---
title: AI Agent Tools - Zed
description: Built-in tools for Zed's AI agent including file editing, code search, terminal commands, web search, and diagnostics.
---

# Tools

Zed's built-in agent has access to these tools for reading, searching, and editing your codebase. These tools are used in the [Agent Panel](./agent-panel.md) during conversations with AI agents.

You can configure permissions for tool actions, including situations where they are automatically approved, automatically denied, or require your confirmation on a case-by-case basis. See [Tool Permissions](./tool-permissions.md) for the list of permission-gated tools and details.

To add custom tools beyond these built-in ones, see [MCP servers](./mcp.md).

## Read & Search Tools

### `diagnostics`

Gets errors and warnings for either a specific file or the entire project, useful after making edits to determine if further changes are needed.
When a path is provided, shows all diagnostics for that specific file.
When no path is provided, shows a summary of error and warning counts for all files in the project.

**Example:** After editing `src/parser.rs`, call `diagnostics` with that path to check for type errors immediately. After a larger refactor touching many files, call it without a path to see a project-wide count of errors before deciding what to fix next.

### `fetch`

Fetches a URL and returns the content as Markdown. Useful for providing docs as context.

**Example:** Fetching a library's changelog page to check whether a breaking API change was introduced in a recent version before writing integration code.

### `find_path`

Quickly finds files by matching glob patterns (like "\*_/_.js"), returning matching file paths alphabetically.

### `grep`

Searches file contents across the project using regular expressions, preferred for finding symbols in code without knowing exact file paths.

**Example:** To find every call site of a function before renaming it, search for `parse_config\(` — the regex matches the function name followed by an opening parenthesis, filtering out comments or variable names that happen to contain the string.

### `list_directory`

Lists files and directories in a given path, providing an overview of filesystem contents.

### `read_file`

Reads the content of a specified file in the project, allowing access to file contents.

### `search_web`

Searches the web for information, providing results with snippets and links from relevant web pages, useful for accessing real-time information.

**Example:** Looking up whether a known bug in a dependency has been patched in a recent release, or finding the current API signature for a third-party library when the local docs are out of date.

> **Note:** The built-in `search_web` tool is only available to [Zed Pro](https://zed.dev/pricing) subscribers using the Zed provider. If you're on a free plan or using a different provider, you can get equivalent functionality by connecting an MCP server that provides web search capabilities. See [MCP servers](./mcp.md) for details.

## Edit Tools

### `copy_path`

Copies a file or directory recursively in the project, more efficient than manually reading and writing files when duplicating content.

### `create_directory`

Creates a new directory at the specified path within the project, creating all necessary parent directories (similar to `mkdir -p`).

### `delete_path`

Deletes a file or directory (including contents recursively) at the specified path and confirms the deletion.

### `edit_file`

Edits files by replacing specific text with new content.

**Example:** Updating a function signature — the agent identifies the exact lines to replace and provides the updated version, leaving the surrounding code untouched. For widespread renames, it pairs this with `grep` to find every occurrence first.

### `move_path`

Moves or renames a file or directory in the project, performing a rename if only the filename differs.

### `write_file`

Creates a new file or overwrites an existing file with completely new contents.

### `terminal`

Executes shell commands and returns the combined output, creating a new shell process for each invocation.

**Example:** After editing a Rust file, run `cargo test --package my_crate 2>&1 | tail -30` to confirm the changes don't break existing tests. Or run `git diff --stat` to review which files have been modified before wrapping up a task.

## Other Tools

### `spawn_agent`

Spawns a subagent with its own context window to perform a delegated task. Useful for running parallel investigations, completing self-contained tasks, or performing research where only the outcome matters. Each subagent has access to the same tools as the parent agent.

**Example:** While refactoring the authentication module, spawn a subagent to investigate how session tokens are validated elsewhere in the codebase. The parent agent continues its work and reviews the subagent's findings when it completes — keeping both context windows focused on a single task.
