MCP
Connect ChatGPT to CastHub
Setup steps for a ChatGPT custom connector, what ChatGPT can do in CastHub, how permissions work, and the known limits.
Connect ChatGPT to CastHub to manage your digital signage presentations, devices, schedules, and alerts in natural language.
Prerequisites
An active CastHub account. The connector does not create accounts. Sign up first at https://dashboard.cast-hub.com/register-user.
The connector works with any CastHub plan, including the free tier. Feature access matches your existing account.
You can sign in with your CastHub email and password, Google, or Microsoft.
Custom connectors are available on ChatGPT paid plans. Verify your plan supports custom connectors before proceeding.
How to connect
- In ChatGPT, go to Settings, then Connectors, then Add a custom connector.
- Enter the connector URL:
https://webapi.cast-hub.com/mcp - Click Connect. You will be redirected to a CastHub sign-in page.
- Sign in with your CastHub credentials, or with Google or Microsoft.
- Approve access.
Enable the CastHub connector in your chat to use its tools. No API key is required. Authentication uses OAuth 2.0 with PKCE and dynamic client registration.
What you can do
Presentations
Example prompts:
“List my presentations.”
“Create a presentation called Lobby Loop with a welcome web page and our promo image.”
“Delete presentation 42.”
Internal images and videos can be uploaded and used as slides through a guided register, upload, and acknowledge flow.
Preview
After creating a presentation, ChatGPT returns a preview URL you can open in a browser to see it on a temporary preview device.
Devices and groups
Example prompts:
“Show all my devices.”
“Rename device 5 to Entrance.”
“Move device 12 to the Lobby group.”
Scheduling
Example prompts:
“Assign the weekday schedule to the Lobby group.”
“Show my weekly schedule.”
Alerts
Example prompts:
“Start a text alert on all groups: Building closing in 15 minutes.”
“Stop all alerts.”
Device commands
Example prompts:
“Reboot the Entrance display.”
“Turn the Lobby screen off.”
Disruptive commands prompt for confirmation before running.
Permissions and safety
Read-only tools that list or view devices, presentations, schedules, and dashboard data run freely. Write actions such as create and update are marked explicitly. Destructive actions such as delete, alerts, and reboots are marked so ChatGPT requests your confirmation before running them.
Capabilities summary
| Property | Value |
|---|---|
| Connector type | Remote (Streamable HTTP) |
| Authentication | OAuth 2.0 with PKCE and dynamic client registration |
| Access | Read and write |
| Tools | Approximately 45 across presentations, slide media, devices, device groups, schedules, alerts, device commands, and dashboard |
Limitations and troubleshooting
Custom connectors require a paid ChatGPT plan.
The connector requires a CastHub account. It cannot register new users.
Preview URLs target a temporary preview device. They do not affect your production displays.
If the connection fails or tools do not appear, remove the connector and add it again to re-run sign-in.
Support
support@cast-hub.com