Implement BYO zod v3 or v4

Following recommendations from https://zod.dev/library-authors

docs/quickstart.md

@@ -102,7 +102,7 @@ import cors from "cors";
 import express from "express";
 import fs from "node:fs/promises";
 import path from "node:path";
-import { z } from "zod";
+import * as z from "zod";
 
 const server = new McpServer({
   name: "My MCP App Server",

examples/basic-host/package.json

@@ -15,7 +15,7 @@
     "@modelcontextprotocol/sdk": "^1.22.0",
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
-    "zod": "^3.25.0"
+    "zod": "^4.1.13"
   },
   "devDependencies": {
     "@types/express": "^5.0.0",

examples/basic-server-react/package.json

@@ -15,7 +15,7 @@
     "@modelcontextprotocol/sdk": "^1.22.0",
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
-    "zod": "^3.25.0"
+    "zod": "^4.1.13"
   },
   "devDependencies": {
     "@types/cors": "^2.8.19",

examples/basic-server-vanillajs/package.json

@@ -13,7 +13,7 @@
   "dependencies": {
     "@modelcontextprotocol/ext-apps": "../..",
     "@modelcontextprotocol/sdk": "^1.22.0",
-    "zod": "^3.25.0"
+    "zod": "^4.1.13"
   },
   "devDependencies": {
     "@types/cors": "^2.8.19",

examples/budget-allocator-server/package.json

@@ -17,7 +17,7 @@
     "@modelcontextprotocol/ext-apps": "../..",
     "@modelcontextprotocol/sdk": "^1.22.0",
     "chart.js": "^4.4.0",
-    "zod": "^3.25.0"
+    "zod": "^4.1.13"
   },
   "devDependencies": {
     "@types/cors": "^2.8.19",

examples/cohort-heatmap-server/package.json

@@ -18,7 +18,7 @@
     "@modelcontextprotocol/sdk": "^1.22.0",
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
-    "zod": "^3.25.0"
+    "zod": "^4.1.13"
   },
   "devDependencies": {
     "@types/cors": "^2.8.19",

examples/customer-segmentation-server/package.json

@@ -17,7 +17,7 @@
     "@modelcontextprotocol/ext-apps": "../..",
     "@modelcontextprotocol/sdk": "^1.22.0",
     "chart.js": "^4.4.0",
-    "zod": "^3.25.0"
+    "zod": "^4.1.13"
   },
   "devDependencies": {
     "@types/cors": "^2.8.19",

examples/scenario-modeler-server/package.json

@@ -19,7 +19,7 @@
     "chart.js": "^4.4.0",
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
-    "zod": "^3.25.0"
+    "zod": "^4.1.13"
   },
   "devDependencies": {
     "@types/cors": "^2.8.19",

examples/system-monitor-server/package.json

@@ -18,7 +18,7 @@
     "@modelcontextprotocol/sdk": "^1.22.0",
     "chart.js": "^4.4.0",
     "systeminformation": "^5.27.11",
-    "zod": "^3.25.0"
+    "zod": "^4.1.13"
   },
   "devDependencies": {
     "@types/cors": "^2.8.19",

examples/threejs-server/package.json

@@ -19,7 +19,7 @@
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
     "three": "^0.181.0",
-    "zod": "^3.25.0"
+    "zod": "^4.1.13"
   },
   "devDependencies": {
     "@types/cors": "^2.8.19",

examples/wiki-explorer-server/package.json

@@ -17,7 +17,7 @@
     "@modelcontextprotocol/ext-apps": "../..",
     "@modelcontextprotocol/sdk": "^1.22.0",
     "cheerio": "^1.0.0",
-    "zod": "^3.25.0"
+    "zod": "^4.1.13"
   },
   "devDependencies": {
     "@types/cors": "^2.8.19",

package-lock.json

@@ -14,8 +14,7 @@
       "dependencies": {
         "@modelcontextprotocol/sdk": "^1.24.3",
         "react": "^19.2.0",
-        "react-dom": "^19.2.0",
+        "react-dom": "^19.2.0"
-        "zod": "^3.25"
       },
       "devDependencies": {
         "@types/bun": "^1.3.2",
@@ -32,7 +31,8 @@
         "ts-to-zod": "^5.1.0",
         "tsx": "^4.21.0",
         "typedoc": "^0.28.14",
-        "typescript": "^5.9.3"
+        "typescript": "^5.9.3",
+        "zod": "^4.1.13"
       },
       "optionalDependencies": {
         "@rollup/rollup-darwin-arm64": "^4.53.3",
@@ -40,6 +40,9 @@
         "@rollup/rollup-linux-arm64-gnu": "^4.53.3",
         "@rollup/rollup-linux-x64-gnu": "^4.53.3",
         "@rollup/rollup-win32-x64-msvc": "^4.53.3"
+      },
+      "peerDependencies": {
+        "zod": "^3.25.0 || ^4.0.0"
       }
     },
     "examples/basic-host": {
@@ -50,7 +53,7 @@
         "@modelcontextprotocol/sdk": "^1.22.0",
         "react": "^19.2.0",
         "react-dom": "^19.2.0",
-        "zod": "^3.25.0"
+        "zod": "^4.1.13"
       },
       "devDependencies": {
         "@types/express": "^5.0.0",
@@ -84,7 +87,7 @@
         "@modelcontextprotocol/sdk": "^1.22.0",
         "react": "^19.2.0",
         "react-dom": "^19.2.0",
-        "zod": "^3.25.0"
+        "zod": "^4.1.13"
       },
       "devDependencies": {
         "@types/cors": "^2.8.19",
@@ -115,7 +118,7 @@
       "dependencies": {
         "@modelcontextprotocol/ext-apps": "../..",
         "@modelcontextprotocol/sdk": "^1.22.0",
-        "zod": "^3.25.0"
+        "zod": "^4.1.13"
       },
       "devDependencies": {
         "@types/cors": "^2.8.19",
@@ -144,7 +147,7 @@
         "@modelcontextprotocol/ext-apps": "../..",
         "@modelcontextprotocol/sdk": "^1.22.0",
         "chart.js": "^4.4.0",
-        "zod": "^3.25.0"
+        "zod": "^4.1.13"
       },
       "devDependencies": {
         "@types/cors": "^2.8.19",
@@ -174,7 +177,7 @@
         "@modelcontextprotocol/sdk": "^1.22.0",
         "react": "^19.2.0",
         "react-dom": "^19.2.0",
-        "zod": "^3.25.0"
+        "zod": "^4.1.13"
       },
       "devDependencies": {
         "@types/cors": "^2.8.19",
@@ -206,7 +209,7 @@
         "@modelcontextprotocol/ext-apps": "../..",
         "@modelcontextprotocol/sdk": "^1.22.0",
         "chart.js": "^4.4.0",
-        "zod": "^3.25.0"
+        "zod": "^4.1.13"
       },
       "devDependencies": {
         "@types/cors": "^2.8.19",
@@ -237,7 +240,7 @@
         "chart.js": "^4.4.0",
         "react": "^19.2.0",
         "react-dom": "^19.2.0",
-        "zod": "^3.25.0"
+        "zod": "^4.1.13"
       },
       "devDependencies": {
         "@types/cors": "^2.8.19",
@@ -270,7 +273,7 @@
         "@modelcontextprotocol/sdk": "^1.22.0",
         "chart.js": "^4.4.0",
         "systeminformation": "^5.27.11",
-        "zod": "^3.25.0"
+        "zod": "^4.1.13"
       },
       "devDependencies": {
         "@types/cors": "^2.8.19",
@@ -301,7 +304,7 @@
         "react": "^19.2.0",
         "react-dom": "^19.2.0",
         "three": "^0.181.0",
-        "zod": "^3.25.0"
+        "zod": "^4.1.13"
       },
       "devDependencies": {
         "@types/cors": "^2.8.19",
@@ -334,7 +337,7 @@
         "@modelcontextprotocol/ext-apps": "../..",
         "@modelcontextprotocol/sdk": "^1.22.0",
         "cheerio": "^1.0.0",
-        "zod": "^3.25.0"
+        "zod": "^4.1.13"
       },
       "devDependencies": {
         "@types/cors": "^2.8.19",
@@ -5696,16 +5699,6 @@
         "url": "https://paulmillr.com/funding/"
       }
     },
-    "node_modules/ts-to-zod/node_modules/zod": {
-      "version": "4.1.13",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-4.1.13.tgz",
-      "integrity": "sha512-AvvthqfqrAhNH9dnfmrfKzX5upOdjUVJYFqNSlkmGf64gRaTzlPwz99IHYnVs28qYAybvAlBV+H7pn0saFY4Ig==",
-      "dev": true,
-      "license": "MIT",
-      "funding": {
-        "url": "https://github.com/sponsors/colinhacks"
-      }
-    },
     "node_modules/tslib": {
       "version": "2.8.1",
       "dev": true,
@@ -6329,7 +6322,9 @@
       }
     },
     "node_modules/zod": {
-      "version": "3.25.76",
+      "version": "4.1.13",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.1.13.tgz",
+      "integrity": "sha512-AvvthqfqrAhNH9dnfmrfKzX5upOdjUVJYFqNSlkmGf64gRaTzlPwz99IHYnVs28qYAybvAlBV+H7pn0saFY4Ig==",
       "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"

package.json

@@ -64,13 +64,16 @@
     "ts-to-zod": "^5.1.0",
     "tsx": "^4.21.0",
     "typedoc": "^0.28.14",
-    "typescript": "^5.9.3"
+    "typescript": "^5.9.3",
+    "zod": "^4.1.13"
+  },
+  "peerDependencies": {
+    "zod": "^3.25.0 || ^4.0.0"
   },
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.24.3",
     "react": "^19.2.0",
-    "react-dom": "^19.2.0",
+    "react-dom": "^19.2.0"
-    "zod": "^3.25"
   },
   "optionalDependencies": {
     "@rollup/rollup-darwin-arm64": "^4.53.3",

scripts/generate-schemas.ts

@@ -181,14 +181,14 @@ function postProcess(content: string): string {
   // 1. Update import to use zod/v4
   content = content.replace(
     'import { z } from "zod";',
-    'import { z } from "zod/v4";',
+    'import * as z from "zod/v4";',
   );
 
   // 2. Add MCP SDK schema imports
   const mcpImports = EXTERNAL_TYPE_SCHEMAS.join(",\n  ");
   content = content.replace(
-    'import { z } from "zod/v4";',
+    'import * as z from "zod/v4";',
-    `import { z } from "zod/v4";
+    `import * as z from "zod/v4";
 import {
   ${mcpImports},
 } from "@modelcontextprotocol/sdk/types.js";`,
@@ -262,7 +262,7 @@ function replaceRecordAndWithLooseObject(content: string): string {
 function postProcessTests(content: string): string {
   content = content.replace(
     'import { z } from "zod";',
-    'import { z } from "zod/v4";',
+    'import * as z from "zod/v4";',
   );
 
   content = content.replace(

src/app-bridge.ts

@@ -1,5 +1,5 @@
 import { Client } from "@modelcontextprotocol/sdk/client/index.js";
-import { ZodLiteral, ZodObject } from "zod/v4";
+import * as z from "zod/v4/core";
 
 import { Transport } from "@modelcontextprotocol/sdk/shared/transport.js";
 import {
@@ -838,10 +838,10 @@ export class AppBridge extends Protocol<Request, Notification, Result> {
   }
 
   private forwardRequest<
-    Req extends ZodObject<{
+    Req extends z.$ZodObject<{
-      method: ZodLiteral<string>;
+      method: z.$ZodLiteral<string>;
     }>,
-    Res extends ZodObject<{}>,
+    Res extends z.$ZodObject<{}>,
   >(requestSchema: Req, resultSchema: Res) {
     this.setRequestHandler(requestSchema, async (request, extra) => {
       console.log(`Forwarding request ${request.method} from MCP UI client`);
@@ -851,7 +851,7 @@ export class AppBridge extends Protocol<Request, Notification, Result> {
     });
   }
   private forwardNotification<
-    N extends ZodObject<{ method: ZodLiteral<string> }>,
+    N extends z.$ZodObject<{ method: z.$ZodLiteral<string> }>,
   >(notificationSchema: N) {
     this.setNotificationHandler(notificationSchema, async (notification) => {
       console.log(

src/generated/schema.json

@@ -1212,7 +1212,7 @@
                           "lastModified": {
                             "type": "string",
                             "format": "date-time",
-                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-]\\d{2}:\\d{2})))$"
+                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$"
                           }
                         },
                         "additionalProperties": false
@@ -1259,7 +1259,7 @@
                           "lastModified": {
                             "type": "string",
                             "format": "date-time",
-                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-]\\d{2}:\\d{2})))$"
+                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$"
                           }
                         },
                         "additionalProperties": false
@@ -1306,7 +1306,7 @@
                           "lastModified": {
                             "type": "string",
                             "format": "date-time",
-                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-]\\d{2}:\\d{2})))$"
+                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$"
                           }
                         },
                         "additionalProperties": false
@@ -1380,7 +1380,7 @@
                           "lastModified": {
                             "type": "string",
                             "format": "date-time",
-                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-]\\d{2}:\\d{2})))$"
+                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$"
                           }
                         },
                         "additionalProperties": false
@@ -1473,7 +1473,7 @@
                           "lastModified": {
                             "type": "string",
                             "format": "date-time",
-                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-]\\d{2}:\\d{2})))$"
+                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$"
                           }
                         },
                         "additionalProperties": false
@@ -1871,7 +1871,7 @@
                           "lastModified": {
                             "type": "string",
                             "format": "date-time",
-                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-]\\d{2}:\\d{2})))$"
+                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$"
                           }
                         },
                         "additionalProperties": false
@@ -1918,7 +1918,7 @@
                           "lastModified": {
                             "type": "string",
                             "format": "date-time",
-                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-]\\d{2}:\\d{2})))$"
+                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$"
                           }
                         },
                         "additionalProperties": false
@@ -1965,7 +1965,7 @@
                           "lastModified": {
                             "type": "string",
                             "format": "date-time",
-                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-]\\d{2}:\\d{2})))$"
+                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$"
                           }
                         },
                         "additionalProperties": false
@@ -2039,7 +2039,7 @@
                           "lastModified": {
                             "type": "string",
                             "format": "date-time",
-                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-]\\d{2}:\\d{2})))$"
+                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$"
                           }
                         },
                         "additionalProperties": false
@@ -2132,7 +2132,7 @@
                           "lastModified": {
                             "type": "string",
                             "format": "date-time",
-                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-]\\d{2}:\\d{2})))$"
+                            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$"
                           }
                         },
                         "additionalProperties": false

src/generated/schema.test.ts

@@ -1,7 +1,7 @@
 // Generated by ts-to-zod
 // Integration tests verifying schemas match TypeScript types
 // Run: npm run generate:schemas
-import { z } from "zod/v4";
+import * as z from "zod/v4";
 
 import * as spec from "../spec.types.js";
 import * as generated from "./schema.js";

src/generated/schema.ts

@@ -1,7 +1,7 @@
 // Generated by ts-to-zod
 // Post-processed for Zod v4 and MCP SDK compatibility
 // Run: npm run generate:schemas
-import { z } from "zod/v4";
+import * as z from "zod/v4";
 import {
   ContentBlockSchema,
   CallToolResultSchema,