diff --git a/autogpt_platform/backend/backend/api/features/chat/config.py b/autogpt_platform/backend/backend/api/features/chat/config.py
index 82b50e4166..9a5a3a7cda 100644
--- a/autogpt_platform/backend/backend/api/features/chat/config.py
+++ b/autogpt_platform/backend/backend/api/features/chat/config.py
@@ -97,18 +97,19 @@ class ChatConfig(BaseSettings):
         default=True,
         description="Use Claude Agent SDK for chat completions",
     )
-    sdk_model: str | None = Field(
+    claude_agent_model: str | None = Field(
         default=None,
-        description="Model for SDK path. If None, derives from the `model` field "
-        "by stripping the OpenRouter provider prefix.",
+        description="Model for the Claude Agent SDK path. If None, derives from "
+        "the `model` field by stripping the OpenRouter provider prefix.",
     )
-    sdk_max_budget_usd: float | None = Field(
+    claude_agent_max_budget_usd: float | None = Field(
         default=None,
-        description="Max budget in USD per SDK session (None = unlimited)",
+        gt=0,
+        description="Max budget in USD per Claude Agent SDK session (None = unlimited)",
     )
-    sdk_max_buffer_size: int = Field(
+    claude_agent_max_buffer_size: int = Field(
         default=10 * 1024 * 1024,  # 10MB (default SDK is 1MB)
-        description="Max buffer size in bytes for SDK JSON message parsing. "
+        description="Max buffer size in bytes for Claude Agent SDK JSON message parsing. "
         "Increase if tool outputs exceed the limit.",
     )
 
diff --git a/autogpt_platform/backend/backend/api/features/chat/sdk/service.py b/autogpt_platform/backend/backend/api/features/chat/sdk/service.py
index f65239ab47..5a115d7ca7 100644
--- a/autogpt_platform/backend/backend/api/features/chat/sdk/service.py
+++ b/autogpt_platform/backend/backend/api/features/chat/sdk/service.py
@@ -67,14 +67,14 @@ interpreters (python, node) are NOT available.
 
 
 def _resolve_sdk_model() -> str | None:
-    """Resolve the model name for the SDK CLI.
+    """Resolve the model name for the Claude Agent SDK CLI.
 
-    Uses ``config.sdk_model`` if set, otherwise derives from ``config.model``
-    by stripping the OpenRouter provider prefix (e.g.,
+    Uses ``config.claude_agent_model`` if set, otherwise derives from
+    ``config.model`` by stripping the OpenRouter provider prefix (e.g.,
     ``"anthropic/claude-opus-4.6"`` → ``"claude-opus-4.6"``).
     """
-    if config.sdk_model:
-        return config.sdk_model
+    if config.claude_agent_model:
+        return config.claude_agent_model
     model = config.model
     if "/" in model:
         return model.split("/", 1)[1]
@@ -370,11 +370,11 @@ async def stream_chat_completion_sdk(
                 allowed_tools=COPILOT_TOOL_NAMES,
                 hooks=combined_hooks,  # type: ignore[arg-type]
                 cwd=sdk_cwd,
-                max_buffer_size=config.sdk_max_buffer_size,
+                max_buffer_size=config.claude_agent_max_buffer_size,
                 model=sdk_model,
                 env=_build_sdk_env(),
                 user=user_id or None,
-                max_budget_usd=config.sdk_max_budget_usd,
+                max_budget_usd=config.claude_agent_max_budget_usd,
             )
 
             adapter = SDKResponseAdapter(message_id=message_id)