Setting for the max number of open tabs to include in context

src/core/Cline.ts

@@ -3112,11 +3112,14 @@ export class Cline {
 		}
 
 		details += "\n\n# VSCode Open Tabs"
+		const { maxOpenTabsContext } = (await this.providerRef.deref()?.getState()) ?? {}
+		const maxTabs = maxOpenTabsContext ?? 20
 		const openTabs = vscode.window.tabGroups.all
 			.flatMap((group) => group.tabs)
 			.map((tab) => (tab.input as vscode.TabInputText)?.uri?.fsPath)
 			.filter(Boolean)
 			.map((absolutePath) => path.relative(cwd, absolutePath).toPosix())
+			.slice(0, maxTabs)
 			.join("\n")
 		if (openTabs) {
 			details += `\n${openTabs}`

src/core/webview/ClineProvider.ts

@@ -127,6 +127,7 @@ type GlobalStateKey =
 	| "requestyModelInfo"
 	| "unboundModelInfo"
 	| "modelTemperature"
+	| "maxOpenTabsContext"
 
 export const GlobalFileNames = {
 	apiConversationHistory: "api_conversation_history.json",
@@ -1207,6 +1208,11 @@ export class ClineProvider implements vscode.WebviewViewProvider {
 						await this.updateGlobalState("screenshotQuality", message.value)
 						await this.postStateToWebview()
 						break
+					case "maxOpenTabsContext":
+						const tabCount = Math.min(Math.max(0, message.value ?? 20), 500)
+						await this.updateGlobalState("maxOpenTabsContext", tabCount)
+						await this.postStateToWebview()
+						break
 					case "enhancementApiConfigId":
 						await this.updateGlobalState("enhancementApiConfigId", message.text)
 						await this.postStateToWebview()
@@ -2378,6 +2384,7 @@ export class ClineProvider implements vscode.WebviewViewProvider {
 			enhancementApiConfigId,
 			autoApprovalEnabled,
 			experiments,
+			maxOpenTabsContext,
 		} = await this.getState()
 
 		const allowedCommands = vscode.workspace.getConfiguration("roo-cline").get<string[]>("allowedCommands") || []
@@ -2427,6 +2434,7 @@ export class ClineProvider implements vscode.WebviewViewProvider {
 			customModes: await this.customModesManager.getCustomModes(),
 			experiments: experiments ?? experimentDefault,
 			mcpServers: this.mcpHub?.getAllServers() ?? [],
+			maxOpenTabsContext: maxOpenTabsContext ?? 20,
 		}
 	}
 
@@ -2562,6 +2570,7 @@ export class ClineProvider implements vscode.WebviewViewProvider {
 			requestyModelId,
 			requestyModelInfo,
 			modelTemperature,
+			maxOpenTabsContext,
 		] = await Promise.all([
 			this.getGlobalState("apiProvider") as Promise<ApiProvider | undefined>,
 			this.getGlobalState("apiModelId") as Promise<string | undefined>,
@@ -2642,6 +2651,7 @@ export class ClineProvider implements vscode.WebviewViewProvider {
 			this.getGlobalState("requestyModelId") as Promise<string | undefined>,
 			this.getGlobalState("requestyModelInfo") as Promise<ModelInfo | undefined>,
 			this.getGlobalState("modelTemperature") as Promise<number | undefined>,
+			this.getGlobalState("maxOpenTabsContext") as Promise<number | undefined>,
 		])
 
 		let apiProvider: ApiProvider
@@ -2768,6 +2778,7 @@ export class ClineProvider implements vscode.WebviewViewProvider {
 			experiments: experiments ?? experimentDefault,
 			autoApprovalEnabled: autoApprovalEnabled ?? false,
 			customModes,
+			maxOpenTabsContext: maxOpenTabsContext ?? 20,
 		}
 	}
 

src/core/webview/__tests__/ClineProvider.test.ts

@@ -351,6 +351,7 @@ describe("ClineProvider", () => {
 			mode: defaultModeSlug,
 			customModes: [],
 			experiments: experimentDefault,
+			maxOpenTabsContext: 20,
 		}
 
 		const message: ExtensionMessage = {

src/shared/ExtensionMessage.ts

@@ -128,6 +128,7 @@ export interface ExtensionState {
 	autoApprovalEnabled?: boolean
 	customModes: ModeConfig[]
 	toolRequirements?: Record<string, boolean> // Map of tool names to their requirements (e.g. {"apply_diff": true} if diffEnabled)
+	maxOpenTabsContext: number // Maximum number of VSCode open tabs to include in context (0-500)
 }
 
 export interface ClineMessage {

src/shared/WebviewMessage.ts

@@ -92,6 +92,7 @@ export interface WebviewMessage {
 		| "openCustomModesSettings"
 		| "checkpointDiff"
 		| "checkpointRestore"
+		| "maxOpenTabsContext"
 	text?: string
 	disabled?: boolean
 	askResponse?: ClineAskResponse

webview-ui/src/components/settings/SettingsView.tsx

@@ -63,6 +63,8 @@ const SettingsView = ({ onDone }: SettingsViewProps) => {
 		setExperimentEnabled,
 		alwaysAllowModeSwitch,
 		setAlwaysAllowModeSwitch,
+		maxOpenTabsContext,
+		setMaxOpenTabsContext,
 	} = useExtensionState()
 	const [apiErrorMessage, setApiErrorMessage] = useState<string | undefined>(undefined)
 	const [modelIdErrorMessage, setModelIdErrorMessage] = useState<string | undefined>(undefined)
@@ -104,6 +106,7 @@ const SettingsView = ({ onDone }: SettingsViewProps) => {
 			vscode.postMessage({ type: "alwaysApproveResubmit", bool: alwaysApproveResubmit })
 			vscode.postMessage({ type: "requestDelaySeconds", value: requestDelaySeconds })
 			vscode.postMessage({ type: "rateLimitSeconds", value: rateLimitSeconds })
+			vscode.postMessage({ type: "maxOpenTabsContext", value: maxOpenTabsContext })
 			vscode.postMessage({ type: "currentApiConfigName", text: currentApiConfigName })
 			vscode.postMessage({
 				type: "upsertApiConfiguration",
@@ -626,6 +629,28 @@ const SettingsView = ({ onDone }: SettingsViewProps) => {
 						</p>
 					</div>
 
+					<div style={{ marginBottom: 15 }}>
+						<div style={{ display: "flex", flexDirection: "column", gap: "5px" }}>
+							<span style={{ fontWeight: "500" }}>Open tabs context limit</span>
+							<div style={{ display: "flex", alignItems: "center", gap: "5px" }}>
+								<input
+									type="range"
+									min="0"
+									max="500"
+									step="1"
+									value={maxOpenTabsContext ?? 20}
+									onChange={(e) => setMaxOpenTabsContext(parseInt(e.target.value))}
+									style={{ ...sliderStyle }}
+								/>
+								<span style={{ ...sliderLabelStyle }}>{maxOpenTabsContext ?? 20}</span>
+							</div>
+						</div>
+						<p style={{ fontSize: "12px", marginTop: "5px", color: "var(--vscode-descriptionForeground)" }}>
+							Maximum number of VSCode open tabs to include in context. Higher values provide more context
+							but increase token usage.
+						</p>
+					</div>
+
 					<div style={{ marginBottom: 15 }}>
 						<VSCodeCheckbox
 							checked={diffEnabled}

webview-ui/src/context/ExtensionStateContext.tsx

@@ -82,6 +82,7 @@ export interface ExtensionStateContextType extends ExtensionState {
 	handleInputChange: (field: keyof ApiConfiguration, softUpdate?: boolean) => (event: any) => void
 	customModes: ModeConfig[]
 	setCustomModes: (value: ModeConfig[]) => void
+	setMaxOpenTabsContext: (value: number) => void
 }
 
 export const ExtensionStateContext = createContext<ExtensionStateContextType | undefined>(undefined)
@@ -117,6 +118,7 @@ export const ExtensionStateContextProvider: React.FC<{ children: React.ReactNode
 		enhancementApiConfigId: "",
 		autoApprovalEnabled: false,
 		customModes: [],
+		maxOpenTabsContext: 20,
 	})
 
 	const [didHydrateState, setDidHydrateState] = useState(false)
@@ -350,6 +352,7 @@ export const ExtensionStateContextProvider: React.FC<{ children: React.ReactNode
 		setAutoApprovalEnabled: (value) => setState((prevState) => ({ ...prevState, autoApprovalEnabled: value })),
 		handleInputChange,
 		setCustomModes: (value) => setState((prevState) => ({ ...prevState, customModes: value })),
+		setMaxOpenTabsContext: (value) => setState((prevState) => ({ ...prevState, maxOpenTabsContext: value })),
 	}
 
 	return <ExtensionStateContext.Provider value={contextValue}>{children}</ExtensionStateContext.Provider>