From 02552b05af95f6f3d2f87e3504918ad85f0bb32c Mon Sep 17 00:00:00 2001
From: Juxsta <ericjrreyes2@gmail.com>
Date: Sat, 7 Feb 2026 23:06:13 -0800
Subject: [PATCH] Fix: wrap string system prompts as text block objects

The Anthropic API expects system array items to be objects with type and text fields, not raw strings. When receiving a string system prompt, now properly wraps it as {type:"text", text:...}

This fixes errors when clients send the system prompt as a plain string rather than an array of content blocks.
---
 server/ClaudeRequest.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/server/ClaudeRequest.js b/server/ClaudeRequest.js
index 4a468d8..bccd229 100644
--- a/server/ClaudeRequest.js
+++ b/server/ClaudeRequest.js
@@ -342,7 +342,7 @@ class ClaudeRequest {
       if (Array.isArray(body.system)) {
         body.system.unshift(systemPrompt);
       } else {
-        body.system = [systemPrompt, body.system];
+        body.system = typeof body.system === 'string' ? [systemPrompt, { type: 'text', text: body.system }] : [systemPrompt, body.system];
       }
     } else {
       body.system = [systemPrompt];