diff --git a/bun.lock b/bun.lock
index ea8d6b4..f405aee 100644
--- a/bun.lock
+++ b/bun.lock
@@ -5,6 +5,7 @@
     "": {
       "name": "fullstack-starter",
       "dependencies": {
+        "@t3-oss/env-core": "^0.13.10",
         "@tanstack/react-query": "^5.90.18",
         "@tanstack/react-query-devtools": "^5.91.2",
         "@tanstack/react-router": "^1.150.0",
@@ -388,6 +389,8 @@
 
     "@solid-primitives/utils": ["@solid-primitives/utils@6.3.2", "", { "peerDependencies": { "solid-js": "^1.6.12" } }, "sha512-hZ/M/qr25QOCcwDPOHtGjxTD8w2mNyVAYvcfgwzBHq2RwNqHNdDNsMZYap20+ruRwW4A3Cdkczyoz0TSxLCAPQ=="],
 
+    "@t3-oss/env-core": ["@t3-oss/env-core@0.13.10", "", { "peerDependencies": { "arktype": "^2.1.0", "typescript": ">=5.0.0", "valibot": "^1.0.0-beta.7 || ^1.0.0", "zod": "^3.24.0 || ^4.0.0" }, "optionalPeers": ["arktype", "typescript", "valibot", "zod"] }, "sha512-NNFfdlJ+HmPHkLi2HKy7nwuat9SIYOxei9K10lO2YlcSObDILY7mHZNSHsieIM3A0/5OOzw/P/b+yLvPdaG52g=="],
+
     "@tailwindcss/node": ["@tailwindcss/node@4.1.18", "", { "dependencies": { "@jridgewell/remapping": "^2.3.4", "enhanced-resolve": "^5.18.3", "jiti": "^2.6.1", "lightningcss": "1.30.2", "magic-string": "^0.30.21", "source-map-js": "^1.2.1", "tailwindcss": "4.1.18" } }, "sha512-DoR7U1P7iYhw16qJ49fgXUlry1t4CpXeErJHnQ44JgTSKMaZUdf17cfn5mHchfJ4KRBZRFA/Coo+MUF5+gOaCQ=="],
 
     "@tailwindcss/oxide": ["@tailwindcss/oxide@4.1.18", "", { "optionalDependencies": { "@tailwindcss/oxide-android-arm64": "4.1.18", "@tailwindcss/oxide-darwin-arm64": "4.1.18", "@tailwindcss/oxide-darwin-x64": "4.1.18", "@tailwindcss/oxide-freebsd-x64": "4.1.18", "@tailwindcss/oxide-linux-arm-gnueabihf": "4.1.18", "@tailwindcss/oxide-linux-arm64-gnu": "4.1.18", "@tailwindcss/oxide-linux-arm64-musl": "4.1.18", "@tailwindcss/oxide-linux-x64-gnu": "4.1.18", "@tailwindcss/oxide-linux-x64-musl": "4.1.18", "@tailwindcss/oxide-wasm32-wasi": "4.1.18", "@tailwindcss/oxide-win32-arm64-msvc": "4.1.18", "@tailwindcss/oxide-win32-x64-msvc": "4.1.18" } }, "sha512-EgCR5tTS5bUSKQgzeMClT6iCY3ToqE1y+ZB0AKldj809QXk1Y+3jB0upOYZrn9aGIzPtUsP7sX4QQ4XtjBB95A=="],
diff --git a/opencode.jsonc b/opencode.jsonc
new file mode 100644
index 0000000..3724905
--- /dev/null
+++ b/opencode.jsonc
@@ -0,0 +1,13 @@
+{
+  "$schema": "https://opencode.ai/config.json",
+  "mcp": {
+    "shadcn": {
+      "type": "local",
+      "command": ["bunx", "--bun", "shadcn", "mcp"]
+    },
+    "tanstack": {
+      "type": "remote",
+      "url": "https://tanstack.com/api/mcp"
+    }
+  }
+}
diff --git a/package.json b/package.json
index 85dfb9e..30b31e6 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,7 @@
     "typecheck": "tsc -b"
   },
   "dependencies": {
+    "@t3-oss/env-core": "^0.13.10",
     "@tanstack/react-query": "^5.90.18",
     "@tanstack/react-query-devtools": "^5.91.2",
     "@tanstack/react-router": "^1.150.0",
diff --git a/src/env.ts b/src/env.ts
index 5354b99..2465614 100644
--- a/src/env.ts
+++ b/src/env.ts
@@ -1,7 +1,14 @@
+import { createEnv } from '@t3-oss/env-core'
 import { z } from 'zod'
 
-const envSchema = z.object({
-  DATABASE_URL: z.url(),
+export const env = createEnv({
+  server: {
+    DATABASE_URL: z.url(),
+  },
+  clientPrefix: 'VITE_',
+  client: {
+    VITE_APP_TITLE: z.string().min(1).optional(),
+  },
+  runtimeEnv: import.meta.env,
+  emptyStringAsUndefined: true,
 })
-
-export const env = envSchema.parse(process.env)
diff --git a/src/lib/utils.ts b/src/lib/utils.ts
new file mode 100644
index 0000000..e69de29