diff --git a/README.md b/README.md
index e4d5f70..dcea096 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@ This repository holds the CLI functionality for [PHP.Gt/WebEngine](https://www.p
 
 The following commands are exposed:
 
++ `gt add` - add a page, API endpoint or cron script from a template
 + `gt create` - create a new WebEngine application
 + `gt serve` - run the inbuilt development server
 + `gt build` - compile client-side assets
@@ -12,6 +13,54 @@ The following commands are exposed:
 + `gt run` - run all background scripts at once - a combination of `serve`, `build --watch` and `cron --watch --now`
 + `gt deploy` - instantly deploy your application to the internet
 
+## `gt add`
+
+Use `gt add type name [template]` to create new files in the current project.
+
+Supported types:
+
++ `page`
++ `api`
++ `cron`
+
+Examples:
+
++ `gt add page about`
++ `gt add api users`
++ `gt add cron cleanup`
++ `gt add page about multi-column`
+
+`type` and `name` are required. `template` is optional.
+
+### Built-in templates
+
+If no template name is provided, `gt add` copies the built-in templates from this package:
+
++ `src/Template/page/template.html` -> `page/<name>.html`
++ `src/Template/page/template.php` -> `page/<name>.php`
++ `src/Template/api/template.php` -> `api/<name>.php`
++ `src/Template/api/template.json` -> `api/<name>.json`
++ `src/Template/cron/template.php` -> `cron/<name>.php`
+
+If a template file contains `{{name}}`, it is replaced with the provided `name`.
+
+### Project templates
+
+If a template name is provided, files are loaded from the current working directory instead:
+
++ `<type>/_template/<template>.*`
+
+For example:
+
++ `gt add page about multi-column`
+
+This will copy:
+
++ `page/_template/multi-column.html` -> `page/about.html`
++ `page/_template/multi-column.php` -> `page/about.php`
+
+The same lookup rule applies for `api`, `cron`, and future types that may be added later.
+
 # Proudly sponsored by
 
 [JetBrains Open Source sponsorship program](https://www.jetbrains.com/community/opensource/)
diff --git a/bin/gt b/bin/gt
index f0758f8..f494c9b 100755
--- a/bin/gt
+++ b/bin/gt
@@ -2,6 +2,7 @@
 <?php
 use Gt\Cli\Application;
 use Gt\Cli\Argument\ArgumentList;
+use Gt\GtCommand\Command\AddCommand;
 use Gt\GtCommand\Command\BuildCommand;
 use Gt\GtCommand\Command\CreateCommand;
 use Gt\GtCommand\Command\MigrateCommand;
@@ -21,6 +22,7 @@ foreach([ __DIR__ . "/../../..", __DIR__ . "/../vendor" ] as $vendor) {
 $app = new Application(
 	"PHP.GT Command Line Interface",
 	new ArgumentList(...$argv),
+	new AddCommand(),
 	new CreateCommand(),
 	new RunCommand(),
 	new DeployCommand(),
diff --git a/phpmd.xml b/phpmd.xml
index 8c0e715..224fc7a 100644
--- a/phpmd.xml
+++ b/phpmd.xml
@@ -37,9 +37,10 @@
 			<property name="exceptions" value="a,b,i" />
 		</properties>
 	</rule>
+
 	<rule ref="rulesets/naming.xml/ShortMethodName">
 		<properties>
-			<property name="exceptions" value="or,do" />
+			<property name="exceptions" value="go,do" />
 		</properties>
 	</rule>
 </ruleset>
diff --git a/src/Command/AddCommand.php b/src/Command/AddCommand.php
new file mode 100644
index 0000000..2340cd8
--- /dev/null
+++ b/src/Command/AddCommand.php
@@ -0,0 +1,195 @@
+<?php
+namespace Gt\GtCommand\Command;
+
+use Gt\Cli\Argument\ArgumentValueList;
+use Gt\Cli\Command\Command;
+use Gt\Cli\Parameter\NamedParameter;
+use Gt\Cli\Stream;
+use RuntimeException;
+
+class AddCommand extends Command {
+	private const SUPPORTED_TYPES = [
+		"page",
+		"api",
+		"cron",
+	];
+
+	public function run(?ArgumentValueList $arguments = null):void {
+		$type = (string)$arguments?->get("type", "");
+		$name = (string)$arguments?->get("name", "");
+		$template = (string)$arguments?->get("template", "");
+
+		$this->assertValidType($type);
+		$this->assertValidName($name);
+
+		$templateFileMap = $this->getTemplateFileMap($type, $template);
+		$destinationFileMap = $this->getDestinationFileMap($type, $name, $templateFileMap);
+
+		$this->assertDestinationFilesDoNotExist($destinationFileMap);
+		$this->ensureDestinationDirectoryExists($type);
+		foreach($destinationFileMap as $sourcePath => $destinationPath) {
+			$this->copyTemplateFile($sourcePath, $destinationPath, $name);
+		}
+	}
+
+	public function getName():string {
+		return "add";
+	}
+
+	public function getDescription():string {
+		return "Add a page, API endpoint or cron script from a template";
+	}
+
+	public function getRequiredNamedParameterList():array {
+		return [
+			new NamedParameter("type"),
+			new NamedParameter("name"),
+		];
+	}
+
+	public function getOptionalNamedParameterList():array {
+		return [
+			new NamedParameter("template"),
+		];
+	}
+
+	public function getRequiredParameterList():array {
+		return [];
+	}
+
+	public function getOptionalParameterList():array {
+		return [];
+	}
+
+	private function assertValidType(string $type):void {
+		if(in_array($type, self::SUPPORTED_TYPES)) {
+			return;
+		}
+
+		$supportedTypes = implode(", ", self::SUPPORTED_TYPES);
+		$this->writeLine("Unknown add type '$type'. Supported types: $supportedTypes", Stream::ERROR);
+		exit(1); // phpcs:ignore
+	}
+
+	private function assertValidName(string $name):void {
+		if($name && !preg_match("/[^a-z0-9_-]/i", $name)) {
+			return;
+		}
+
+		$this->writeLine(
+			"Invalid name '$name'. Use only letters, numbers, hyphens and underscores.",
+			Stream::ERROR
+		);
+		exit(1); // phpcs:ignore
+	}
+
+	/** @return array<string, string> */
+	private function getTemplateFileMap(string $type, string $template):array {
+		if($template) {
+			return $this->getProjectTemplateFileMap($type, $template);
+		}
+
+		return $this->getBuiltInTemplateFileMap($type);
+	}
+
+	/** @return array<string, string> */
+	private function getBuiltInTemplateFileMap(string $type):array {
+		$templateDirectory = dirname(__DIR__) . "/Template/$type";
+		$templateFiles = glob($templateDirectory . "/template.*");
+
+		if(!$templateFiles) {
+			$this->writeLine("No built-in templates found for type '$type'.", Stream::ERROR);
+			exit(1); // phpcs:ignore
+		}
+
+		$fileMap = [];
+		foreach($templateFiles as $templateFile) {
+			$fileMap[$templateFile] = basename($templateFile);
+		}
+
+		return $fileMap;
+	}
+
+	/** @return array<string, string> */
+	private function getProjectTemplateFileMap(string $type, string $template):array {
+		$templateDirectory = getcwd() . "/$type/_template";
+		$templateFiles = glob($templateDirectory . "/" . $template . ".*");
+
+		if(!$templateFiles) {
+			$this->writeLine(
+				"Template '$template' was not found in $templateDirectory",
+				Stream::ERROR
+			);
+			exit(1); // phpcs:ignore
+		}
+
+		$fileMap = [];
+		foreach($templateFiles as $templateFile) {
+			$fileMap[$templateFile] = basename($templateFile);
+		}
+
+		return $fileMap;
+	}
+
+	/** @param array<string, string> $destinationFileMap */
+	private function assertDestinationFilesDoNotExist(array $destinationFileMap):void {
+		foreach($destinationFileMap as $destinationPath) {
+			if(file_exists($destinationPath)) {
+				$this->writeLine("Destination already exists: $destinationPath", Stream::ERROR);
+				exit(1); // phpcs:ignore
+			}
+		}
+	}
+
+	private function ensureDestinationDirectoryExists(string $type):void {
+		$destinationDirectory = getcwd() . DIRECTORY_SEPARATOR . $type;
+		if(!is_dir($destinationDirectory) && !mkdir($destinationDirectory, 0777, true)) {
+			$this->writeLine("Unable to create directory: $destinationDirectory", Stream::ERROR);
+			// TODO: Replace with proper exit code when upgrade to phpgt/cli v1.3.5
+			exit(1); // phpcs:ignore
+		}
+	}
+
+	private function copyTemplateFile(
+		string $sourcePath,
+		string $destinationPath,
+		string $name,
+	):void {
+		$contents = file_get_contents($sourcePath);
+		if($contents === false) {
+			throw new RuntimeException("Unable to read template file: $sourcePath");
+		}
+
+		$contents = str_replace("{{name}}", $name, $contents);
+		if(file_put_contents($destinationPath, $contents) === false) {
+			throw new RuntimeException("Unable to write file: $destinationPath");
+		}
+
+		$this->writeLine("Created $destinationPath");
+	}
+
+	/**
+	 * @param array<string, string> $templateFileMap
+	 * @return array<string, string>
+	 */
+	private function getDestinationFileMap(
+		string $type,
+		string $name,
+		array $templateFileMap
+	):array {
+		$destinationFileMap = [];
+
+		foreach($templateFileMap as $sourcePath => $sourceFileName) {
+			$extension = pathinfo($sourceFileName, PATHINFO_EXTENSION);
+			$destinationFileMap[$sourcePath] = getcwd()
+				. DIRECTORY_SEPARATOR
+				. $type
+				. DIRECTORY_SEPARATOR
+				. $name
+				. "."
+				. $extension;
+		}
+
+		return $destinationFileMap;
+	}
+}
diff --git a/src/Template/api/template.json b/src/Template/api/template.json
new file mode 100644
index 0000000..bcb1f35
--- /dev/null
+++ b/src/Template/api/template.json
@@ -0,0 +1,29 @@
+{
+	"$schema": "https://json-schema.org/draft/2020-12/schema",
+	"type": "object",
+	"oneOf": [
+		{ "$ref":  "#/$defs/request" },
+		{ "$ref":  "#/$defs/response" }
+	],
+	"$defs": {
+		"request": {
+			"type": "object",
+
+			"properties": {
+			},
+
+			"required": [
+			]
+		},
+
+		"response": {
+			"type": "object",
+
+			"required": [
+			],
+
+			"properties": {
+			}
+		}
+	}
+}
diff --git a/src/Template/api/template.php b/src/Template/api/template.php
new file mode 100644
index 0000000..240857e
--- /dev/null
+++ b/src/Template/api/template.php
@@ -0,0 +1,3 @@
+<?php
+function go():void {
+}
diff --git a/src/Template/cron/template.php b/src/Template/cron/template.php
new file mode 100644
index 0000000..240857e
--- /dev/null
+++ b/src/Template/cron/template.php
@@ -0,0 +1,3 @@
+<?php
+function go():void {
+}
diff --git a/src/Template/page/template.html b/src/Template/page/template.html
new file mode 100644
index 0000000..4b9d692
--- /dev/null
+++ b/src/Template/page/template.html
@@ -0,0 +1,2 @@
+<h1>{{name}}</h1>
+<p>This is the {{name}} page.</p>
diff --git a/src/Template/page/template.php b/src/Template/page/template.php
new file mode 100644
index 0000000..240857e
--- /dev/null
+++ b/src/Template/page/template.php
@@ -0,0 +1,3 @@
+<?php
+function go():void {
+}