diff --git a/src/agent/mod.rs b/src/agent/mod.rs
index 349fe91..d10683b 100644
--- a/src/agent/mod.rs
+++ b/src/agent/mod.rs
@@ -198,8 +198,7 @@ impl Agent {
         context.conversation_log = conversation_log;
         context.push_no_log(Section::System, AstNode::system_msg(&system_prompt));
 
-        let mut tool_defs: Vec<String> = agent_tools.iter().map(|t| t.to_json()).collect();
-        tool_defs.extend(tools::all_mcp_tool_definitions().await);
+        let tool_defs: Vec<String> = agent_tools.iter().map(|t| t.to_json()).collect();
 
         if !tool_defs.is_empty() {
             let tools_text = format!(