How To Connect YACSS To ChatGPT With MCP

MCP is the standard way an AI assistant talks to an outside app. Connecting YACSS over MCP gives ChatGPT a set of YACSS actions it can run for you — listing your clouds, drafting builds, publishing sites — always as you, and only what your plan allows.

Before you start: A ChatGPT account that supports connectors (Plus, Pro, Business, or Enterprise). No API key and no token to copy — you sign in with your normal YACSS login.

Your connector link: https://app.yacss.site/api/v1/mcp

Turn On Developer Mode

Custom connectors sit behind Developer mode in ChatGPT. Open Settings → Security and login → Advanced, and switch Developer mode on.

Open Plugins

Go to Plugins, then click the Plus icon.

Fill In The New Plugin Dialog

Fill the dialog in, tick the box confirming you trust this connector, then click Create.

Name — Type YACSS so it's easy to spot later
MCP Server URL — Paste the connector link (https://app.yacss.site/api/v1/mcp)
Authentication — Choose OAuth. Leave client ID and client secret blank

Step 3: Fill in the New Plugin dialog and click Create

Sign In To YACSS

ChatGPT opens a YACSS sign-in window. Click Sign in with YACSS.

Approve Access

Note: You're approving access for your own account only. You can revoke it at any time from the same MCP page in YACSS, under Connected apps.

Try It In A Chat

Start a new chat. Open the + menu in the message box, and pick YACSS under plugins.

Step 6: Open the plus menu and pick YACSS

Test The Connection

Try this prompt: "List my YACSS cloud accounts and templates." If it comes back with your own clouds and templates, you're done. If the list is empty but there's no error, the connection is fine — you simply haven't added any cloud accounts in YACSS yet.

Note: ChatGPT keeps this connection until you remove it — you won't need to sign in again each session.

Step 7: Test the connection with a prompt

Done! YACSS is now connected to ChatGPT via MCP.