diff --git a/litellm/proxy/_experimental/mcp_server/mcp_server_manager.py b/litellm/proxy/_experimental/mcp_server/mcp_server_manager.py
index 0f92485f0b0..53905c7b7a7 100644
--- a/litellm/proxy/_experimental/mcp_server/mcp_server_manager.py
+++ b/litellm/proxy/_experimental/mcp_server/mcp_server_manager.py
@@ -3198,12 +3198,17 @@ class MCPServerManager:
         kept, dropped = split_tools_by_name_length(tools, MCP_MAX_TOOL_NAME_LENGTH)
         if dropped:
             dropped_names = ", ".join(f"{tool.name} ({len(tool.name)} chars)" for tool in dropped)
+            server_label = (
+                server.name
+                if not server.alias or server.alias == server.name
+                else f"{server.name} (alias {server.alias})"
+            )
             verbose_logger.warning(
                 "MCP server %s has %d tool(s) whose name exceeds %d characters, which providers such as "
                 "AWS Bedrock, OpenAI, and Gemini reject. Excluding them from tool listings: %s. "
                 "Use a shorter server alias, rename the tools on the MCP server, or set "
                 "LITELLM_MCP_MAX_TOOL_NAME_LENGTH to change the limit.",
-                server.name,
+                server_label,
                 len(dropped),
                 MCP_MAX_TOOL_NAME_LENGTH,
                 dropped_names,
diff --git a/litellm/proxy/_experimental/mcp_server/rest_endpoints.py b/litellm/proxy/_experimental/mcp_server/rest_endpoints.py
index 581a2f5dc72..955a418c208 100644
--- a/litellm/proxy/_experimental/mcp_server/rest_endpoints.py
+++ b/litellm/proxy/_experimental/mcp_server/rest_endpoints.py
@@ -26,6 +26,7 @@ from litellm.constants import MCP_MAX_TOOL_NAME_LENGTH
 from litellm.proxy._experimental.mcp_server.utils import (
     MCPMissingUserEnvVarsError,
     get_server_prefix,
+    is_short_mcp_tool_prefix_enabled,
     merge_mcp_headers,
     tool_name_length_warnings,
 )
@@ -1311,10 +1312,17 @@ if MCP_AVAILABLE:
             list_tools_response = await client.run_with_session(_list_tools_session_operation)
             list_tools_result: List[MCPTool] = list_tools_response.tools
             model_dumped_tools: List[dict] = [tool.model_dump() for tool in list_tools_result]
-            warnings = tool_name_length_warnings(
-                [tool.name for tool in list_tools_result],
-                get_server_prefix(new_mcp_server_request),
-                MCP_MAX_TOOL_NAME_LENGTH,
+            # In short-prefix mode the 3-char prefix derives from the server_id
+            # assigned at create time, so without one the final length is
+            # unknowable; skip speculative warnings (runtime exclusion still warns).
+            warnings = (
+                []
+                if is_short_mcp_tool_prefix_enabled() and not new_mcp_server_request.server_id
+                else tool_name_length_warnings(
+                    [tool.name for tool in list_tools_result],
+                    get_server_prefix(new_mcp_server_request),
+                    MCP_MAX_TOOL_NAME_LENGTH,
+                )
             )
             return {
                 "tools": model_dumped_tools,
diff --git a/tests/test_litellm/proxy/_experimental/mcp_server/test_rest_endpoints.py b/tests/test_litellm/proxy/_experimental/mcp_server/test_rest_endpoints.py
index 1e609dbc882..a9cddc676a1 100644
--- a/tests/test_litellm/proxy/_experimental/mcp_server/test_rest_endpoints.py
+++ b/tests/test_litellm/proxy/_experimental/mcp_server/test_rest_endpoints.py
@@ -644,6 +644,50 @@ class TestTestToolsList:
         assert len(result["warnings"]) == 1
         assert f"{alias}-{too_long}" in result["warnings"][0]
 
+    async def test_no_speculative_warnings_in_short_prefix_mode(self, monkeypatch):
+        """In short-prefix mode without a server_id the 3-char runtime prefix is not
+        knowable yet, so the preview must not warn based on the full alias."""
+        from types import SimpleNamespace
+
+        from mcp.types import Tool as MCPTool
+
+        from litellm.constants import MCP_MAX_TOOL_NAME_LENGTH
+        from litellm.proxy._types import LitellmUserRoles
+
+        alias = "network_config_audit"
+        fits_short_prefix_only = "t" * (MCP_MAX_TOOL_NAME_LENGTH - len(alias))
+
+        class FakeClient:
+            async def run_with_session(self, operation):
+                return SimpleNamespace(tools=[MCPTool(name=fits_short_prefix_only, inputSchema={})])
+
+        async def fake_execute(
+            request,
+            operation,
+            mcp_auth_header=None,
+            oauth2_headers=None,
+            raw_headers=None,
+        ):
+            return await operation(FakeClient())
+
+        monkeypatch.setattr(
+            rest_endpoints, "_execute_with_mcp_client", fake_execute, raising=False
+        )
+        monkeypatch.setenv("LITELLM_USE_SHORT_MCP_TOOL_PREFIX", "1")
+
+        result = await rest_endpoints.test_tools_list(
+            _build_request(),
+            NewMCPServerRequest(
+                server_name="example",
+                alias=alias,
+                url="https://example.com",
+                auth_type=MCPAuth.none,
+            ),
+            user_api_key_dict=UserAPIKeyAuth(user_role=LitellmUserRoles.PROXY_ADMIN),
+        )
+
+        assert result["warnings"] == []
+
 
 class TestListToolsRestAPI:
     pytestmark = pytest.mark.asyncio