diff --git a/rivetkit-typescript/packages/traces/package.json b/rivetkit-typescript/packages/traces/package.json
index 08eab034e0..fad61b8581 100644
--- a/rivetkit-typescript/packages/traces/package.json
+++ b/rivetkit-typescript/packages/traces/package.json
@@ -12,6 +12,11 @@
 	],
 	"exports": {
 		".": {
+			"browser": {
+				"types": "./dist/tsup/index.browser.d.ts",
+				"import": "./dist/tsup/index.browser.js",
+				"require": "./dist/tsup/index.browser.cjs"
+			},
 			"import": {
 				"types": "./dist/tsup/index.d.ts",
 				"default": "./dist/tsup/index.js"
@@ -43,8 +48,8 @@
 	},
 	"dependencies": {
 		"@rivetkit/bare-ts": "^0.6.2",
-		"cbor-x": "^1.6.0",
 		"fdb-tuple": "^1.0.0",
+		"cbor-x": "^1.6.0",
 		"vbare": "^0.0.4"
 	},
 	"devDependencies": {
diff --git a/rivetkit-typescript/packages/traces/src/index.browser.ts b/rivetkit-typescript/packages/traces/src/index.browser.ts
new file mode 100644
index 0000000000..f93430a885
--- /dev/null
+++ b/rivetkit-typescript/packages/traces/src/index.browser.ts
@@ -0,0 +1,11 @@
+// Browser stub: createTraces is server-only (uses node:async_hooks, node:crypto,
+// fdb-tuple). This module is selected via the "browser" export condition so that
+// bundlers like Vite never pull in the real implementation when resolving
+// @rivetkit/traces in a browser context.  The function is never actually called
+// in the browser; it only exists because tsup chunk-splitting may place the
+// import in a shared chunk also reached by client code.
+export function createTraces(): never {
+	throw new Error(
+		"createTraces is not available in the browser. This is a server-only API.",
+	);
+}
diff --git a/rivetkit-typescript/packages/traces/src/traces.ts b/rivetkit-typescript/packages/traces/src/traces.ts
index 36c4e80c30..370deecb64 100644
--- a/rivetkit-typescript/packages/traces/src/traces.ts
+++ b/rivetkit-typescript/packages/traces/src/traces.ts
@@ -1058,10 +1058,7 @@ export function createTraces(
 		chunkId: number;
 	} {
 		const tuple = unpack(Buffer.from(key)) as [number, number, number];
-		return {
-			bucketStartSec: tuple[1],
-			chunkId: tuple[2],
-		};
+		return { bucketStartSec: tuple[1], chunkId: tuple[2] };
 	}
 
 	function buildChunkKey(bucketStartSec: number, chunkId: number): Uint8Array {