From 3a0d4a86352ec90e4ed4cc9e014339f0df00da25 Mon Sep 17 00:00:00 2001
From: Joan Xie <joan@anthropic.com>
Date: Wed, 24 Sep 2025 13:57:19 -0700
Subject: [PATCH] feat: create schema version map with CURRENT_MANIFEST_SCHEMA
 selector

---
 src/cli/init.ts         |  4 ++--
 src/cli/pack.ts         |  4 ++--
 src/node/validate.ts    |  7 +++----
 src/shared/constants.ts | 35 +++++++++++++++++++++++++++++++++++
 4 files changed, 42 insertions(+), 8 deletions(-)
 create mode 100644 src/shared/constants.ts

diff --git a/src/cli/init.ts b/src/cli/init.ts
index 0d2df69..17b95a9 100644
--- a/src/cli/init.ts
+++ b/src/cli/init.ts
@@ -2,7 +2,7 @@ import { confirm, input, select } from "@inquirer/prompts";
 import { existsSync, readFileSync, writeFileSync } from "fs";
 import { basename, join, resolve } from "path";
 
-import { MANIFEST_VERSION } from "../schemas/0.2.js";
+import { CURRENT_MANIFEST_VERSION } from "../shared/constants.js";
 import type { McpbManifest } from "../types.js";
 
 interface PackageJson {
@@ -774,7 +774,7 @@ export function buildManifest(
   const { keywords, license, repository } = optionalFields;
 
   return {
-    manifest_version: MANIFEST_VERSION,
+    manifest_version: CURRENT_MANIFEST_VERSION,
     name,
     ...(displayName && displayName !== name
       ? { display_name: displayName }
diff --git a/src/cli/pack.ts b/src/cli/pack.ts
index 30ce068..d7cb6f5 100644
--- a/src/cli/pack.ts
+++ b/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 { MANIFEST_VERSION, McpbManifestSchema } from "../schemas/0.2.js";
+import { CURRENT_MANIFEST_VERSION, CURRENT_MANIFEST_SCHEMA } from "../shared/constants.js";
 import { getLogger } from "../shared/log.js";
 import { initExtension } from "./init.js";
 
@@ -92,7 +92,7 @@ export async function packExtension({
   try {
     const manifestContent = readFileSync(manifestPath, "utf-8");
     const manifestData = JSON.parse(manifestContent);
-    manifest = McpbManifestSchema.parse(manifestData);
+    manifest = CURRENT_MANIFEST_SCHEMA.parse(manifestData);
   } catch (error) {
     logger.error("ERROR: Failed to parse manifest.json");
     if (error instanceof Error) {
diff --git a/src/node/validate.ts b/src/node/validate.ts
index 9e3340d..3be269e 100644
--- a/src/node/validate.ts
+++ b/src/node/validate.ts
@@ -6,8 +6,7 @@ import { join, resolve } from "path";
 import prettyBytes from "pretty-bytes";
 
 import { unpackExtension } from "../cli/unpack.js";
-import { McpbManifestSchema } from "../schemas/0.2.js";
-import { McpbManifestSchema as LooseMcpbManifestSchema } from "../schemas_loose/0.2.js";
+import { CURRENT_MANIFEST_SCHEMA, CURRENT_MANIFEST_SCHEMA_LOOSE } from "../shared/constants.js";
 
 export function validateManifest(inputPath: string): boolean {
   try {
@@ -22,7 +21,7 @@ export function validateManifest(inputPath: string): boolean {
     const manifestContent = readFileSync(manifestPath, "utf-8");
     const manifestData = JSON.parse(manifestContent);
 
-    const result = McpbManifestSchema.safeParse(manifestData);
+    const result = CURRENT_MANIFEST_SCHEMA.safeParse(manifestData);
 
     if (result.success) {
       console.log("Manifest schema validation passes!");
@@ -72,7 +71,7 @@ export async function cleanMcpb(inputPath: string) {
     const manifestPath = resolve(unpackPath, "manifest.json");
     const originalManifest = await fs.readFile(manifestPath, "utf-8");
     const manifestData = JSON.parse(originalManifest);
-    const result = LooseMcpbManifestSchema.safeParse(manifestData);
+    const result = CURRENT_MANIFEST_SCHEMA_LOOSE.safeParse(manifestData);
 
     if (!result.success) {
       throw new Error(
diff --git a/src/shared/constants.ts b/src/shared/constants.ts
new file mode 100644
index 0000000..f1c1359
--- /dev/null
+++ b/src/shared/constants.ts
@@ -0,0 +1,35 @@
+import { McpbManifestSchema as ManifestSchemaV0_1 } from "../schemas/0.1.js";
+import { McpbManifestSchema as ManifestSchemaV0_2 } from "../schemas/0.2.js";
+import { McpbManifestSchema as LooseManifestSchemaV0_1 } from "../schemas_loose/0.1.js";
+import { McpbManifestSchema as LooseManifestSchemaV0_2 } from "../schemas_loose/0.2.js";
+
+/**
+ * Current manifest version - the version that new manifests should use
+ */
+export const CURRENT_MANIFEST_VERSION = "0.2" as const;
+
+/**
+ * Map of manifest versions to their strict schemas
+ */
+export const MANIFEST_SCHEMAS = {
+  "0.1": ManifestSchemaV0_1,
+  "0.2": ManifestSchemaV0_2,
+} as const;
+
+/**
+ * Map of manifest versions to their loose schemas (with passthrough)
+ */
+export const MANIFEST_SCHEMAS_LOOSE = {
+  "0.1": LooseManifestSchemaV0_1,
+  "0.2": LooseManifestSchemaV0_2,
+} as const;
+
+/**
+ * Get the current manifest schema based on CURRENT_MANIFEST_VERSION
+ */
+export const CURRENT_MANIFEST_SCHEMA = MANIFEST_SCHEMAS[CURRENT_MANIFEST_VERSION];
+
+/**
+ * Get the current loose manifest schema based on CURRENT_MANIFEST_VERSION
+ */
+export const CURRENT_MANIFEST_SCHEMA_LOOSE = MANIFEST_SCHEMAS_LOOSE[CURRENT_MANIFEST_VERSION];