diff --git a/src/filesystem/index.ts b/src/filesystem/index.ts
index 7b67e63e58..63a00b71c5 100644
--- a/src/filesystem/index.ts
+++ b/src/filesystem/index.ts
@@ -628,7 +628,8 @@ server.registerTool(
   {
     title: "Search Files",
     description:
-      "Recursively search for files and directories matching a pattern. " +
+      "Recursively search for files and directories whose names match a glob pattern. " +
+      "This searches by file/directory name only — it does not search file contents. " +
       "The patterns should be glob-style patterns that match paths relative to the working directory. " +
       "Use pattern like '*.ext' to match files in current directory, and '**/*.ext' to match files in all subdirectories. " +
       "Returns full paths to all matching items. Great for finding files when you don't know their exact location. " +