WordPress MCP means letting an AI assistant read and work on a WordPress site through MCP, the Model Context Protocol, a common standard for connecting AI tools to outside systems. The official way to do it is the MCP Adapter plugin. Once installed, your site gets an MCP endpoint, and any MCP-compatible AI client that signs in with a WordPress account can use whatever the site exposes to it. The adapter contains no AI of its own and will not change anything by itself. What the AI can do depends on which abilities your site exposes and what the connecting account is allowed to do.
What the MCP Adapter does and does not do
Since WordPress 6.9 there is an Abilities API that lets core and plugins register the things they can do, one by one, such as reading posts or creating pages. The MCP Adapter is the bridge in the middle: it offers those registered abilities to AI clients in MCP format, over HTTP or STDIO. The official description is explicit that the adapter is only the server and transport layer and provides no AI features. It needs abilities on the site before it has anything to hand to an AI.
Registering an ability does not expose it, either. Only abilities marked as public for MCP are visible to the AI, and before anything runs, WordPress checks the permissions of the account that connected. In other words, the AI can reach exactly as far as the account you give it.
The latest release, 0.7.1, came out on October 15, 2026 and added a connection guide for site owners. Since 0.6.0 it requires WordPress 6.9 or newer, and the old standalone Abilities API plugin is no longer a supported way to install it. Also note that since version 1.3.0 of the official AI plugin, some abilities, such as reading content, are no longer registered by default; to let a connected AI use them, enable the Custom Abilities experiment under Settings > AI > Admin Experiments.
Before you connect: the steps
- Make sure you are on WordPress 6.9 or newer and take a full backup.
- Install MCP Adapter from the plugin directory. It creates a default endpoint at https://your-site/wp-json/mcp/mcp-adapter-default-server.
- Check that the site actually exposes abilities to MCP, whether from WordPress core, the official AI plugin, or another plugin that registers its own.
- Create a dedicated account for the AI with only the role it needs (if it only drafts posts, do not make it an administrator), then generate an application password on that account's profile page.
- Configure the connection in your AI client. The example on the WordPress Developer Blog uses the @automattic/mcp-wordpress-remote proxy with three values: the endpoint (WP_API_URL), the username (WP_API_USERNAME) and the application password (WP_API_PASSWORD).
- Start with something read-only, such as listing recent posts, to confirm the connection works and the AI sees what you expect. Then move on to changes.
Think these through before an AI touches your site
MCP lets an AI write to your site directly, and the flip side of convenience is that mistakes land directly too. Permissions matter most: the AI gets every permission of the account it connects with, so never hand it your own administrator account. A dedicated account with just enough of a role is the safe setup. Application passwords can be revoked from the profile page at any time, so if you stop using one or suspect it leaked, revoke that one without affecting your own login.
Second, backups and undo. A wrong edit to one page is easy to fix; a broken setting or plugin is not. Have a restorable backup every time before the AI acts, ideally one that can roll back to a specific step. Third, scope: expose only the abilities you need right now. The plugin directory also has third-party plugins that add per-ability toggles, permission controls and audit logs, and some AI plugins ship their own MCP server, such as AI Engine, covered in WordPress AI plugins in 2026.
Who should wire up MCP themselves
If you already use an MCP-compatible AI client, can read a config file and are willing to manage account permissions and backups yourself, the MCP Adapter is a great starting point. It is maintained by the WordPress project, and once it is connected your AI assistant can work with the site in a consistent way. Developers can also register abilities for their own plugins through the Abilities API so the AI can use custom features.
If all you want is to tell an AI what to change and have it done, without dealing with application passwords, config files and permissions, setting up MCP may be more work than the edit itself. That is the part WP × Roamer AI takes care of. Once your site is set up on RoamerHost, you click "Connect site" in the Roamer AI sidebar and you are connected, with no password to paste. Describe what you want in plain language; it shows you a plan to confirm before it starts, takes a snapshot before every step, sends you screenshots when it is done, and rolls back when you say "undo". If you have no developer, want to direct an AI in your own words, and want someone else looking after hosting and backups, choose WP × Roamer AI.
| Item | Wiring up the MCP Adapter yourself | WP × Roamer AI |
|---|---|---|
| Connecting to the site | Application password plus a config file in your AI client | Click "Connect site" in the Roamer AI sidebar, no password to paste |
| What the AI can do | Whatever abilities the site exposes | Build pages, redesign, menus and headers, forms, SEO, plugins and updates |
| If something goes wrong | Your own backups and restores | A snapshot before every step; say "undo" to roll back |
| Cost | The plugin is free; AI service costs are separate | WP × Roamer AI Advanced, billed yearly at an average of NT$999 per month, hosting and Roamer AI included |
If you only need the website and prefer to do the work yourself, the Basic plan is billed yearly at an average of NT$299 per month. WordPress on RoamerHost is the full version and you can install any plugin, so you are free to try the MCP Adapter yourself as well. Plans are on the WordPress plans page, and other ways to have AI edit a WordPress site are compared in Is there a service that uses AI to edit my WordPress site?
FAQ
Once MCP Adapter is installed, will an AI start changing my site on its own?
No. It only lets an AI client connect. The AI acts when you give it instructions in the client, and only through the abilities the site exposes, within the permissions of that account.
Does the MCP Adapter cost anything?
The plugin is in the official WordPress plugin directory and is free. What you pay for is the AI service you use.
What does my hosting need?
WordPress 6.9 or newer, and the ability to install your own plugins. Some site builders restrict plugin installs, so check your plan first.
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