diff --git a/eval_protocol/types/remote_rollout_processor.py b/eval_protocol/types/remote_rollout_processor.py
index 89967729..21a821e0 100644
--- a/eval_protocol/types/remote_rollout_processor.py
+++ b/eval_protocol/types/remote_rollout_processor.py
@@ -21,7 +21,7 @@ class InitRequest(BaseModel):
     """Request model for POST /init endpoint."""
 
     model: str
-    messages: List[Message] = Field(min_length=1)
+    messages: Optional[List[Message]] = None
     tools: Optional[List[Dict[str, Any]]] = None
 
     model_base_url: Optional[str] = None
diff --git a/tests/remote_server/remote_server.py b/tests/remote_server/remote_server.py
index ea831f51..ba2df50a 100644
--- a/tests/remote_server/remote_server.py
+++ b/tests/remote_server/remote_server.py
@@ -30,6 +30,9 @@ def _worker():
         try:
             metadata = {"langfuse_tags": create_langfuse_config_tags(req)}
 
+            if not req.messages:
+                raise ValueError("messages is required")
+
             completion_kwargs = {
                 "model": req.model,
                 "messages": req.messages,
diff --git a/typescript/index.ts b/typescript/index.ts
index 59f7a8af..d15fd97c 100644
--- a/typescript/index.ts
+++ b/typescript/index.ts
@@ -41,7 +41,7 @@ const metadataSchema = z
 
 export const initRequestSchema = z.object({
   model: z.string(),
-  messages: z.array(messageSchema).min(1),
+  messages: z.array(messageSchema).optional(),
   tools: z.array(toolSchema).optional().nullable(),
   metadata: metadataSchema,
   model_base_url: z.string().optional().nullable(),
@@ -80,6 +80,10 @@ export function initRequestToCompletionParams(
         },
   }));
 
+  if (!initRequest.messages) {
+    throw new Error("messages is required");
+  }
+
   const completionParams = toolsToOpenAI
     ? {
         model: initRequest.model,
diff --git a/typescript/package.json b/typescript/package.json
index f39bd1ef..8fed21df 100644
--- a/typescript/package.json
+++ b/typescript/package.json
@@ -2,7 +2,7 @@
   "name": "eval-protocol",
   "module": "index.ts",
   "type": "module",
-  "version": "0.1.3",
+  "version": "0.1.4",
   "devDependencies": {
     "@types/bun": "latest",
     "openai": "^5.23.0"
diff --git a/typescript/pnpm-lock.yaml b/typescript/pnpm-lock.yaml
new file mode 100644
index 00000000..fde6dccf
--- /dev/null
+++ b/typescript/pnpm-lock.yaml
@@ -0,0 +1,98 @@
+lockfileVersion: '9.0'
+
+settings:
+  autoInstallPeers: true
+  excludeLinksFromLockfile: false
+
+importers:
+
+  .:
+    dependencies:
+      typescript:
+        specifier: ^5
+        version: 5.9.2
+      zod:
+        specifier: ^4.1.11
+        version: 4.1.11
+    devDependencies:
+      '@types/bun':
+        specifier: latest
+        version: 1.2.22(@types/react@19.1.14)
+      openai:
+        specifier: ^5.23.0
+        version: 5.23.1(zod@4.1.11)
+
+packages:
+
+  '@types/bun@1.2.22':
+    resolution: {integrity: sha512-5A/KrKos2ZcN0c6ljRSOa1fYIyCKhZfIVYeuyb4snnvomnpFqC0tTsEkdqNxbAgExV384OETQ//WAjl3XbYqQA==}
+
+  '@types/node@24.5.2':
+    resolution: {integrity: sha512-FYxk1I7wPv3K2XBaoyH2cTnocQEu8AOZ60hPbsyukMPLv5/5qr7V1i8PLHdl6Zf87I+xZXFvPCXYjiTFq+YSDQ==}
+
+  '@types/react@19.1.14':
+    resolution: {integrity: sha512-ukd93VGzaNPMAUPy0gRDSC57UuQbnH9Kussp7HBjM06YFi9uZTFhOvMSO2OKqXm1rSgzOE+pVx1k1PYHGwlc8Q==}
+
+  bun-types@1.2.22:
+    resolution: {integrity: sha512-hwaAu8tct/Zn6Zft4U9BsZcXkYomzpHJX28ofvx7k0Zz2HNz54n1n+tDgxoWFGB4PcFvJXJQloPhaV2eP3Q6EA==}
+    peerDependencies:
+      '@types/react': ^19
+
+  csstype@3.1.3:
+    resolution: {integrity: sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==}
+
+  openai@5.23.1:
+    resolution: {integrity: sha512-APxMtm5mln4jhKhAr0d5zP9lNsClx4QwJtg8RUvYSSyxYCTHLNJnLEcSHbJ6t0ori8Pbr9HZGfcPJ7LEy73rvQ==}
+    hasBin: true
+    peerDependencies:
+      ws: ^8.18.0
+      zod: ^3.23.8
+    peerDependenciesMeta:
+      ws:
+        optional: true
+      zod:
+        optional: true
+
+  typescript@5.9.2:
+    resolution: {integrity: sha512-CWBzXQrc/qOkhidw1OzBTQuYRbfyxDXJMVJ1XNwUHGROVmuaeiEm3OslpZ1RV96d7SKKjZKrSJu3+t/xlw3R9A==}
+    engines: {node: '>=14.17'}
+    hasBin: true
+
+  undici-types@7.12.0:
+    resolution: {integrity: sha512-goOacqME2GYyOZZfb5Lgtu+1IDmAlAEu5xnD3+xTzS10hT0vzpf0SPjkXwAw9Jm+4n/mQGDP3LO8CPbYROeBfQ==}
+
+  zod@4.1.11:
+    resolution: {integrity: sha512-WPsqwxITS2tzx1bzhIKsEs19ABD5vmCVa4xBo2tq/SrV4RNZtfws1EnCWQXM6yh8bD08a1idvkB5MZSBiZsjwg==}
+
+snapshots:
+
+  '@types/bun@1.2.22(@types/react@19.1.14)':
+    dependencies:
+      bun-types: 1.2.22(@types/react@19.1.14)
+    transitivePeerDependencies:
+      - '@types/react'
+
+  '@types/node@24.5.2':
+    dependencies:
+      undici-types: 7.12.0
+
+  '@types/react@19.1.14':
+    dependencies:
+      csstype: 3.1.3
+
+  bun-types@1.2.22(@types/react@19.1.14):
+    dependencies:
+      '@types/node': 24.5.2
+      '@types/react': 19.1.14
+
+  csstype@3.1.3: {}
+
+  openai@5.23.1(zod@4.1.11):
+    optionalDependencies:
+      zod: 4.1.11
+
+  typescript@5.9.2: {}
+
+  undici-types@7.12.0: {}
+
+  zod@4.1.11: {}