diff --git a/src/api/ApiClient.ts b/src/api/ApiClient.ts
index feec9df8..54b8f78d 100644
--- a/src/api/ApiClient.ts
+++ b/src/api/ApiClient.ts
@@ -21,6 +21,21 @@ export class ApiClient {
 		return this._siteUrl;
 	}
 
+	async createPost(): Promise< void > {
+		const response = await this.playgroundClient.request( {
+			url: `/index.php?rest_route=/wp/v2/posts`,
+			method: 'POST',
+			body: {
+				title:
+					'New Post from API Client - ' +
+					( Math.random() + 1 ).toString( 36 ).substring( 7 ),
+				content: 'This is a new post created via the API client.',
+				status: 'publish',
+			},
+		} );
+		console.log( response, response.json );
+	}
+
 	async getPosts(): Promise< Post[] > {
 		const response = ( await this.get(
 			'/wp/v2/posts'
diff --git a/src/ui/preview/Playground.tsx b/src/ui/preview/Playground.tsx
index 7f58903e..c18ec2f0 100644
--- a/src/ui/preview/Playground.tsx
+++ b/src/ui/preview/Playground.tsx
@@ -100,9 +100,25 @@ function steps(): StepDefinition[] {
 			pluginName: 'Try WordPress',
 			pluginPath: '/wordpress/wp-content/plugins/try-wordpress',
 		},
+		{
+			step: 'mkdir',
+			path: '/wordpress/wp-content/mu-plugins',
+		},
+		{
+			step: 'writeFile',
+			path: '/wordpress/wp-content/mu-plugins/authenticate-rest-request.php',
+			data: authenticateRestRequest(),
+		},
 	];
 }
 
+function authenticateRestRequest(): string {
+	return `<?php
+add_filter( "rest_authentication_errors", "__return_true" );
+add_filter( "determine_current_user", function() { return 1; }, 99999 );
+`;
+}
+
 function deleteDefaultContent(): string {
 	return `<?php
 require_once 'wordpress/wp-load.php';