Rename dxt (Desktop Extensions) to mcpb (MCP Bundle)

.dxt extension becomes .mcpb
The manifest.json schema deprecates dxt_version

Author: aiqlcom

.gitignore

@@ -5,7 +5,7 @@
 node_modules/
 
 # Desktop extensions
-src/main/assets/dxt
+src/main/assets/mcpb
 
 # Log files
 *.log

README.md

@@ -193,7 +193,7 @@ Review our [Security Policy](SECURITY.md). Do not file a public issue for securi
 
 ![](https://gcore.jsdelivr.net/gh/AI-QL/.github/public/tuui2/1_primitive.jpg)
 
-### Desktop extensions (.dxt) support
+### MCP bundles (.mcpb) support
 
 ![](https://gcore.jsdelivr.net/gh/AI-QL/.github/public/tuui2/2_dxt.jpg)
 

eslint.config.mjs

@@ -21,7 +21,7 @@ export default defineConfig([
     'buildAssets/icons/',
     '**/dist/',
     '**/release/',
-    '**/dxt/',
+    '**/mcpb/',
     '**/.idea/',
     '**/.vscode/',
     '**/.github/'

package-lock.json

@@ -43,7 +43,7 @@
     "node": ">=22.12.0"
   },
   "dependencies": {
-    "@anthropic-ai/dxt": "^0.2.6",
+    "@anthropic-ai/mcpb": "^1.1.0",
     "@el3um4s/run-vbs": "^1.1.2",
     "@fontsource/inter": "^5.2.6",
     "@mdi/font": "^7.4.47",

package.json

@@ -20,7 +20,7 @@ import { disconnect } from './mcp/connection'
 import { loadConfig } from './mcp/init'
 import { loadLlmFile } from './mcp/config'
 import { unpackDxt, getManifest } from './mcp/dxt'
-import { DxtManifest } from '@anthropic-ai/dxt'
+import { McpbManifest } from '@anthropic-ai/mcpb'
 
 import { closeCommandPicker } from './aid/commands'
 
@@ -31,7 +31,7 @@ const handlerRegistry = new Map<string, Function>()
 
 interface ManifestResponse {
   status: 'success' | 'error'
-  result?: Record<string, DxtManifest> // Object with string keys and DXT values
+  result?: Record<string, McpbManifest> // Object with string keys and DXT values
   error?: string
 }
 
@@ -53,7 +53,7 @@ export default class IPCs {
     })
 
     ipcMain.handle('msgRequestGetDxtUrl', () => {
-      return pathToFileURL(normalize(resolve(Constants.ASSETS_PATH.dxt))).toString()
+      return pathToFileURL(normalize(resolve(Constants.ASSETS_PATH.mcpb))).toString()
     })
 
     ipcMain.handle('msgMcpServersStop', async () => {
@@ -111,7 +111,7 @@ export default class IPCs {
     })
 
     ipcMain.on('msgOpenDxtFilePath', async (event: IpcMainEvent, name: string) => {
-      shell.openPath(resolve(join(Constants.ASSETS_PATH.dxt, name)))
+      shell.openPath(resolve(join(Constants.ASSETS_PATH.mcpb, name)))
     })
 
     ipcMain.on('msgOpenPath', async (event: IpcMainEvent, name: string) => {
@@ -185,12 +185,12 @@ export default class IPCs {
       try {
         const buffer = Buffer.from(data)
         const saveOption = Constants.getDxtSource(name)
-        const filePath = saveOption.dxtPath
+        const filePath = saveOption.mcpbPath
         const dirPath = saveOption.outputDir
         if (!existsSync(dirPath)) {
           mkdirSync(dirPath, { recursive: true })
         }
-        console.log('DXT to be saved in: ', filePath)
+        console.log('MCP bundle to be saved in: ', filePath)
 
         writeFileSync(filePath, buffer, { encoding: null })
 
@@ -211,18 +211,18 @@ export default class IPCs {
     })
 
     ipcMain.handle('list-manifests', async (_event: IpcMainEvent): Promise<ManifestResponse> => {
-      const dxtPath = Constants.ASSETS_PATH.dxt
+      const mcpbPath = Constants.ASSETS_PATH.mcpb
 
       try {
-        const entries = readdirSync(dxtPath, { withFileTypes: true })
+        const entries = readdirSync(mcpbPath, { withFileTypes: true })
         console.log(entries)
 
         // Transform the array into an object
         const manifestsObject = entries
           .filter((dirent) => dirent.isDirectory())
           .reduce(
             (acc, dirent) => {
-              acc[dirent.name] = getManifest(join(dxtPath, dirent.name))
+              acc[dirent.name] = getManifest(join(mcpbPath, dirent.name))
               return acc
             },
             {} as Record<string, any>

src/main/IPCs.ts

@@ -45,7 +45,7 @@
     {
       "img": "https://www.anthropic.com/_next/image?url=https%3A%2F%2Fwww-cdn.anthropic.com%2Fimages%2F4zrzovbb%2Fwebsite%2Fd48f3ea1218a4b90450b9ab8134fa0e24db5a167-720x542.png&w=1920&q=75",
       "title": "Desktop Extensions",
-      "subtitle": "Desktop Extensions (.dxt files) solve these problems by bundling an entire MCP server, including all dependencies into a single installable package.",
+      "subtitle": "Desktop Extensions (.dxt/.mcpb files) solve these problems by bundling an entire MCP server, including all dependencies into a single installable package.",
       "duration": "10",
       "link": "https://www.anthropic.com/engineering/desktop-extensions"
     },

src/main/assets/config/startup.json

@@ -1,12 +1,12 @@
 import {
   unpackExtension,
   getMcpConfigForManifest,
-  DxtManifestSchema,
-  DxtManifest,
-  DxtUserConfigValues,
+  McpbManifestSchema,
+  McpbManifest,
+  McpbUserConfigValues,
   McpServerConfig,
   Logger
-} from '@anthropic-ai/dxt'
+} from '@anthropic-ai/mcpb'
 
 import { existsSync, readFileSync, statSync } from 'fs'
 import { join, resolve, sep } from 'path'
@@ -18,8 +18,8 @@ const mockSystemDirs = {
 
 export async function getMcpConfigForDxt(
   basePath: string,
-  baseManifest: DxtManifest,
-  userConfig: DxtUserConfigValues
+  baseManifest: McpbManifest,
+  userConfig: McpbUserConfigValues
 ): Promise<McpServerConfig> {
   const logMessages: string[] = []
   const logger: Logger = {
@@ -44,13 +44,13 @@ export async function getMcpConfigForDxt(
   }
 }
 export async function unpackDxt(dxtUnpackOption: {
-  dxtPath: string
+  mcpbPath: string
   outputDir: string
 }): Promise<boolean> {
   return unpackExtension(dxtUnpackOption)
 }
 
-export function getManifest(inputPath: string): false | DxtManifest {
+export function getManifest(inputPath: string): false | McpbManifest {
   try {
     const resolvedPath = resolve(inputPath)
     let manifestPath = resolvedPath
@@ -63,7 +63,7 @@ export function getManifest(inputPath: string): false | DxtManifest {
     const manifestContent = readFileSync(manifestPath, 'utf-8')
     const manifestData = JSON.parse(manifestContent)
 
-    const result = DxtManifestSchema.safeParse(manifestData)
+    const result = McpbManifestSchema.safeParse(manifestData)
 
     if (result.success) {
       console.log('Manifest is valid!')

src/main/mcp/dxt.ts

@@ -34,9 +34,9 @@ export async function initClients(
     const clientPromises = entries.map(async ([name, object]) => {
       if (object.type === 'metadata__stdio_config') {
         return initSingleClient(name, object.config, callback)
-      } else if (object.type === 'metadata__dxt_manifest') {
+      } else if (object.type === 'metadata__mcpb_manifest') {
         const stdioConfig = await getMcpConfigForDxt(
-          Constants.getPosixPath(path.join(Constants.ASSETS_PATH.dxt, name)),
+          Constants.getPosixPath(path.join(Constants.ASSETS_PATH.mcpb, name)),
           object.config,
           object.user_config
         )

src/main/mcp/init.ts

@@ -14,7 +14,7 @@ import {
   ElicitRequest
 } from '@modelcontextprotocol/sdk/types.js'
 
-import { DxtUserConfigValues, DxtManifest } from '@anthropic-ai/dxt'
+import { McpbUserConfigValues, McpbManifest } from '@anthropic-ai/mcpb'
 
 import { StdioServerParameters } from '@modelcontextprotocol/sdk/client/stdio.js'
 
@@ -61,9 +61,9 @@ type McpMetadataStdio = {
 
 type McpMetadataDxt = {
   name: string
-  type: 'metadata__dxt_manifest'
-  config: DxtManifest
-  user_config?: DxtUserConfigValues
+  type: 'metadata__mcpb_manifest'
+  config: McpbManifest
+  user_config?: McpbUserConfigValues
 }
 
 type CommandRequest = {