Connect Claude

Use Terno from Claude on the web and in Claude Desktop. Claude can then query your Terno data sources in any chat.

Server URL: https://mcp.terno.ai/mcp

Preview server URL: https://mcp.terno.ai/mcp/preview (adds app connectors such as Google Ads and GA4)

Before you start

• A Claude account. Free plans can add one custom connector.
• A Terno AI account. You don’t need to sign up first: when you connect, Terno takes you to sign up if you don’t have an account, or to sign in if you’re signed out, and then shows the consent screen.
• No data source is needed to connect. Ask your assistant to connect one and Terno gives it a link where you add the connection details in Terno. You can also add one in the app; see Connectors.

Connect Terno

1. In Claude, open Customize → Connectors.
2. Click + Add, then Add custom connector.
3. Name it Terno, paste https://mcp.terno.ai/mcp (or https://mcp.terno.ai/mcp/preview for the preview server), and click Continue.
4. Review the detected sign-in settings. Terno uses OAuth, so you don’t need to fill in a client ID or headers. Click Continue, then Add.
5. Sign in to Terno when asked.
6. In a chat, click + at the lower left, choose Connectors, and switch Terno on.

Note

On Team and Enterprise plans, an Owner adds Terno once: Organization settings → Connectors → Add → Custom → Web. Members then find it under Customize → Connectors and click Connect to sign in.

Check it works

Ask your assistant something like:

• “Which data sources do I have in Terno?”
• “Using Terno, show the top 10 customers by revenue this year.”

It should call Terno’s tools and answer from your data.

App connectors (preview)

The main server works with your databases and warehouses. To also use app connectors such as Google Ads and GA4, add the preview server in the same way, using https://mcp.terno.ai/mcp/preview. It will come to the main server soon.

Troubleshooting

The sign-in window doesn’t open, or sign-in fails

Complete the sign-in in the browser window or tab your assistant opens, using your Terno account. If it times out, start the connection again.

Terno’s tools don’t show up

Check the server URL is exactly https://mcp.terno.ai/mcp (or https://mcp.terno.ai/mcp/preview for the preview server), and that the Terno server is switched on in your assistant.

”No data sources” or empty answers

Connect a data source in Terno first. The assistant only sees what’s connected in your Terno workspace, within your access rules.

Disconnect

Remove the Terno connector or server in your assistant.