diff --git a/AIClasses/Claude/Claude.ts b/AIClasses/Claude/Claude.ts
index b8c2279..5bf69a0 100644
--- a/AIClasses/Claude/Claude.ts
+++ b/AIClasses/Claude/Claude.ts
@@ -16,6 +16,7 @@ import { MimeTypeToFileTypes } from "Enums/FileTypeMimeTypeMapping";
 import { ApiError, ApiErrorType } from "Types/ApiError";
 import { parseToolCall, parseFunctionResponse } from "Helpers/ResponseHelper";
 import { AIToolUsageMode } from "Enums/AIToolUsageMode";
+import { Copy, replaceCopy } from "Enums/Copy";
 
 export class Claude extends BaseAIClass {
 
@@ -308,7 +309,7 @@ export class Claude extends BaseAIClass {
             }
 
             return [
-                {type: "text", text: `The contents of the file '${attachment.fileName}' are provided below.` },
+                {type: "text", text: replaceCopy(Copy.AttachedFile, [attachment.fileName]) },
                 {
                     type: isPlainText || mimeType === MimeType.APPLICATION_PDF ? "document" : "image",
                     source: {
diff --git a/AIClasses/Gemini/Gemini.ts b/AIClasses/Gemini/Gemini.ts
index e870fd5..837866a 100644
--- a/AIClasses/Gemini/Gemini.ts
+++ b/AIClasses/Gemini/Gemini.ts
@@ -18,6 +18,7 @@ import { ApiError, ApiErrorType } from "Types/ApiError";
 import { parseToolCall, parseFunctionResponse } from "Helpers/ResponseHelper";
 import type { GeminiRetryInfo, GeminiErrorResponse } from "./GeminiTypes";
 import { AIToolUsageMode } from "Enums/AIToolUsageMode";
+import { Copy, replaceCopy } from "Enums/Copy";
 
 export class Gemini extends BaseAIClass {
 
@@ -348,7 +349,7 @@ export class Gemini extends BaseAIClass {
         continue;
       }
 
-      parts.push({ text: `The contents of the file '${attachment.fileName}' are provided below.` });
+      parts.push({ text: replaceCopy(Copy.AttachedFile, [attachment.fileName])});
       parts.push({
         fileData: {
           mimeType: mimeType,
diff --git a/AIClasses/Mistral/Mistral.ts b/AIClasses/Mistral/Mistral.ts
index b92bfa5..7e6bb07 100644
--- a/AIClasses/Mistral/Mistral.ts
+++ b/AIClasses/Mistral/Mistral.ts
@@ -17,6 +17,7 @@ import { parseToolCall, parseFunctionResponse } from "Helpers/ResponseHelper";
 import { AIToolUsageMode } from "Enums/AIToolUsageMode";
 import type { MistralStreamChunk, MistralToolDefinition, MistralMessage, MistralContentPart } from "./MistralTypes";
 import type { MistralFileService } from "./MistralFileService";
+import { Copy, replaceCopy } from "Enums/Copy";
 
 export class Mistral extends BaseAIClass {
 
@@ -355,7 +356,7 @@ export class Mistral extends BaseAIClass {
                 const signedUrl = fileService.getSignedUrl(fileID);
                 if (signedUrl) {
                     contentParts.push(
-                        { type: "text", text: `The contents of the file '${attachment.fileName}' are provided below.` },
+                        { type: "text", text: replaceCopy(Copy.AttachedFile, [attachment.fileName]) },
                         { type: "document_url", document_url: signedUrl }
                     );
                 } else {
@@ -371,7 +372,7 @@ export class Mistral extends BaseAIClass {
             const signedUrl = fileService.getSignedUrl(fileID);
             if (signedUrl) {
                 contentParts.push(
-                    { type: "text", text: `The contents of the file '${attachment.fileName}' are provided below.` },
+                    { type: "text", text: replaceCopy(Copy.AttachedFile, [attachment.fileName]) },
                     {
                         type: "image_url",
                         image_url: signedUrl
diff --git a/AIClasses/OpenAI/OpenAI.ts b/AIClasses/OpenAI/OpenAI.ts
index 96c4e52..3995bda 100644
--- a/AIClasses/OpenAI/OpenAI.ts
+++ b/AIClasses/OpenAI/OpenAI.ts
@@ -15,6 +15,7 @@ import { isTextFile } from "Enums/FileType";
 import { MimeTypeToFileTypes } from "Enums/FileTypeMimeTypeMapping";
 import { parseToolCall, parseFunctionResponse } from "Helpers/ResponseHelper";
 import { AIToolUsageMode } from "Enums/AIToolUsageMode";
+import { Copy, replaceCopy } from "Enums/Copy";
 
 export class OpenAI extends BaseAIClass {
 
@@ -352,7 +353,7 @@ export class OpenAI extends BaseAIClass {
             }
 
             contentBlocks.push(
-                { type: "input_text", text: `The contents of the file '${attachment.fileName}' are provided below.` },
+                { type: "input_text", text: replaceCopy(Copy.AttachedFile, [attachment.fileName]) },
                 {
                     type: isPlainText || mimeType === MimeType.APPLICATION_PDF ? "input_file" : "input_image",
                     file_id: fileID
diff --git a/AIPrompts/SystemPrompt.ts b/AIPrompts/SystemPrompt.ts
index 1260e79..ec308b8 100644
--- a/AIPrompts/SystemPrompt.ts
+++ b/AIPrompts/SystemPrompt.ts
@@ -1,3 +1,5 @@
+import { Copy } from "Enums/Copy";
+
 export const SystemInstruction: string = `
 # Obsidian AI Assistant
 
@@ -18,7 +20,8 @@ You are a specialized AI assistant with direct access to the user's Obsidian vau
 - Task verbs (create, generate, update, delete) → Execute corresponding function
 - Implied actions ("I need X") → Call the function that produces X
 - Outcome requests ("Show me Y") → Use tools to retrieve/generate Y
-- Image/PDF references → Read the file first
+- Image/PDF/Document references → Read the file first
+- Attached files → Use the provided content directly
 
 **Example:**
 User: "Create a note about today's meeting with Sarah"
@@ -255,6 +258,15 @@ When searches return or reference images or PDFs:
 - Extract relevant information to answer the user's query
 - Reference the source file with [[wiki-links]] as usual
 
+### File Attachments
+
+**Users can attach files directly to their messages.** When a file is attached, its content is provided inline in the conversation. Attached files are likely NOT present in the vault so use the attached content directly.
+
+**How to recognize attached files:**
+- A text block states: ${Copy.AttachedFile}
+- The file content or file ID immediately follows that text block
+- Attachments for document filetypes (.docx, .odt, .xlsx, etc.,) are included as plain text
+
 ---
 
 ## Obsidian Bases
diff --git a/Enums/Copy.ts b/Enums/Copy.ts
index aa30329..2db40ea 100644
--- a/Enums/Copy.ts
+++ b/Enums/Copy.ts
@@ -101,6 +101,10 @@ export enum Copy {
     ButtonTurnOffPlanningMode = "Turn off Planning Mode",
     ButtonTurnOnPlanningMode = "Turn on Planning Mode",
 
+    // Agent file message
+    AttachedFile = `The user has attached the file {fileName}. The contents of the file are included below.
+**Note that this is an attachment to the chat and the file is likely NOT present in the vault**`,
+
     // Execution Plan Messages
     PlanningFailedError = `Failed to generate plan. You should attempt to recover from this.
 ### Next Actions
diff --git a/Helpers/DocumentHelper.ts b/Helpers/DocumentHelper.ts
index 0f8bc66..72198ca 100644
--- a/Helpers/DocumentHelper.ts
+++ b/Helpers/DocumentHelper.ts
@@ -1,7 +1,7 @@
 import { extractText, getDocumentProxy } from 'unpdf';
 import type { IPageText } from '../Types/SearchTypes';
 import { Exception } from './Exception';
-import OfficeParser from 'officeparser';
+import { parseOffice } from 'officeparser';
 
 // Handles PDF format
 export async function readPDF(arrayBuffer: ArrayBuffer): Promise<IPageText[]> {
@@ -34,7 +34,7 @@ export async function readPDF(arrayBuffer: ArrayBuffer): Promise<IPageText[]> {
 // Handles document formats: DOCX, PPTX, XLSX, ODT, ODP, ODS
 export async function readDocument(arrayBuffer: ArrayBuffer): Promise<IPageText[]> {
     try {
-        const ast = await OfficeParser.parseOffice(arrayBuffer, {
+        const ast = await parseOffice(arrayBuffer, {
             extractAttachments: true,
             ocr: true,
             ocrLanguage: "eng+esp"
diff --git a/esbuild.config.mjs b/esbuild.config.mjs
index d7a437e..b3467e7 100644
--- a/esbuild.config.mjs
+++ b/esbuild.config.mjs
@@ -102,13 +102,29 @@ const cssMergerPlugin = {
   }
 };
 
-const buildOptions = {
-  // officeparser's default entry point requires Node's "fs" module, which crashes the plugin on
-  // Obsidian mobile. The browser bundle provides identical functionality using web APIs instead.
-  alias: {
-    'officeparser': './node_modules/officeparser/dist/officeparser.browser.js',
+// officeparser's browser bundle is an IIFE (var officeParser = (()=> { ... })()) that doesn't
+// set module.exports, so esbuild can't resolve its exports. This plugin intercepts the resolve
+// and appends a CJS export line so imports work correctly.
+const officeParserPlugin = {
+  name: "officeparser-cjs-shim",
+  setup(build) {
+    build.onResolve({ filter: /^officeparser$/ }, () => ({
+      path: join(process.cwd(), 'node_modules', 'officeparser', 'dist', 'officeparser.browser.js'),
+      namespace: 'officeparser-shim',
+    }));
+    build.onLoad({ filter: /.*/, namespace: 'officeparser-shim' }, async (args) => {
+      const contents = readFileSync(args.path, 'utf-8');
+      return {
+        contents: contents + '\nmodule.exports = officeParser;\n',
+        loader: 'js',
+      };
+    });
   },
+};
+
+const buildOptions = {
   plugins: [
+    officeParserPlugin,
     esbuildSvelte({
       compilerOptions: { css: "injected" },
       preprocess: sveltePreprocess(),