diff --git a/packages/cli/src/commands/extensions/install.test.ts b/packages/cli/src/commands/extensions/install.test.ts
index 6bf5c8608f..707536bd3a 100644
--- a/packages/cli/src/commands/extensions/install.test.ts
+++ b/packages/cli/src/commands/extensions/install.test.ts
@@ -5,14 +5,19 @@
  */
 
 import { describe, it, expect } from 'vitest';
-import { installCommand } from './install.js';
+import { installCommand, handleInstall } from './install.js';
 import yargs from 'yargs';
+import * as extension from '../../config/extension.js';
+
+vi.mock('../../config/extension.js', () => ({
+  installExtension: vi.fn(),
+}));
 
 describe('extensions install command', () => {
   it('should fail if no source is provided', () => {
     const validationParser = yargs([]).command(installCommand).fail(false);
     expect(() => validationParser.parse('install')).toThrow(
-      'Either a git URL --source or a --path must be provided.',
+      'Either --source or --path must be provided.',
     );
   });
 
@@ -23,3 +28,22 @@ describe('extensions install command', () => {
     ).toThrow('Arguments source and path are mutually exclusive');
   });
 });
+
+describe('extensions install with org/repo', () => {
+  it('should call installExtension with the correct git URL', async () => {
+    const consoleLogSpy = vi.spyOn(console, 'log').mockImplementation(() => {});
+    const installExtensionSpy = vi
+      .spyOn(extension, 'installExtension')
+      .mockResolvedValue('test-extension');
+
+    await handleInstall({ source: 'test-org/test-repo' });
+
+    expect(installExtensionSpy).toHaveBeenCalledWith({
+      source: 'https://github.com/test-org/test-repo.git',
+      type: 'git',
+    });
+    expect(consoleLogSpy).toHaveBeenCalledWith(
+      'Extension "test-extension" installed successfully and enabled.',
+    );
+  });
+});
diff --git a/packages/cli/src/commands/extensions/install.ts b/packages/cli/src/commands/extensions/install.ts
index af411c3d47..4823f5848e 100644
--- a/packages/cli/src/commands/extensions/install.ts
+++ b/packages/cli/src/commands/extensions/install.ts
@@ -17,12 +17,43 @@ interface InstallArgs {
   path?: string;
 }
 
+const ORG_REPO_REGEX = /^[a-zA-Z0-9-]+\/[\w.-]+$/;
+
 export async function handleInstall(args: InstallArgs) {
   try {
-    const installMetadata: ExtensionInstallMetadata = {
-      source: (args.source || args.path) as string,
-      type: args.source ? 'git' : 'local',
-    };
+    let installMetadata: ExtensionInstallMetadata;
+
+    if (args.source) {
+      const { source } = args;
+      if (
+        source.startsWith('http://') ||
+        source.startsWith('https://') ||
+        source.startsWith('git@')
+      ) {
+        installMetadata = {
+          source,
+          type: 'git',
+        };
+      } else if (ORG_REPO_REGEX.test(source)) {
+        installMetadata = {
+          source: `https://github.com/${source}.git`,
+          type: 'git',
+        };
+      } else {
+        throw new Error(
+          `The source "${source}" is not a valid URL or "org/repo" format.`,
+        );
+      }
+    } else if (args.path) {
+      installMetadata = {
+        source: args.path,
+        type: 'local',
+      };
+    } else {
+      // This should not be reached due to the yargs check.
+      throw new Error('Either --source or --path must be provided.');
+    }
+
     const extensionName = await installExtension(installMetadata);
     console.log(
       `Extension "${extensionName}" installed successfully and enabled.`,
@@ -35,11 +66,12 @@ export async function handleInstall(args: InstallArgs) {
 
 export const installCommand: CommandModule = {
   command: 'install [--source | --path ]',
-  describe: 'Installs an extension from a git repository or a local path.',
+  describe:
+    'Installs an extension from a git repository (URL or "org/repo") or a local path.',
   builder: (yargs) =>
     yargs
       .option('source', {
-        describe: 'The git URL of the extension to install.',
+        describe: 'The git URL or "org/repo" of the extension to install.',
         type: 'string',
       })
       .option('path', {
@@ -49,9 +81,7 @@ export const installCommand: CommandModule = {
       .conflicts('source', 'path')
       .check((argv) => {
         if (!argv.source && !argv.path) {
-          throw new Error(
-            'Either a git URL --source or a --path must be provided.',
-          );
+          throw new Error('Either --source or --path must be provided.');
         }
         return true;
       }),