diff --git a/llama_stack/apis/tools/tools.py b/llama_stack/apis/tools/tools.py
index de4d82646..c6b59e948 100644
--- a/llama_stack/apis/tools/tools.py
+++ b/llama_stack/apis/tools/tools.py
@@ -11,8 +11,7 @@ from llama_models.schema_utils import json_schema_type, register_schema, webmeth
 from pydantic import BaseModel, Field
 from typing_extensions import Protocol, runtime_checkable
 
-from llama_stack.apis.inference import InterleavedContent
-
+from llama_stack.apis.common.content_types import InterleavedContent, URL
 from llama_stack.apis.resource import Resource, ResourceType
 from llama_stack.providers.utils.telemetry.trace_protocol import trace_protocol
 
@@ -50,8 +49,13 @@ class ToolDef(BaseModel):
 
 @json_schema_type
 class MCPToolGroup(BaseModel):
-    type: Literal["mcp"] = "mcp"
-    endpoint: str
+    """
+    A tool group that is defined by in a model context protocol server.
+    Refer to https://modelcontextprotocol.io/docs/concepts/tools for more information.
+    """
+
+    type: Literal["model_context_protocol"] = "model_context_protocol"
+    endpoint: URL
 
 
 @json_schema_type
@@ -67,7 +71,7 @@ ToolGroup = register_schema(
 
 
 @json_schema_type
-class InvokeToolResult(BaseModel):
+class ToolInvocationResult(BaseModel):
     content: InterleavedContent
     error_message: Optional[str] = None
     error_code: Optional[int] = None
@@ -80,7 +84,7 @@ class ToolStore(Protocol):
 @runtime_checkable
 @trace_protocol
 class Tools(Protocol):
-    @webmethod(route="/tool-groups/register", method="POST")
+    @webmethod(route="/toolgroups/register", method="POST")
     async def register_tool_group(
         self,
         name: str,
@@ -112,6 +116,8 @@ class ToolRuntime(Protocol):
     tool_store: ToolStore
 
     @webmethod(route="/tool-runtime/invoke", method="POST")
-    async def invoke_tool(self, tool_id: str, args: Dict[str, Any]) -> InvokeToolResult:
+    async def invoke_tool(
+        self, tool_id: str, args: Dict[str, Any]
+    ) -> ToolInvocationResult:
         """Run a tool with the given arguments"""
         ...
diff --git a/llama_stack/providers/inline/tool_runtime/meta_reference/meta_reference.py b/llama_stack/providers/inline/tool_runtime/meta_reference/meta_reference.py
index df5352221..087fd918d 100644
--- a/llama_stack/providers/inline/tool_runtime/meta_reference/meta_reference.py
+++ b/llama_stack/providers/inline/tool_runtime/meta_reference/meta_reference.py
@@ -6,7 +6,7 @@
 
 from typing import Any, Dict
 
-from llama_stack.apis.tools import InvokeToolResult, Tool, ToolRuntime
+from llama_stack.apis.tools import Tool, ToolInvocationResult, ToolRuntime
 from llama_stack.providers.datatypes import ToolsProtocolPrivate
 
 from .config import MetaReferenceToolRuntimeConfig
@@ -26,5 +26,7 @@ class MetaReferenceToolRuntimeImpl(ToolsProtocolPrivate, ToolRuntime):
     async def unregister_tool(self, tool_id: str) -> None:
         pass
 
-    async def invoke_tool(self, tool_id: str, args: Dict[str, Any]) -> InvokeToolResult:
+    async def invoke_tool(
+        self, tool_id: str, args: Dict[str, Any]
+    ) -> ToolInvocationResult:
         pass