feat: validate manifest version during pack command

Add validation to ensure the manifest_version matches the current expected
version (0.2) during the mcpb pack command. This prevents users from
packing extensions with outdated or incorrect manifest versions.

Changes:
- Add CURRENT_MANIFEST_VERSION constant to centralize version management
- Validate manifest version in pack command before creating bundle
- Update init command to use version constant
- Update tests to use version constant
- Fix prettier formatting issues

README.md

@@ -3,6 +3,7 @@
 > **⚠️ IMPORTANT NOTICE: This project is being renamed from DXT (Desktop Extensions) to MCPB (MCP Bundles)**
 >
 > If you're looking for the DXT tools, they have been renamed to MCPB. Please update your dependencies and tooling:
+>
 > - `dxt` CLI is now `mcpb`
 > - `.dxt` files are now `.mcpb` files
 > - `@anthropic-ai/dxt` package will be moved to `@anthropic-ai/mcpb`

scripts/build-mcpb-schema.js

@@ -1,4 +1,7 @@
-import { McpbManifestSchema, McpbSignatureInfoSchema } from "../dist/schemas.js";
+import {
+  McpbManifestSchema,
+  McpbSignatureInfoSchema,
+} from "../dist/schemas.js";
 import * as z from "zod/v4";
 import fs from "node:fs/promises";
 import path from "node:path";

src/cli/init.ts

@@ -2,6 +2,7 @@ import { confirm, input, select } from "@inquirer/prompts";
 import { existsSync, readFileSync, writeFileSync } from "fs";
 import { basename, join, resolve } from "path";
 
+import { CURRENT_MANIFEST_VERSION } from "../schemas.js";
 import type { McpbManifest } from "../types.js";
 
 interface PackageJson {
@@ -773,7 +774,7 @@ export function buildManifest(
   const { keywords, license, repository } = optionalFields;
 
   return {
-    manifest_version: "0.1",
+    manifest_version: CURRENT_MANIFEST_VERSION,
     name,
     ...(displayName && displayName !== name
       ? { display_name: displayName }

src/cli/pack.ts

@@ -13,7 +13,7 @@ import { basename, join, relative, resolve, sep } from "path";
 
 import { getAllFilesWithCount, readMcpbIgnorePatterns } from "../node/files.js";
 import { validateManifest } from "../node/validate.js";
-import { McpbManifestSchema } from "../schemas.js";
+import { CURRENT_MANIFEST_VERSION, McpbManifestSchema } from "../schemas.js";
 import { getLogger } from "../shared/log.js";
 import { initExtension } from "./init.js";
 
@@ -101,6 +101,17 @@ export async function packExtension({
     return false;
   }
 
+  const manifestVersion = manifest.manifest_version || manifest.dxt_version;
+  if (manifestVersion !== CURRENT_MANIFEST_VERSION) {
+    logger.error(
+      `ERROR: Manifest version mismatch. Expected "${CURRENT_MANIFEST_VERSION}", found "${manifestVersion}"`,
+    );
+    logger.error(
+      `  Please update the manifest_version in your manifest.json to "${CURRENT_MANIFEST_VERSION}"`,
+    );
+    return false;
+  }
+
   // Determine output path
   const extensionName = basename(resolvedPath);
   const finalOutputPath = outputPath

src/schemas-loose.ts

@@ -79,38 +79,39 @@ export const McpbUserConfigValuesSchema = z.record(
 export const McpbManifestSchema = z
   .object({
     $schema: z.string().optional(),
-    dxt_version: z.string().optional().describe("@deprecated Use manifest_version instead"),
+    dxt_version: z
+      .string()
+      .optional()
+      .describe("@deprecated Use manifest_version instead"),
     manifest_version: z.string().optional(),
-  name: z.string(),
+    name: z.string(),
-  display_name: z.string().optional(),
+    display_name: z.string().optional(),
-  version: z.string(),
+    version: z.string(),
-  description: z.string(),
+    description: z.string(),
-  long_description: z.string().optional(),
+    long_description: z.string().optional(),
-  author: McpbManifestAuthorSchema,
+    author: McpbManifestAuthorSchema,
-  repository: McpbManifestRepositorySchema.optional(),
+    repository: McpbManifestRepositorySchema.optional(),
-  homepage: z.string().url().optional(),
+    homepage: z.string().url().optional(),
-  documentation: z.string().url().optional(),
+    documentation: z.string().url().optional(),
-  support: z.string().url().optional(),
+    support: z.string().url().optional(),
-  icon: z.string().optional(),
+    icon: z.string().optional(),
-  screenshots: z.array(z.string()).optional(),
+    screenshots: z.array(z.string()).optional(),
-  server: McpbManifestServerSchema,
+    server: McpbManifestServerSchema,
-  tools: z.array(McpbManifestToolSchema).optional(),
+    tools: z.array(McpbManifestToolSchema).optional(),
-  tools_generated: z.boolean().optional(),
+    tools_generated: z.boolean().optional(),
-  prompts: z.array(McpbManifestPromptSchema).optional(),
+    prompts: z.array(McpbManifestPromptSchema).optional(),
-  prompts_generated: z.boolean().optional(),
+    prompts_generated: z.boolean().optional(),
-  keywords: z.array(z.string()).optional(),
+    keywords: z.array(z.string()).optional(),
-  license: z.string().optional(),
+    license: z.string().optional(),
-  compatibility: McpbManifestCompatibilitySchema.optional(),
+    compatibility: McpbManifestCompatibilitySchema.optional(),
-  user_config: z
+    user_config: z
-    .record(z.string(), McpbUserConfigurationOptionSchema)
+      .record(z.string(), McpbUserConfigurationOptionSchema)
-    .optional(),
+      .optional(),
   })
-  .refine(
+  .refine((data) => !!(data.dxt_version || data.manifest_version), {
-    (data) => !!(data.dxt_version || data.manifest_version),
+    message:
-    {
+      "Either 'dxt_version' (deprecated) or 'manifest_version' must be provided",
-      message: "Either 'dxt_version' (deprecated) or 'manifest_version' must be provided",
+  });
-    }
-  );
 
 export const McpbSignatureInfoSchema = z.object({
   status: z.enum(["signed", "unsigned", "self-signed"]),

src/schemas.ts

@@ -1,5 +1,7 @@
 import * as z from "zod";
 
+export const CURRENT_MANIFEST_VERSION = "0.2";
+
 export const McpServerConfigSchema = z.strictObject({
   command: z.string(),
   args: z.array(z.string()).optional(),
@@ -79,7 +81,10 @@ export const McpbUserConfigValuesSchema = z.record(
 export const McpbManifestSchema = z
   .strictObject({
     $schema: z.string().optional(),
-    dxt_version: z.string().optional().describe("@deprecated Use manifest_version instead"),
+    dxt_version: z
+      .string()
+      .optional()
+      .describe("@deprecated Use manifest_version instead"),
     manifest_version: z.string().optional(),
     name: z.string(),
     display_name: z.string().optional(),
@@ -106,12 +111,10 @@ export const McpbManifestSchema = z
       .record(z.string(), McpbUserConfigurationOptionSchema)
       .optional(),
   })
-  .refine(
+  .refine((data) => !!(data.dxt_version || data.manifest_version), {
-    (data) => !!(data.dxt_version || data.manifest_version),
+    message:
-    {
+      "Either 'dxt_version' (deprecated) or 'manifest_version' must be provided",
-      message: "Either 'dxt_version' (deprecated) or 'manifest_version' must be provided",
+  });
-    }
-  );
 
 export const McpbSignatureInfoSchema = z.strictObject({
   status: z.enum(["signed", "unsigned", "self-signed"]),

test/cli.test.ts

@@ -2,6 +2,8 @@ import { execSync } from "node:child_process";
 import fs from "node:fs";
 import { join } from "node:path";
 
+import { CURRENT_MANIFEST_VERSION } from "../src/schemas.js";
+
 interface ExecSyncError extends Error {
   stdout: Buffer;
   stderr: Buffer;
@@ -91,7 +93,7 @@ describe("DXT CLI", () => {
       fs.writeFileSync(
         join(tempDir, "manifest.json"),
         JSON.stringify({
-          manifest_version: "1.0",
+          manifest_version: CURRENT_MANIFEST_VERSION,
           name: "Test Extension",
           version: "1.0.0",
           description: "A test extension",
@@ -188,7 +190,7 @@ describe("DXT CLI", () => {
         fs.writeFileSync(
           join(tempExecDir, "manifest.json"),
           JSON.stringify({
-            manifest_version: "1.0",
+            manifest_version: CURRENT_MANIFEST_VERSION,
             name: "Test Executable Extension",
             version: "1.0.0",
             description: "A test extension with executable files",

test/init.test.ts

@@ -10,6 +10,7 @@ import {
   getDefaultRepositoryUrl,
   readPackageJson,
 } from "../src/cli/init.js";
+import { CURRENT_MANIFEST_VERSION } from "../src/schemas.js";
 
 // Mock the fs module
 jest.mock("fs", () => ({
@@ -217,7 +218,7 @@ describe("init functions", () => {
       );
 
       expect(manifest).toEqual({
-        manifest_version: "0.1",
+        manifest_version: CURRENT_MANIFEST_VERSION,
         name: "test-extension",
         version: "1.0.0",
         description: "Test description",
@@ -303,7 +304,7 @@ describe("init functions", () => {
       );
 
       expect(manifest).toEqual({
-        manifest_version: "0.1",
+        manifest_version: CURRENT_MANIFEST_VERSION,
         name: "test-extension",
         display_name: "Test Extension",
         version: "1.0.0",