🪨 feat: AWS Bedrock Document Uploads (#11912)

* feat: add aws bedrock upload to provider support

* chore: address copilot comments

* feat: add shared Bedrock document format types and MIME mapping

Bedrock Converse API accepts 9 document formats beyond PDF. Add
BedrockDocumentFormat union type, MIME-to-format mapping, and helpers
in data-provider so both client and backend can reference them.

* refactor: generalize Bedrock PDF validation to support all document types

Rename validateBedrockPdf to validateBedrockDocument with MIME-aware
logic: 4.5MB hard limit applies to all types, PDF header check only
runs for application/pdf. Adds test coverage for non-PDF documents.

* feat: support all Bedrock document formats in encoding pipeline

Widen file type gates to accept csv, doc, docx, xls, xlsx, html, txt,
md for Bedrock. Uses shared MIME-to-format map instead of hardcoded
'pdf'. Other providers' PDF-only paths remain unchanged.

* feat: expand Bedrock file upload UI to accept all document types

Add 'image_document_extended' upload type for Bedrock with accept
filters for all 9 supported formats. Update drag-and-drop validation
to use isBedrockDocumentType helper.

* fix: route Bedrock document types through provider pipeline

api/app/clients/BaseClient.js

@@ -20,6 +20,7 @@ const {
   isAgentsEndpoint,
   isEphemeralAgentId,
   supportsBalanceCheck,
+  isBedrockDocumentType,
 } = require('librechat-data-provider');
 const {
   updateMessage,
@@ -1300,6 +1301,9 @@ class BaseClient {
 
     const allFiles = [];
 
+    const provider = this.options.agent?.provider ?? this.options.endpoint;
+    const isBedrock = provider === EModelEndpoint.bedrock;
+
     for (const file of attachments) {
       /** @type {FileSources} */
       const source = file.source ?? FileSources.local;
@@ -1317,6 +1321,9 @@ class BaseClient {
       } else if (file.type === 'application/pdf') {
         categorizedAttachments.documents.push(file);
         allFiles.push(file);
+      } else if (isBedrock && isBedrockDocumentType(file.type)) {
+        categorizedAttachments.documents.push(file);
+        allFiles.push(file);
       } else if (file.type.startsWith('video/')) {
         categorizedAttachments.videos.push(file);
         allFiles.push(file);

client/src/components/Chat/Input/Files/AttachFileMenu.tsx

@@ -8,13 +8,6 @@ import {
   FileImageIcon,
   TerminalSquareIcon,
 } from 'lucide-react';
-import {
-  Providers,
-  EToolResources,
-  EModelEndpoint,
-  defaultAgentCapabilities,
-  isDocumentSupportedProvider,
-} from 'librechat-data-provider';
 import {
   FileUpload,
   TooltipAnchor,
@@ -22,6 +15,14 @@ import {
   AttachmentIcon,
   SharePointIcon,
 } from '@librechat/client';
+import {
+  Providers,
+  EToolResources,
+  EModelEndpoint,
+  defaultAgentCapabilities,
+  bedrockDocumentExtensions,
+  isDocumentSupportedProvider,
+} from 'librechat-data-provider';
 import type { EndpointFileConfig } from 'librechat-data-provider';
 import {
   useAgentToolPermissions,
@@ -37,7 +38,12 @@ import { ephemeralAgentByConvoId } from '~/store';
 import { MenuItemProps } from '~/common';
 import { cn } from '~/utils';
 
-type FileUploadType = 'image' | 'document' | 'image_document' | 'image_document_video_audio';
+type FileUploadType =
+  | 'image'
+  | 'document'
+  | 'image_document'
+  | 'image_document_extended'
+  | 'image_document_video_audio';
 
 interface AttachFileMenuProps {
   agentId?: string | null;
@@ -99,6 +105,8 @@ const AttachFileMenu = ({
       inputRef.current.accept = '.pdf,application/pdf';
     } else if (fileType === 'image_document') {
       inputRef.current.accept = 'image/*,.heif,.heic,.pdf,application/pdf';
+    } else if (fileType === 'image_document_extended') {
+      inputRef.current.accept = `image/*,.heif,.heic,${bedrockDocumentExtensions}`;
     } else if (fileType === 'image_document_video_audio') {
       inputRef.current.accept = 'image/*,.heif,.heic,.pdf,application/pdf,video/*,audio/*';
     } else {
@@ -134,6 +142,11 @@ const AttachFileMenu = ({
             let fileType: Exclude<FileUploadType, 'image' | 'document'> = 'image_document';
             if (currentProvider === Providers.GOOGLE || currentProvider === Providers.OPENROUTER) {
               fileType = 'image_document_video_audio';
+            } else if (
+              currentProvider === Providers.BEDROCK ||
+              endpointType === EModelEndpoint.bedrock
+            ) {
+              fileType = 'image_document_extended';
             }
             onAction(fileType);
           },

client/src/components/Chat/Input/Files/DragDropModal.tsx

@@ -1,14 +1,6 @@
 import React, { useMemo } from 'react';
 import { useRecoilValue } from 'recoil';
 import { OGDialog, OGDialogTemplate } from '@librechat/client';
-import {
-  Providers,
-  inferMimeType,
-  EToolResources,
-  EModelEndpoint,
-  defaultAgentCapabilities,
-  isDocumentSupportedProvider,
-} from 'librechat-data-provider';
 import {
   ImageUpIcon,
   FileSearch,
@@ -16,6 +8,15 @@ import {
   FileImageIcon,
   TerminalSquareIcon,
 } from 'lucide-react';
+import {
+  Providers,
+  inferMimeType,
+  EToolResources,
+  EModelEndpoint,
+  isBedrockDocumentType,
+  defaultAgentCapabilities,
+  isDocumentSupportedProvider,
+} from 'librechat-data-provider';
 import {
   useAgentToolPermissions,
   useAgentCapabilities,
@@ -77,20 +78,26 @@ const DragDropModal = ({ onOptionSelect, setShowModal, files, isVisible }: DragD
     ) {
       const supportsImageDocVideoAudio =
         currentProvider === EModelEndpoint.google || currentProvider === Providers.OPENROUTER;
-      const validFileTypes = supportsImageDocVideoAudio
+      const isBedrock =
-        ? files.every((file) => {
+        currentProvider === Providers.BEDROCK || endpointType === EModelEndpoint.bedrock;
-            const type = getFileType(file);
+
-            return (
+      const isValidProviderFile = (file: File): boolean => {
-              type?.startsWith('image/') ||
+        const type = getFileType(file);
-              type?.startsWith('video/') ||
+        if (supportsImageDocVideoAudio) {
-              type?.startsWith('audio/') ||
+          return (
-              type === 'application/pdf'
+            type?.startsWith('image/') ||
-            );
+            type?.startsWith('video/') ||
-          })
+            type?.startsWith('audio/') ||
-        : files.every((file) => {
+            type === 'application/pdf'
-            const type = getFileType(file);
+          );
-            return type?.startsWith('image/') || type === 'application/pdf';
+        }
-          });
+        if (isBedrock) {
+          return type?.startsWith('image/') || isBedrockDocumentType(type);
+        }
+        return type?.startsWith('image/') || type === 'application/pdf';
+      };
+
+      const validFileTypes = files.every(isValidProviderFile);
 
       _options.push({
         label: localize('com_ui_upload_provider'),

packages/api/src/files/encode/document.spec.ts

@@ -7,6 +7,7 @@ import { encodeAndFormatDocuments } from './document';
 /** Mock the validation module */
 jest.mock('~/files/validation', () => ({
   validatePdf: jest.fn(),
+  validateBedrockDocument: jest.fn(),
 }));
 
 /** Mock the utils module */
@@ -15,11 +16,14 @@ jest.mock('./utils', () => ({
   getConfiguredFileSizeLimit: jest.fn(),
 }));
 
-import { validatePdf } from '~/files/validation';
+import { validatePdf, validateBedrockDocument } from '~/files/validation';
 import { getFileStream, getConfiguredFileSizeLimit } from './utils';
 import { Types } from 'mongoose';
 
 const mockedValidatePdf = validatePdf as jest.MockedFunction<typeof validatePdf>;
+const mockedValidateBedrockDocument = validateBedrockDocument as jest.MockedFunction<
+  typeof validateBedrockDocument
+>;
 const mockedGetFileStream = getFileStream as jest.MockedFunction<typeof getFileStream>;
 const mockedGetConfiguredFileSizeLimit = getConfiguredFileSizeLimit as jest.MockedFunction<
   typeof getConfiguredFileSizeLimit
@@ -84,6 +88,26 @@ describe('encodeAndFormatDocuments - fileConfig integration', () => {
       updatedAt: new Date(),
     }) as unknown as IMongoFile;
 
+  const createMockDocFile = (
+    sizeInMB: number,
+    mimeType: string,
+    filename: string,
+  ): IMongoFile =>
+    ({
+      _id: new Types.ObjectId(),
+      user: new Types.ObjectId(),
+      file_id: new Types.ObjectId().toString(),
+      filename,
+      type: mimeType,
+      bytes: Math.floor(sizeInMB * 1024 * 1024),
+      object: 'file',
+      usage: 0,
+      source: 'test',
+      filepath: `/test/path/${filename}`,
+      createdAt: new Date(),
+      updatedAt: new Date(),
+    }) as unknown as IMongoFile;
+
   describe('Configuration extraction and validation', () => {
     it('should pass configured file size limit to validatePdf for OpenAI', async () => {
       const configuredLimit = mbToBytes(15);
@@ -500,6 +524,165 @@ describe('encodeAndFormatDocuments - fileConfig integration', () => {
       });
     });
 
+    it('should format Bedrock document with valid PDF', async () => {
+      const req = createMockRequest() as ServerRequest;
+      const file = createMockFile(3);
+
+      const mockContent = Buffer.from('test-pdf-content').toString('base64');
+      mockedGetFileStream.mockResolvedValue({
+        file,
+        content: mockContent,
+        metadata: file,
+      });
+
+      mockedValidateBedrockDocument.mockResolvedValue({ isValid: true });
+
+      const result = await encodeAndFormatDocuments(
+        req,
+        [file],
+        { provider: Providers.BEDROCK },
+        mockStrategyFunctions,
+      );
+
+      expect(result.documents).toHaveLength(1);
+      expect(result.documents[0]).toMatchObject({
+        type: 'document',
+        document: {
+          name: 'test_pdf',
+          format: 'pdf',
+          source: {
+            bytes: expect.any(Buffer),
+          },
+        },
+      });
+    });
+
+    it('should format Bedrock CSV document', async () => {
+      const req = createMockRequest() as ServerRequest;
+      const file = createMockDocFile(1, 'text/csv', 'data.csv');
+
+      const mockContent = Buffer.from('col1,col2\nval1,val2').toString('base64');
+      mockedGetFileStream.mockResolvedValue({
+        file,
+        content: mockContent,
+        metadata: file,
+      });
+
+      mockedValidateBedrockDocument.mockResolvedValue({ isValid: true });
+
+      const result = await encodeAndFormatDocuments(
+        req,
+        [file],
+        { provider: Providers.BEDROCK },
+        mockStrategyFunctions,
+      );
+
+      expect(result.documents).toHaveLength(1);
+      expect(result.documents[0]).toMatchObject({
+        type: 'document',
+        document: {
+          name: 'data_csv',
+          format: 'csv',
+          source: {
+            bytes: expect.any(Buffer),
+          },
+        },
+      });
+    });
+
+    it('should format Bedrock DOCX document', async () => {
+      const req = createMockRequest() as ServerRequest;
+      const mimeType = 'application/vnd.openxmlformats-officedocument.wordprocessingml.document';
+      const file = createMockDocFile(2, mimeType, 'report.docx');
+
+      const mockContent = Buffer.from('docx-binary-content').toString('base64');
+      mockedGetFileStream.mockResolvedValue({
+        file,
+        content: mockContent,
+        metadata: file,
+      });
+
+      mockedValidateBedrockDocument.mockResolvedValue({ isValid: true });
+
+      const result = await encodeAndFormatDocuments(
+        req,
+        [file],
+        { provider: Providers.BEDROCK },
+        mockStrategyFunctions,
+      );
+
+      expect(result.documents).toHaveLength(1);
+      expect(result.documents[0]).toMatchObject({
+        type: 'document',
+        document: {
+          name: 'report_docx',
+          format: 'docx',
+          source: {
+            bytes: expect.any(Buffer),
+          },
+        },
+      });
+    });
+
+    it('should format Bedrock plain text document', async () => {
+      const req = createMockRequest() as ServerRequest;
+      const file = createMockDocFile(0.5, 'text/plain', 'notes.txt');
+
+      const mockContent = Buffer.from('plain text content').toString('base64');
+      mockedGetFileStream.mockResolvedValue({
+        file,
+        content: mockContent,
+        metadata: file,
+      });
+
+      mockedValidateBedrockDocument.mockResolvedValue({ isValid: true });
+
+      const result = await encodeAndFormatDocuments(
+        req,
+        [file],
+        { provider: Providers.BEDROCK },
+        mockStrategyFunctions,
+      );
+
+      expect(result.documents).toHaveLength(1);
+      expect(result.documents[0]).toMatchObject({
+        type: 'document',
+        document: {
+          name: 'notes_txt',
+          format: 'txt',
+          source: {
+            bytes: expect.any(Buffer),
+          },
+        },
+      });
+    });
+
+    it('should reject Bedrock document when validation fails', async () => {
+      const req = createMockRequest() as ServerRequest;
+      const file = createMockDocFile(5, 'text/csv', 'big.csv');
+
+      const mockContent = Buffer.from('large-csv-content').toString('base64');
+      mockedGetFileStream.mockResolvedValue({
+        file,
+        content: mockContent,
+        metadata: file,
+      });
+
+      mockedValidateBedrockDocument.mockResolvedValue({
+        isValid: false,
+        error: 'File size (5.0MB) exceeds the 4.5MB limit for Bedrock',
+      });
+
+      await expect(
+        encodeAndFormatDocuments(
+          req,
+          [file],
+          { provider: Providers.BEDROCK },
+          mockStrategyFunctions,
+        ),
+      ).rejects.toThrow('Document validation failed');
+    });
+
     it('should format OpenAI document with responses API', async () => {
       const req = createMockRequest(15) as ServerRequest;
       const file = createMockFile(10);

packages/api/src/files/encode/document.ts

@@ -1,5 +1,10 @@
 import { Providers } from '@librechat/agents';
-import { isOpenAILikeProvider, isDocumentSupportedProvider } from 'librechat-data-provider';
+import {
+  isOpenAILikeProvider,
+  isBedrockDocumentType,
+  bedrockDocumentFormats,
+  isDocumentSupportedProvider,
+} from 'librechat-data-provider';
 import type { IMongoFile } from '@librechat/data-schemas';
 import type {
   AnthropicDocumentBlock,
@@ -7,8 +12,8 @@ import type {
   DocumentResult,
   ServerRequest,
 } from '~/types';
+import { validatePdf, validateBedrockDocument } from '~/files/validation';
 import { getFileStream, getConfiguredFileSizeLimit } from './utils';
-import { validatePdf } from '~/files/validation';
 
 /**
  * Processes and encodes document files for various providers
@@ -35,9 +40,15 @@ export async function encodeAndFormatDocuments(
   const encodingMethods: Record<string, StrategyFunctions> = {};
   const result: DocumentResult = { documents: [], files: [] };
 
-  const documentFiles = files.filter(
+  const isBedrock = provider === Providers.BEDROCK;
-    (file) => file.type === 'application/pdf' || file.type?.startsWith('application/'),
+  const isDocSupported = isDocumentSupportedProvider(provider);
-  );
+
+  const documentFiles = files.filter((file) => {
+    if (isBedrock && isBedrockDocumentType(file.type)) {
+      return true;
+    }
+    return file.type === 'application/pdf' || file.type?.startsWith('application/');
+  });
 
   if (!documentFiles.length) {
     return result;
@@ -45,7 +56,10 @@ export async function encodeAndFormatDocuments(
 
   const results = await Promise.allSettled(
     documentFiles.map((file) => {
-      if (file.type !== 'application/pdf' || !isDocumentSupportedProvider(provider)) {
+      const isProcessable = isBedrock
+        ? isBedrockDocumentType(file.type)
+        : file.type === 'application/pdf' && isDocSupported;
+      if (!isProcessable) {
         return Promise.resolve(null);
       }
       return getFileStream(req, file, encodingMethods, getStrategyFunctions);
@@ -68,14 +82,40 @@ export async function encodeAndFormatDocuments(
       continue;
     }
 
-    if (file.type === 'application/pdf' && isDocumentSupportedProvider(provider)) {
+    const configuredFileSizeLimit = getConfiguredFileSizeLimit(req, { provider, endpoint });
-      const pdfBuffer = Buffer.from(content, 'base64');
+    const mimeType = file.type ?? '';
 
-      /** Extract configured file size limit from fileConfig for this endpoint */
+    if (isBedrock && isBedrockDocumentType(mimeType)) {
-      const configuredFileSizeLimit = getConfiguredFileSizeLimit(req, {
+      const fileBuffer = Buffer.from(content, 'base64');
-        provider,
+      const format = bedrockDocumentFormats[mimeType];
-        endpoint,
+
+      const validation = await validateBedrockDocument(
+        fileBuffer.length,
+        mimeType,
+        fileBuffer,
+        configuredFileSizeLimit,
+      );
+
+      if (!validation.isValid) {
+        throw new Error(`Document validation failed: ${validation.error}`);
+      }
+
+      const sanitizedName = (file.filename || 'document')
+        .replace(/[^a-zA-Z0-9\s\-()[\]]/g, '_')
+        .slice(0, 200);
+      result.documents.push({
+        type: 'document',
+        document: {
+          name: sanitizedName,
+          format,
+          source: {
+            bytes: fileBuffer,
+          },
+        },
       });
+      result.files.push(metadata);
+    } else if (file.type === 'application/pdf' && isDocSupported) {
+      const pdfBuffer = Buffer.from(content, 'base64');
 
       const validation = await validatePdf(
         pdfBuffer,

packages/api/src/files/validation.spec.ts

@@ -1,6 +1,6 @@
 import { Providers } from '@librechat/agents';
 import { mbToBytes } from 'librechat-data-provider';
-import { validatePdf, validateVideo, validateAudio } from './validation';
+import { validatePdf, validateBedrockDocument, validateVideo, validateAudio } from './validation';
 
 describe('PDF Validation with fileConfig.endpoints.*.fileSizeLimit', () => {
   /** Helper to create a PDF buffer with valid header */
@@ -145,6 +145,122 @@ describe('PDF Validation with fileConfig.endpoints.*.fileSizeLimit', () => {
     });
   });
 
+  describe('validatePdf - Bedrock provider', () => {
+    const provider = Providers.BEDROCK;
+
+    it('should accept PDF within provider limit when no config provided', async () => {
+      const pdfBuffer = createMockPdfBuffer(3);
+      const result = await validatePdf(pdfBuffer, pdfBuffer.length, provider);
+
+      expect(result.isValid).toBe(true);
+      expect(result.error).toBeUndefined();
+    });
+
+    it('should reject PDF exceeding 4.5MB hard limit when no config provided', async () => {
+      const pdfBuffer = createMockPdfBuffer(5);
+      const result = await validatePdf(pdfBuffer, pdfBuffer.length, provider);
+
+      expect(result.isValid).toBe(false);
+      expect(result.error).toContain('4.5MB');
+    });
+
+    it('should use configured limit when it is lower than provider limit', async () => {
+      const configuredLimit = mbToBytes(2);
+      const pdfBuffer = createMockPdfBuffer(3);
+      const result = await validatePdf(pdfBuffer, pdfBuffer.length, provider, configuredLimit);
+
+      expect(result.isValid).toBe(false);
+      expect(result.error).toContain('2.0MB');
+    });
+
+    it('should clamp to 4.5MB hard limit even when config is higher', async () => {
+      const configuredLimit = mbToBytes(512);
+      const pdfBuffer = createMockPdfBuffer(5);
+      const result = await validatePdf(pdfBuffer, pdfBuffer.length, provider, configuredLimit);
+
+      expect(result.isValid).toBe(false);
+      expect(result.error).toContain('4.5MB');
+    });
+
+    it('should reject PDFs with invalid header', async () => {
+      const pdfBuffer = Buffer.alloc(1024);
+      pdfBuffer.write('INVALID', 0);
+      const result = await validatePdf(pdfBuffer, pdfBuffer.length, provider);
+
+      expect(result.isValid).toBe(false);
+      expect(result.error).toContain('PDF header');
+    });
+
+    it('should reject PDFs that are too small', async () => {
+      const pdfBuffer = Buffer.alloc(3);
+      const result = await validatePdf(pdfBuffer, pdfBuffer.length, provider);
+
+      expect(result.isValid).toBe(false);
+      expect(result.error).toContain('too small');
+    });
+  });
+
+  describe('validateBedrockDocument - non-PDF types', () => {
+    it('should accept CSV within 4.5MB limit', async () => {
+      const fileSize = 2 * 1024 * 1024;
+      const result = await validateBedrockDocument(fileSize, 'text/csv');
+
+      expect(result.isValid).toBe(true);
+      expect(result.error).toBeUndefined();
+    });
+
+    it('should accept DOCX within 4.5MB limit', async () => {
+      const fileSize = 3 * 1024 * 1024;
+      const mimeType = 'application/vnd.openxmlformats-officedocument.wordprocessingml.document';
+      const result = await validateBedrockDocument(fileSize, mimeType);
+
+      expect(result.isValid).toBe(true);
+      expect(result.error).toBeUndefined();
+    });
+
+    it('should reject non-PDF document exceeding 4.5MB hard limit', async () => {
+      const fileSize = 5 * 1024 * 1024;
+      const result = await validateBedrockDocument(fileSize, 'text/plain');
+
+      expect(result.isValid).toBe(false);
+      expect(result.error).toContain('4.5MB');
+    });
+
+    it('should clamp to 4.5MB even when config is higher for non-PDF', async () => {
+      const fileSize = 5 * 1024 * 1024;
+      const configuredLimit = mbToBytes(512);
+      const result = await validateBedrockDocument(fileSize, 'text/html', undefined, configuredLimit);
+
+      expect(result.isValid).toBe(false);
+      expect(result.error).toContain('4.5MB');
+    });
+
+    it('should use configured limit when lower than provider limit for non-PDF', async () => {
+      const fileSize = 3 * 1024 * 1024;
+      const configuredLimit = mbToBytes(2);
+      const result = await validateBedrockDocument(fileSize, 'text/markdown', undefined, configuredLimit);
+
+      expect(result.isValid).toBe(false);
+      expect(result.error).toContain('2.0MB');
+    });
+
+    it('should not run PDF header check on non-PDF types', async () => {
+      const buffer = Buffer.from('NOT-A-PDF-HEADER-but-valid-csv-content');
+      const result = await validateBedrockDocument(buffer.length, 'text/csv', buffer);
+
+      expect(result.isValid).toBe(true);
+    });
+
+    it('should still run PDF header check when mimeType is application/pdf', async () => {
+      const buffer = Buffer.alloc(1024);
+      buffer.write('INVALID', 0);
+      const result = await validateBedrockDocument(buffer.length, 'application/pdf', buffer);
+
+      expect(result.isValid).toBe(false);
+      expect(result.error).toContain('PDF header');
+    });
+  });
+
   describe('validatePdf - Google provider', () => {
     const provider = Providers.GOOGLE;
 

packages/api/src/files/validation.ts

@@ -1,6 +1,11 @@
 import { Providers } from '@librechat/agents';
 import { mbToBytes, isOpenAILikeProvider } from 'librechat-data-provider';
 
+export interface ValidationResult {
+  isValid: boolean;
+  error?: string;
+}
+
 export interface PDFValidationResult {
   isValid: boolean;
   error?: string;
@@ -31,6 +36,10 @@ export async function validatePdf(
     return validateAnthropicPdf(pdfBuffer, fileSize, configuredFileSizeLimit);
   }
 
+  if (provider === Providers.BEDROCK) {
+    return validateBedrockDocument(fileSize, 'application/pdf', pdfBuffer, configuredFileSizeLimit);
+  }
+
   if (isOpenAILikeProvider(provider)) {
     return validateOpenAIPdf(fileSize, configuredFileSizeLimit);
   }
@@ -113,6 +122,64 @@ async function validateAnthropicPdf(
   }
 }
 
+/**
+ * Validates a document against Bedrock's 4.5MB hard limit. PDF-specific header
+ * checks run only when the MIME type is `application/pdf`.
+ * @param fileSize - The file size in bytes
+ * @param mimeType - The MIME type of the document
+ * @param fileBuffer - The file buffer (used for PDF header validation)
+ * @param configuredFileSizeLimit - Optional configured file size limit from fileConfig (in bytes)
+ * @returns Promise that resolves to validation result
+ */
+export async function validateBedrockDocument(
+  fileSize: number,
+  mimeType: string,
+  fileBuffer?: Buffer,
+  configuredFileSizeLimit?: number,
+): Promise<ValidationResult> {
+  try {
+    /** Bedrock enforces a hard 4.5MB per-document limit at the API level; config can only lower it */
+    const providerLimit = mbToBytes(4.5);
+    const effectiveLimit =
+      configuredFileSizeLimit != null
+        ? Math.min(configuredFileSizeLimit, providerLimit)
+        : providerLimit;
+
+    if (fileSize > effectiveLimit) {
+      const limitMB = (effectiveLimit / (1024 * 1024)).toFixed(1);
+      return {
+        isValid: false,
+        error: `File size (${(fileSize / (1024 * 1024)).toFixed(1)}MB) exceeds the ${limitMB}MB limit for Bedrock`,
+      };
+    }
+
+    if (mimeType === 'application/pdf' && fileBuffer) {
+      if (fileBuffer.length < 5) {
+        return {
+          isValid: false,
+          error: 'Invalid PDF file: too small or corrupted',
+        };
+      }
+
+      const pdfHeader = fileBuffer.subarray(0, 5).toString();
+      if (!pdfHeader.startsWith('%PDF-')) {
+        return {
+          isValid: false,
+          error: 'Invalid PDF file: missing PDF header',
+        };
+      }
+    }
+
+    return { isValid: true };
+  } catch (error) {
+    console.error('Bedrock document validation error:', error);
+    return {
+      isValid: false,
+      error: 'Failed to validate document file',
+    };
+  }
+}
+
 /**
  * Validates if a PDF meets OpenAI's requirements
  * @param fileSize - The file size in bytes

packages/api/src/types/files.ts

@@ -1,6 +1,7 @@
+import type { BedrockDocumentFormat } from 'librechat-data-provider';
 import type { IMongoFile } from '@librechat/data-schemas';
-import type { ServerRequest } from './http';
 import type { Readable } from 'stream';
+import type { ServerRequest } from './http';
 export interface STTService {
   getInstance(): Promise<STTService>;
   getProviderSchema(req: ServerRequest): Promise<[string, object]>;
@@ -95,11 +96,24 @@ export interface OpenAIInputFileBlock {
   file_data: string;
 }
 
+/** Bedrock Converse API document block (passthrough via @langchain/aws) */
+export interface BedrockDocumentBlock {
+  type: 'document';
+  document: {
+    name: string;
+    format: BedrockDocumentFormat;
+    source: {
+      bytes: Buffer;
+    };
+  };
+}
+
 export type DocumentBlock =
   | AnthropicDocumentBlock
   | GoogleDocumentBlock
   | OpenAIFileBlock
-  | OpenAIInputFileBlock;
+  | OpenAIInputFileBlock
+  | BedrockDocumentBlock;
 
 export interface DocumentResult {
   documents: DocumentBlock[];

packages/data-provider/src/file-config.ts

@@ -139,6 +139,39 @@ export const retrievalMimeTypesList = [
 
 export const imageExtRegex = /\.(jpg|jpeg|png|gif|webp|heic|heif)$/i;
 
+/** @see https://docs.aws.amazon.com/bedrock/latest/APIReference/API_runtime_DocumentBlock.html */
+export type BedrockDocumentFormat =
+  | 'pdf'
+  | 'csv'
+  | 'doc'
+  | 'docx'
+  | 'xls'
+  | 'xlsx'
+  | 'html'
+  | 'txt'
+  | 'md';
+
+/** Maps MIME types to Bedrock Converse API document format values */
+export const bedrockDocumentFormats: Record<string, BedrockDocumentFormat> = {
+  'application/pdf': 'pdf',
+  'text/csv': 'csv',
+  'application/csv': 'csv',
+  'application/msword': 'doc',
+  'application/vnd.openxmlformats-officedocument.wordprocessingml.document': 'docx',
+  'application/vnd.ms-excel': 'xls',
+  'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet': 'xlsx',
+  'text/html': 'html',
+  'text/plain': 'txt',
+  'text/markdown': 'md',
+};
+
+export const isBedrockDocumentType = (mimeType?: string): boolean =>
+  mimeType != null && mimeType in bedrockDocumentFormats;
+
+/** File extensions accepted by Bedrock document uploads (for input accept attributes) */
+export const bedrockDocumentExtensions =
+  '.pdf,.csv,.doc,.docx,.xls,.xlsx,.html,.htm,.txt,.md,application/pdf,text/csv,application/csv,application/msword,application/vnd.openxmlformats-officedocument.wordprocessingml.document,application/vnd.ms-excel,application/vnd.openxmlformats-officedocument.spreadsheetml.sheet,text/html,text/plain,text/markdown';
+
 export const excelMimeTypes =
   /^application\/(vnd\.ms-excel|msexcel|x-msexcel|x-ms-excel|x-excel|x-dos_ms_excel|xls|x-xls|vnd\.openxmlformats-officedocument\.spreadsheetml\.sheet)$/;
 
@@ -146,7 +179,7 @@ export const textMimeTypes =
   /^(text\/(x-c|x-csharp|tab-separated-values|x-c\+\+|x-h|x-java|html|markdown|x-php|x-python|x-script\.python|x-ruby|x-tex|plain|css|vtt|javascript|csv|xml))$/;
 
 export const applicationMimeTypes =
-  /^(application\/(epub\+zip|csv|json|pdf|x-tar|x-sh|typescript|sql|yaml|x-parquet|vnd\.apache\.parquet|vnd\.coffeescript|vnd\.openxmlformats-officedocument\.(wordprocessingml\.document|presentationml\.presentation|spreadsheetml\.sheet)|xml|zip))$/;
+  /^(application\/(epub\+zip|csv|json|msword|pdf|x-tar|x-sh|typescript|sql|yaml|x-parquet|vnd\.apache\.parquet|vnd\.coffeescript|vnd\.openxmlformats-officedocument\.(wordprocessingml\.document|presentationml\.presentation|spreadsheetml\.sheet)|xml|zip))$/;
 
 export const imageMimeTypes = /^image\/(jpeg|gif|png|webp|heic|heif)$/;
 

packages/data-provider/src/schemas.ts

@@ -49,6 +49,7 @@ export enum Providers {
 export const documentSupportedProviders = new Set<string>([
   EModelEndpoint.anthropic,
   EModelEndpoint.openAI,
+  EModelEndpoint.bedrock,
   EModelEndpoint.custom,
   // handled in AttachFileMenu and DragDropModal since azureOpenAI only supports documents with Use Responses API set to true
   // EModelEndpoint.azureOpenAI,