de votre projet.",
+			"toolsHeader": "Outils personnalisés disponibles",
+			"noTools": "Aucun outil personnalisé chargé. Ajoutez des fichiers .ts ou .js au répertoire .roo/tools de votre projet.",
+			"refreshButton": "Actualiser",
+			"refreshing": "Actualisation...",
+			"refreshSuccess": "Outils actualisés avec succès",
+			"refreshError": "Échec de l'actualisation des outils",
+			"toolParameters": "Paramètres"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/hi/settings.json b/webview-ui/src/i18n/locales/hi/settings.json
index ee4f55d243a..65cbee91caf 100644
--- a/webview-ui/src/i18n/locales/hi/settings.json
+++ b/webview-ui/src/i18n/locales/hi/settings.json
@@ -825,6 +825,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "समानांतर टूल कॉल",
 			"description": "सक्षम होने पर, नेटिव प्रोटोकॉल एकल सहायक संदेश टर्न में एकाधिक टूल निष्पादित कर सकता है।"
+		},
+		"CUSTOM_TOOLS": {
+			"name": "कस्टम टूल्स सक्षम करें",
+			"description": "सक्षम होने पर, Roo आपके प्रोजेक्ट की .roo/tools निर्देशिका से कस्टम TypeScript/JavaScript टूल्स लोड और उपयोग कर सकता है।",
+			"toolsHeader": "उपलब्ध कस्टम टूल्स",
+			"noTools": "कोई कस्टम टूल लोड नहीं हुआ। अपने प्रोजेक्ट की .roo/tools निर्देशिका में .ts या .js फ़ाइलें जोड़ें।",
+			"refreshButton": "रिफ्रेश करें",
+			"refreshing": "रिफ्रेश हो रहा है...",
+			"refreshSuccess": "टूल्स सफलतापूर्वक रिफ्रेश हुए",
+			"refreshError": "टूल्स रिफ्रेश करने में विफल",
+			"toolParameters": "पैरामीटर्स"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/id/settings.json b/webview-ui/src/i18n/locales/id/settings.json
index 79bf7ba7bff..8cfcbb8f1c7 100644
--- a/webview-ui/src/i18n/locales/id/settings.json
+++ b/webview-ui/src/i18n/locales/id/settings.json
@@ -854,6 +854,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "Panggilan tool paralel",
 			"description": "Ketika diaktifkan, protokol native dapat mengeksekusi beberapa tool dalam satu giliran pesan asisten."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "Aktifkan tool kustom",
+			"description": "Ketika diaktifkan, Roo dapat memuat dan menggunakan tool TypeScript/JavaScript kustom dari direktori .roo/tools proyek Anda.",
+			"toolsHeader": "Tool Kustom yang Tersedia",
+			"noTools": "Tidak ada tool kustom yang dimuat. Tambahkan file .ts atau .js ke direktori .roo/tools proyek Anda.",
+			"refreshButton": "Refresh",
+			"refreshing": "Merefresh...",
+			"refreshSuccess": "Tool berhasil direfresh",
+			"refreshError": "Gagal merefresh tool",
+			"toolParameters": "Parameter"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/it/settings.json b/webview-ui/src/i18n/locales/it/settings.json
index a7db28f7513..6967ba6d0c9 100644
--- a/webview-ui/src/i18n/locales/it/settings.json
+++ b/webview-ui/src/i18n/locales/it/settings.json
@@ -825,6 +825,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "Chiamate parallele agli strumenti",
 			"description": "Quando abilitato, il protocollo nativo può eseguire più strumenti in un singolo turno di messaggio dell'assistente."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "Abilita strumenti personalizzati",
+			"description": "Quando abilitato, Roo può caricare e utilizzare strumenti TypeScript/JavaScript personalizzati dalla directory .roo/tools del tuo progetto.",
+			"toolsHeader": "Strumenti personalizzati disponibili",
+			"noTools": "Nessuno strumento personalizzato caricato. Aggiungi file .ts o .js alla directory .roo/tools del tuo progetto.",
+			"refreshButton": "Aggiorna",
+			"refreshing": "Aggiornamento...",
+			"refreshSuccess": "Strumenti aggiornati con successo",
+			"refreshError": "Impossibile aggiornare gli strumenti",
+			"toolParameters": "Parametri"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/ja/settings.json b/webview-ui/src/i18n/locales/ja/settings.json
index b80892cd111..36fc3e3bf72 100644
--- a/webview-ui/src/i18n/locales/ja/settings.json
+++ b/webview-ui/src/i18n/locales/ja/settings.json
@@ -825,6 +825,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "並列ツール呼び出し",
 			"description": "有効にすると、ネイティブプロトコルは単一のアシスタントメッセージターンで複数のツールを実行できます。"
+		},
+		"CUSTOM_TOOLS": {
+			"name": "カスタムツールを有効化",
+			"description": "有効にすると、Rooはプロジェクトの.roo/toolsディレクトリからカスタムTypeScript/JavaScriptツールを読み込んで使用できます。",
+			"toolsHeader": "利用可能なカスタムツール",
+			"noTools": "カスタムツールが読み込まれていません。プロジェクトの.roo/toolsディレクトリに.tsまたは.jsファイルを追加してください。",
+			"refreshButton": "更新",
+			"refreshing": "更新中...",
+			"refreshSuccess": "ツールが正常に更新されました",
+			"refreshError": "ツールの更新に失敗しました",
+			"toolParameters": "パラメーター"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/ko/settings.json b/webview-ui/src/i18n/locales/ko/settings.json
index 85ab220dfea..32c5a4df84f 100644
--- a/webview-ui/src/i18n/locales/ko/settings.json
+++ b/webview-ui/src/i18n/locales/ko/settings.json
@@ -825,6 +825,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "병렬 도구 호출",
 			"description": "활성화되면 네이티브 프로토콜이 단일 어시스턴트 메시지 턴에서 여러 도구를 실행할 수 있습니다."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "사용자 정의 도구 활성화",
+			"description": "활성화하면 Roo가 프로젝트의 .roo/tools 디렉터리에서 사용자 정의 TypeScript/JavaScript 도구를 로드하고 사용할 수 있습니다.",
+			"toolsHeader": "사용 가능한 사용자 정의 도구",
+			"noTools": "로드된 사용자 정의 도구가 없습니다. 프로젝트의 .roo/tools 디렉터리에 .ts 또는 .js 파일을 추가하세요.",
+			"refreshButton": "새로고침",
+			"refreshing": "새로고침 중...",
+			"refreshSuccess": "도구가 성공적으로 새로고침되었습니다",
+			"refreshError": "도구 새로고침에 실패했습니다",
+			"toolParameters": "매개변수"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/nl/settings.json b/webview-ui/src/i18n/locales/nl/settings.json
index be2f2233628..fe93eea35c1 100644
--- a/webview-ui/src/i18n/locales/nl/settings.json
+++ b/webview-ui/src/i18n/locales/nl/settings.json
@@ -825,6 +825,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "Parallelle tool-aanroepen",
 			"description": "Wanneer ingeschakeld, kan het native protocol meerdere tools uitvoeren in één enkele assistent-berichtbeurt."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "Aangepaste tools inschakelen",
+			"description": "Indien ingeschakeld kan Roo aangepaste TypeScript/JavaScript-tools laden en gebruiken uit de map .roo/tools van je project.",
+			"toolsHeader": "Beschikbare aangepaste tools",
+			"noTools": "Geen aangepaste tools geladen. Voeg .ts- of .js-bestanden toe aan de map .roo/tools van je project.",
+			"refreshButton": "Vernieuwen",
+			"refreshing": "Vernieuwen...",
+			"refreshSuccess": "Tools succesvol vernieuwd",
+			"refreshError": "Fout bij vernieuwen van tools",
+			"toolParameters": "Parameters"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/pl/settings.json b/webview-ui/src/i18n/locales/pl/settings.json
index 137bdabf3aa..c1563f2e23f 100644
--- a/webview-ui/src/i18n/locales/pl/settings.json
+++ b/webview-ui/src/i18n/locales/pl/settings.json
@@ -825,6 +825,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "Równoległe wywołania narzędzi",
 			"description": "Po włączeniu protokół natywny może wykonywać wiele narzędzi w jednej turze wiadomości asystenta."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "Włącz niestandardowe narzędzia",
+			"description": "Gdy włączone, Roo może ładować i używać niestandardowych narzędzi TypeScript/JavaScript z katalogu .roo/tools Twojego projektu.",
+			"toolsHeader": "Dostępne niestandardowe narzędzia",
+			"noTools": "Nie załadowano niestandardowych narzędzi. Dodaj pliki .ts lub .js do katalogu .roo/tools swojego projektu.",
+			"refreshButton": "Odśwież",
+			"refreshing": "Odświeżanie...",
+			"refreshSuccess": "Narzędzia odświeżone pomyślnie",
+			"refreshError": "Nie udało się odświeżyć narzędzi",
+			"toolParameters": "Parametry"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/pt-BR/settings.json b/webview-ui/src/i18n/locales/pt-BR/settings.json
index ea459ffdeb0..4df36d14dff 100644
--- a/webview-ui/src/i18n/locales/pt-BR/settings.json
+++ b/webview-ui/src/i18n/locales/pt-BR/settings.json
@@ -825,6 +825,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "Chamadas paralelas de ferramentas",
 			"description": "Quando habilitado, o protocolo nativo pode executar múltiplas ferramentas em um único turno de mensagem do assistente."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "Ativar ferramentas personalizadas",
+			"description": "Quando habilitado, o Roo pode carregar e usar ferramentas TypeScript/JavaScript personalizadas do diretório .roo/tools do seu projeto.",
+			"toolsHeader": "Ferramentas personalizadas disponíveis",
+			"noTools": "Nenhuma ferramenta personalizada carregada. Adicione arquivos .ts ou .js ao diretório .roo/tools do seu projeto.",
+			"refreshButton": "Atualizar",
+			"refreshing": "Atualizando...",
+			"refreshSuccess": "Ferramentas atualizadas com sucesso",
+			"refreshError": "Falha ao atualizar ferramentas",
+			"toolParameters": "Parâmetros"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/ru/settings.json b/webview-ui/src/i18n/locales/ru/settings.json
index 57560a9d33b..1057c86115d 100644
--- a/webview-ui/src/i18n/locales/ru/settings.json
+++ b/webview-ui/src/i18n/locales/ru/settings.json
@@ -825,6 +825,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "Параллельные вызовы инструментов",
 			"description": "При включении нативный протокол может выполнять несколько инструментов в одном ходе сообщения ассистента."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "Включить пользовательские инструменты",
+			"description": "Если включено, Roo сможет загружать и использовать пользовательские инструменты TypeScript/JavaScript из каталога .roo/tools вашего проекта.",
+			"toolsHeader": "Доступные пользовательские инструменты",
+			"noTools": "Пользовательские инструменты не загружены. Добавьте файлы .ts или .js в каталог .roo/tools вашего проекта.",
+			"refreshButton": "Обновить",
+			"refreshing": "Обновление...",
+			"refreshSuccess": "Инструменты успешно обновлены",
+			"refreshError": "Не удалось обновить инструменты",
+			"toolParameters": "Параметры"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/tr/settings.json b/webview-ui/src/i18n/locales/tr/settings.json
index bb2b1d38432..c8bd9888ffe 100644
--- a/webview-ui/src/i18n/locales/tr/settings.json
+++ b/webview-ui/src/i18n/locales/tr/settings.json
@@ -825,6 +825,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "Paralel araç çağrıları",
 			"description": "Etkinleştirildiğinde, yerel protokol tek bir asistan mesaj turunda birden fazla araç yürütebilir."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "Özel araçları etkinleştir",
+			"description": "Etkinleştirildiğinde, Roo projenizin .roo/tools dizininden özel TypeScript/JavaScript araçlarını yükleyebilir ve kullanabilir.",
+			"toolsHeader": "Kullanılabilir Özel Araçlar",
+			"noTools": "Özel araç yüklenmedi. Projenizin .roo/tools dizinine .ts veya .js dosyaları ekleyin.",
+			"refreshButton": "Yenile",
+			"refreshing": "Yenileniyor...",
+			"refreshSuccess": "Araçlar başarıyla yenilendi",
+			"refreshError": "Araçlar yenilenemedi",
+			"toolParameters": "Parametreler"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/vi/settings.json b/webview-ui/src/i18n/locales/vi/settings.json
index 8425d8d6ef5..4f1a38157d5 100644
--- a/webview-ui/src/i18n/locales/vi/settings.json
+++ b/webview-ui/src/i18n/locales/vi/settings.json
@@ -825,6 +825,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "Lệnh gọi công cụ song song",
 			"description": "Khi được bật, giao thức native có thể thực thi nhiều công cụ trong một lượt tin nhắn của trợ lý."
+		},
+		"CUSTOM_TOOLS": {
+			"name": "Bật công cụ tùy chỉnh",
+			"description": "Khi được bật, Roo có thể tải và sử dụng các công cụ TypeScript/JavaScript tùy chỉnh từ thư mục .roo/tools của dự án của bạn.",
+			"toolsHeader": "Công cụ tùy chỉnh có sẵn",
+			"noTools": "Không có công cụ tùy chỉnh nào được tải. Thêm tệp .ts hoặc .js vào thư mục .roo/tools của dự án của bạn.",
+			"refreshButton": "Làm mới",
+			"refreshing": "Đang làm mới...",
+			"refreshSuccess": "Làm mới công cụ thành công",
+			"refreshError": "Không thể làm mới công cụ",
+			"toolParameters": "Thông số"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/zh-CN/settings.json b/webview-ui/src/i18n/locales/zh-CN/settings.json
index 327eb9f8c76..dd88c8fd20b 100644
--- a/webview-ui/src/i18n/locales/zh-CN/settings.json
+++ b/webview-ui/src/i18n/locales/zh-CN/settings.json
@@ -825,6 +825,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "并行工具调用",
 			"description": "启用后，原生协议可在单个助手消息轮次中执行多个工具。"
+		},
+		"CUSTOM_TOOLS": {
+			"name": "启用自定义工具",
+			"description": "启用后，Roo 可以从项目中的 .roo/tools 目录加载并使用自定义 TypeScript/JavaScript 工具。",
+			"toolsHeader": "可用自定义工具",
+			"noTools": "未加载自定义工具。请向项目的 .roo/tools 目录添加 .ts 或 .js 文件。",
+			"refreshButton": "刷新",
+			"refreshing": "正在刷新...",
+			"refreshSuccess": "工具刷新成功",
+			"refreshError": "工具刷新失败",
+			"toolParameters": "参数"
 		}
 	},
 	"promptCaching": {
diff --git a/webview-ui/src/i18n/locales/zh-TW/settings.json b/webview-ui/src/i18n/locales/zh-TW/settings.json
index 4967a7d6791..221ad881a5b 100644
--- a/webview-ui/src/i18n/locales/zh-TW/settings.json
+++ b/webview-ui/src/i18n/locales/zh-TW/settings.json
@@ -825,6 +825,17 @@
 		"MULTIPLE_NATIVE_TOOL_CALLS": {
 			"name": "並行工具呼叫",
 			"description": "啟用後，原生協定可在單個助理訊息輪次中執行多個工具。"
+		},
+		"CUSTOM_TOOLS": {
+			"name": "啟用自訂工具",
+			"description": "啟用後，Roo 可以從專案中的 .roo/tools 目錄載入並使用自訂 TypeScript/JavaScript 工具。",
+			"toolsHeader": "可用自訂工具",
+			"noTools": "未載入自訂工具。請向專案的 .roo/tools 目錄新增 .ts 或 .js 檔案。",
+			"refreshButton": "重新整理",
+			"refreshing": "正在重新整理...",
+			"refreshSuccess": "工具重新整理成功",
+			"refreshError": "工具重新整理失敗",
+			"toolParameters": "參數"
 		}
 	},
 	"promptCaching": {