Fix behaviour of search_files tool

src/filesystem/README.md

@@ -145,12 +145,12 @@ The server's directory access control follows this flow:
   - Fails if destination exists
 
 - **search_files**
-  - Recursively search for files/directories
+  - Recursively search for files/directories that match or do not match patterns
   - Inputs:
     - `path` (string): Starting directory
     - `pattern` (string): Search pattern
-    - `excludePatterns` (string[]): Exclude any patterns. Glob formats are supported.
-  - Case-insensitive matching
+    - `excludePatterns` (string[]): Exclude any patterns.
+  - Glob-style pattern matching
   - Returns full paths to matches
 
 - **directory_tree**

src/filesystem/__tests__/lib.test.ts

@@ -316,7 +316,7 @@ describe('Lib Functions', () => {
 
         const result = await searchFilesWithValidation(
           testDir,
-          'test',
+          '*test*',
           allowedDirs,
           { excludePatterns: ['*.log', 'node_modules'] }
         );
@@ -346,7 +346,7 @@ describe('Lib Functions', () => {
 
         const result = await searchFilesWithValidation(
           testDir,
-          'test',
+          '*test*',
           allowedDirs,
           {}
         );
@@ -370,7 +370,7 @@ describe('Lib Functions', () => {
 
         const result = await searchFilesWithValidation(
           testDir,
-          'test',
+          '*test*',
           allowedDirs,
           { excludePatterns: ['*.backup'] }
         );

src/filesystem/index.ts

@@ -277,9 +277,9 @@ server.setRequestHandler(ListToolsRequestSchema, async () => {
         name: "search_files",
         description:
           "Recursively search for files and directories matching a pattern. " +
-          "Searches through all subdirectories from the starting path. The search " +
-          "is case-insensitive and matches partial names. Returns full paths to all " +
-          "matching items. Great for finding files when you don't know their exact location. " +
+          "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. " +
           "Only searches within allowed directories.",
         inputSchema: zodToJsonSchema(SearchFilesArgsSchema) as ToolInput,
       },

src/filesystem/lib.ts

@@ -367,14 +367,14 @@ export async function searchFilesWithValidation(
         await validatePath(fullPath);
 
         const relativePath = path.relative(rootPath, fullPath);
-        const shouldExclude = excludePatterns.some(excludePattern => {
-          const globPattern = excludePattern.includes('*') ? excludePattern : `**/${excludePattern}/**`;
-          return minimatch(relativePath, globPattern, { dot: true });
-        });
+        const shouldExclude = excludePatterns.some(excludePattern =>
+          minimatch(relativePath, excludePattern, { dot: true })
+        );
 
         if (shouldExclude) continue;
 
-        if (entry.name.toLowerCase().includes(pattern.toLowerCase())) {
+        // Use glob matching for the search pattern
+        if (minimatch(relativePath, pattern, { dot: true })) {
           results.push(fullPath);
         }