diff --git a/src/components/chat/message-input.tsx b/src/components/chat/message-input.tsx
index 2aa83cc..80637e9 100644
--- a/src/components/chat/message-input.tsx
+++ b/src/components/chat/message-input.tsx
@@ -46,7 +46,9 @@ import type {
 } from "@/lib/types"
 import {
   ATTACH_FILE_TO_SESSION_EVENT,
+  APPEND_TEXT_TO_SESSION_EVENT,
   type AttachFileToSessionDetail,
+  type AppendTextToSessionDetail,
 } from "@/lib/session-attachment-events"
 import { ModeSelector } from "@/components/chat/mode-selector"
 import { SessionConfigSelector } from "@/components/chat/session-config-selector"
@@ -778,6 +780,29 @@ export function MessageInput({
     }
   }, [appendResourceAttachments, attachmentTabId])
 
+  useEffect(() => {
+    if (!attachmentTabId) return
+
+    const handleAppendText = (event: Event) => {
+      const customEvent = event as CustomEvent<AppendTextToSessionDetail>
+      if (!customEvent.detail) return
+      if (customEvent.detail.tabId !== attachmentTabId) return
+      const appendText = customEvent.detail.text
+      setText((prev) => {
+        if (prev.length === 0) return appendText
+        return prev.endsWith(" ") ? prev + appendText : prev + " " + appendText
+      })
+      requestAnimationFrame(() => {
+        textareaRef.current?.focus()
+      })
+    }
+
+    window.addEventListener(APPEND_TEXT_TO_SESSION_EVENT, handleAppendText)
+    return () => {
+      window.removeEventListener(APPEND_TEXT_TO_SESSION_EVENT, handleAppendText)
+    }
+  }, [attachmentTabId])
+
   useEffect(() => {
     let cancelled = false
     const unlisteners: Array<() => void | Promise<void>> = []
diff --git a/src/components/layout/aux-panel-file-tree-tab.tsx b/src/components/layout/aux-panel-file-tree-tab.tsx
index 6875666..7ced47f 100644
--- a/src/components/layout/aux-panel-file-tree-tab.tsx
+++ b/src/components/layout/aux-panel-file-tree-tab.tsx
@@ -38,7 +38,10 @@ import {
   stopFileTreeWatch,
 } from "@/lib/tauri"
 import { disposeTauriListener } from "@/lib/tauri-listener"
-import { emitAttachFileToSession } from "@/lib/session-attachment-events"
+import {
+  emitAttachFileToSession,
+  emitAppendTextToSession,
+} from "@/lib/session-attachment-events"
 import type {
   FileTreeChangedEvent,
   FileTreeNode,
@@ -612,6 +615,17 @@ function RenderNode({
   const isGitMenuDisabled = !gitEnabled || isGitignoreIgnored
   const shouldRenderChildren = expandedPaths.has(node.path)
 
+  const handleAttachDirToSession = () => {
+    if (!activeSessionTabId) return
+    const relativePath = node.path.endsWith("/")
+      ? `@${node.path} `
+      : `@${node.path}/ `
+    emitAppendTextToSession({
+      tabId: activeSessionTabId,
+      text: relativePath,
+    })
+  }
+
   const handleOpenDirInSystemExplorer = async () => {
     try {
       await revealItemInDir(absolutePath)
@@ -669,6 +683,12 @@ function RenderNode({
         </FileTreeFolder>
       </ContextMenuTrigger>
       <ContextMenuContent>
+        <ContextMenuItem
+          onSelect={handleAttachDirToSession}
+          disabled={!activeSessionTabId}
+        >
+          {t("attachToCurrentSession")}
+        </ContextMenuItem>
         <ContextMenuSub>
           <ContextMenuSubTrigger>{t("new")}</ContextMenuSubTrigger>
           <ContextMenuSubContent>
diff --git a/src/lib/session-attachment-events.ts b/src/lib/session-attachment-events.ts
index ad1c7ae..d16cd58 100644
--- a/src/lib/session-attachment-events.ts
+++ b/src/lib/session-attachment-events.ts
@@ -15,3 +15,21 @@ export function emitAttachFileToSession(
     })
   )
 }
+
+export const APPEND_TEXT_TO_SESSION_EVENT = "codeg:append-text-to-session"
+
+export interface AppendTextToSessionDetail {
+  tabId: string
+  text: string
+}
+
+export function emitAppendTextToSession(
+  detail: AppendTextToSessionDetail
+): void {
+  if (typeof window === "undefined") return
+  window.dispatchEvent(
+    new CustomEvent<AppendTextToSessionDetail>(APPEND_TEXT_TO_SESSION_EVENT, {
+      detail,
+    })
+  )
+}