diff --git a/codex-rs/app-server/src/codex_message_processor.rs b/codex-rs/app-server/src/codex_message_processor.rs
index 67a0a71f6..fb3abbf93 100644
--- a/codex-rs/app-server/src/codex_message_processor.rs
+++ b/codex-rs/app-server/src/codex_message_processor.rs
@@ -1910,9 +1910,7 @@ impl CodexMessageProcessor {
         let core_dynamic_tools = if dynamic_tools.is_empty() {
             Vec::new()
         } else {
-            let snapshot = collect_mcp_snapshot(&config).await;
-            let mcp_tool_names = snapshot.tools.keys().cloned().collect::<HashSet<_>>();
-            if let Err(message) = validate_dynamic_tools(&dynamic_tools, &mcp_tool_names) {
+            if let Err(message) = validate_dynamic_tools(&dynamic_tools) {
                 let error = JSONRPCErrorError {
                     code: INVALID_REQUEST_ERROR_CODE,
                     message,
@@ -5712,10 +5710,7 @@ fn errors_to_info(
         .collect()
 }
 
-fn validate_dynamic_tools(
-    tools: &[ApiDynamicToolSpec],
-    mcp_tool_names: &HashSet<String>,
-) -> Result<(), String> {
+fn validate_dynamic_tools(tools: &[ApiDynamicToolSpec]) -> Result<(), String> {
     let mut seen = HashSet::new();
     for tool in tools {
         let name = tool.name.trim();
@@ -5731,9 +5726,6 @@ fn validate_dynamic_tools(
         if name == "mcp" || name.starts_with("mcp__") {
             return Err(format!("dynamic tool name is reserved: {name}"));
         }
-        if mcp_tool_names.contains(name) {
-            return Err(format!("dynamic tool name conflicts with MCP tool: {name}"));
-        }
         if !seen.insert(name.to_string()) {
             return Err(format!("duplicate dynamic tool name: {name}"));
         }
@@ -6236,7 +6228,7 @@ mod tests {
             description: "test".to_string(),
             input_schema: json!({"type": "null"}),
         }];
-        let err = validate_dynamic_tools(&tools, &HashSet::new()).expect_err("invalid schema");
+        let err = validate_dynamic_tools(&tools).expect_err("invalid schema");
         assert!(err.contains("my_tool"), "unexpected error: {err}");
     }
 
@@ -6248,7 +6240,7 @@ mod tests {
             // Missing `type` is common; core sanitizes these to a supported schema.
             input_schema: json!({"properties": {}}),
         }];
-        validate_dynamic_tools(&tools, &HashSet::new()).expect("valid schema");
+        validate_dynamic_tools(&tools).expect("valid schema");
     }
 
     #[test]