Create Sankey diagrams in Gemini

With the SankeyArt connector in Gemini, you turn an income statement, cash flow statement or budget into a Sankey diagram from a chat. This article shows how to add the connector, draw your first diagram, save it and change it. For an overview, see SankeyArt in Gemini.

SankeyArt in Gemini is in early access. SankeyArt isn't in Gemini's list of connectors yet, so you add it yourself as a custom connector.

Add SankeyArt to Gemini#

It works on every Gemini plan, the free one included. You need a SankeyArt account; a free one is enough.

1. On gemini.google.com, open Customise, go to Connectors and click + Custom.
2. Enter this URL and click Next: https://mcp.sankeyart.com/
3. Check that Gemini shows your Google account and click Connect.
4. Sign in to SankeyArt, or create a free account.

Google shows a notice that it hasn't reviewed custom connectors. SankeyArt works the same either way.

With a Google Workspace account, your admin may have to allow custom connectors first. In Gemini Enterprise, an admin adds SankeyArt for the whole team as an MCP server, with the same URL.

Draw your first diagram#

1. In a chat, type @SankeyArt.
2. Ask for a diagram. Attach a file, such as a PDF of an income statement, or type the figures. For example: "Draw a Sankey diagram of Demo Corp's income statement in $M: revenue 1,000, cost of revenue 600, operating expenses 250, income tax 30, net income 120."
3. Gemini answers with a link. Open it to see the diagram in the SankeyArt editor.

Gemini doesn't show the diagram in the chat. SankeyArt draws only the figures you or your files give Gemini. It sees the names and amounts in the diagram, not the rest of your conversation or your files.

Open the diagram in the editor#

In the editor you can fine-tune the diagram and export it. If you aren't signed in to SankeyArt in your browser, you sign in first.

• With a SankeyArt subscription, the diagram goes into your account.
• Without a subscription, you can change the diagram in the editor, but your edits aren't saved. Exports carry a small "created with SankeyArt.com" watermark.

The link keeps working for a year after it was last used.

Save diagrams to your SankeyArt account#

With a SankeyArt subscription, Gemini saves your diagrams in your account, opens them and changes them. It uses the SankeyArt account you linked when you added the connector.

Gemini asks you before it saves or changes a diagram in your account. Confirm to go ahead. If your plan has no free diagram slot left, Gemini can't save the diagram, but the editor link still opens it.

You can also ask for it: "Save that diagram in my SankeyArt account."

Billing admins have no access to diagrams, so Gemini can't save or open diagrams for them. See Roles and permissions.

Change a diagram#

Ask for the change in the same chat, for example: "Rename Operating expenses to OpEx and make the cost items orange."

• Saved diagram: Gemini changes the diagram in your account. Changes you made in the editor stay.
• Not saved: Gemini draws the diagram again, with a new link.

To work on a diagram you saved earlier, ask for it by name, for example: "Open my Demo Corp cash flow diagram." Gemini lists your diagrams and those your team shares with you. It can change only the ones you may edit. Some settings can only be changed in the editor; Gemini then gives you the editor link.

Disconnect SankeyArt#

Remove SankeyArt where you added it in Gemini. Removing it also disconnects your SankeyArt account.

Your saved diagrams stay in your SankeyArt account.