> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify.com/killlowkey/claude-code/llms.txt
> Use this file to discover all available pages before exploring further.

# Search Tools

> Tools for searching files and content across your codebase.

Search tools let Claude navigate large codebases efficiently using pattern matching and content search.

## GlobTool

Finds files matching a glob pattern. Returns paths sorted by modification time — most recently modified first.

**Usage pattern:**

```
> Find all React component files
> List every test file in the project
> Show me all configuration files
```

**Common patterns:**

| Pattern                | Matches               |
| ---------------------- | --------------------- |
| `**/*.ts`              | All TypeScript files  |
| `src/**/*.test.ts`     | Test files under src/ |
| `**/*.{json,yaml,yml}` | JSON and YAML files   |
| `**/index.{ts,tsx,js}` | Index files           |
| `**/.env*`             | Environment files     |

## GrepTool

Searches file contents using regular expressions, powered by ripgrep. Returns file paths and line numbers for all matches, sorted by modification time.

**Usage pattern:**

```
> Find all places where we call the auth API
> Search for TODO comments in the codebase
> Where is the `parseToken` function defined?
> Find all usages of the deprecated `fetch` wrapper
```

**Real-world examples:**

```
> Find all console.log statements in src/
> Where is DATABASE_URL used?
> Search for any hardcoded API keys
```

**Regex support:**

GrepTool supports full regex syntax:

```
log.*Error          # Lines containing "log" followed by "Error"
function\s+\w+      # Function declarations
import.*from\s+'@   # Imports from scoped packages
```

<Tip>
  GrepTool searches file contents. Use GlobTool to find files by name pattern, and GrepTool to find files by content.
</Tip>

## ToolSearchTool

Deferred tool discovery — searches for available tools (including MCP tools) that match a description. Used internally when Claude needs a capability it doesn't have loaded yet.

This tool runs automatically in the background; you don't invoke it directly.

<Note>
  For large codebases, Claude often combines GlobTool (to find relevant files) and GrepTool (to find specific patterns within them) in sequence to efficiently locate code without reading every file.
</Note>