Add --no-interaction flag to prevent Git/SSH prompts in package commands

features/package-install.feature

@@ -1102,3 +1102,33 @@ Feature: Install WP-CLI packages
       Error: ZipArchive failed to unzip 'package-dir/zero.zip': Not a zip archive (19).
       """
     And STDOUT should be empty
+
+  Scenario: Install a package with --no-interaction flag
+    Given an empty directory
+    And a composer.json file:
+      """
+      {
+        "repositories": {
+          "test" : {
+            "type": "path",
+            "url": "./dummy-package/"
+          },
+          "wp-cli": {
+            "type": "composer",
+            "url": "https://wp-cli.org/package-index/"
+          }
+        }
+      }
+      """
+    And a dummy-package/composer.json file:
+      """
+      {
+        "name": "wp-cli/restful",
+        "description": "Test package for no-interaction flag"
+      }
+      """
+    When I run `WP_CLI_PACKAGES_DIR=. wp package install wp-cli/restful --no-interaction`
+    Then STDOUT should contain:
+      """
+      Success: Package installed
+      """

features/package-update.feature

@@ -98,3 +98,23 @@ Feature: Update WP-CLI packages
       """
       Success: Packages updated.
       """
+
+  Scenario: Update packages with --no-interaction flag
+    Given an empty directory
+
+    When I run `wp package install danielbachhuber/wp-cli-reset-post-date-command`
+    Then STDOUT should contain:
+      """
+      Success: Package installed.
+      """
+
+    When I run `wp package update --no-interaction`
+    Then STDOUT should contain:
+      """
+      Using Composer to update packages...
+      """
+    And STDOUT should contain:
+      """
+      Packages updated.
+      """
+    And STDERR should be empty

features/package.feature

@@ -208,3 +208,22 @@ Feature: Manage WP-CLI packages
       """
       {NO_SUCH_PACKAGE_COMPOSER_JSON}
       """
+
+  Scenario: Uninstall a package with --no-interaction flag
+    Given an empty directory
+
+    When I run `wp package install runcommand/hook`
+    Then STDERR should be empty
+
+    When I run `wp package uninstall runcommand/hook --no-interaction`
+    Then STDERR should be empty
+    And STDOUT should contain:
+      """
+      Success: Uninstalled package.
+      """
+
+    When I run `wp package list`
+    Then STDOUT should not contain:
+      """
+      runcommand/hook
+      """

src/Package_Command.php

@@ -199,6 +199,9 @@ public function browse( $_, $assoc_args ) {
 	 * [--insecure]
 	 * : Retry downloads without certificate validation if TLS handshake fails. Note: This makes the request vulnerable to a MITM attack.
 	 *
+	 * [--interaction]
+	 * : Control interactive mode. Use `--no-interaction` to disable prompts (interactive by default). Useful for scripting.
+	 *
 	 * ## EXAMPLES
 	 *
 	 *     # Install a package hosted at a git URL.
@@ -216,7 +219,12 @@ public function browse( $_, $assoc_args ) {
 	public function install( $args, $assoc_args ) {
 		list( $package_name ) = $args;
 
-		$insecure = (bool) Utils\get_flag_value( $assoc_args, 'insecure', false );
+		$insecure    = (bool) Utils\get_flag_value( $assoc_args, 'insecure', false );
+		$interaction = Utils\get_flag_value( $assoc_args, 'interaction', true );
+
+		if ( ! $interaction ) {
+			$this->set_non_interactive_mode();
+		}
 
 		$this->set_composer_auth_env_var();
 		$git_package = false;
@@ -503,6 +511,11 @@ public function path( $args ) {
 	/**
 	 * Updates all installed WP-CLI packages to their latest version.
 	 *
+	 * ## OPTIONS
+	 *
+	 * [--interaction]
+	 * : Boolean flag that controls interactive mode (enabled by default). Use `--no-interaction` to disable prompts, which is useful for scripting.
+	 *
 	 * ## EXAMPLES
 	 *
 	 *     $ wp package update
@@ -518,8 +531,17 @@ public function path( $args ) {
 	 *     Generating autoload files
 	 *     ---
 	 *     Success: Packages updated.
+	 *
+	 * @param array $_ Unused positional arguments (none expected).
+	 * @param array $assoc_args Associative array of options.
 	 */
-	public function update() {
+	public function update( $_, $assoc_args = [] ) {
+		$interaction = Utils\get_flag_value( $assoc_args, 'interaction', true );
+
+		if ( ! $interaction ) {
+			$this->set_non_interactive_mode();
+		}
+
 		$this->set_composer_auth_env_var();
 		$composer = $this->get_composer();
 
@@ -562,6 +584,9 @@ public function update() {
 	 * [--insecure]
 	 * : Retry downloads without certificate validation if TLS handshake fails. Note: This makes the request vulnerable to a MITM attack.
 	 *
+	 * [--interaction]
+	 * : Control interactive prompts. Use `--no-interaction` to disable interactive questions (useful for scripting).
+	 *
 	 * ## EXAMPLES
 	 *
 	 *     # Uninstall package.
@@ -574,7 +599,12 @@ public function update() {
 	public function uninstall( $args, $assoc_args ) {
 		list( $package_name ) = $args;
 
-		$insecure = (bool) Utils\get_flag_value( $assoc_args, 'insecure', false );
+		$insecure    = (bool) Utils\get_flag_value( $assoc_args, 'insecure', false );
+		$interaction = Utils\get_flag_value( $assoc_args, 'interaction', true );
+
+		if ( ! $interaction ) {
+			$this->set_non_interactive_mode();
+		}
 
 		$this->set_composer_auth_env_var();
 		$package = $this->get_installed_package_by_name( $package_name );
@@ -1478,4 +1508,21 @@ private function get_github_default_branch( $package_name, $insecure = false ) {
 
 		return $default_branch;
 	}
+
+	/**
+	 * Sets environment variables to enable non-interactive mode.
+	 *
+	 * This prevents Git from prompting for credentials (e.g., SSH passwords),
+	 * which is useful for scripting and automation.
+	 *
+	 * Note: This uses putenv() which affects the entire PHP process, including
+	 * any Git operations spawned by Composer. This is intentional to ensure
+	 * non-interactive behavior propagates to all child processes.
+	 */
+	private function set_non_interactive_mode() {
+		// Prevent Git from prompting for credentials
+		putenv( 'GIT_TERMINAL_PROMPT=0' );
+		// Prevent SSH from prompting for passwords
+		putenv( 'GIT_SSH_COMMAND=ssh -o BatchMode=yes' );
+	}
 }