Create Sankey diagrams in Claude

Last updated November 11, 2026

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

The connector works on every Claude plan. On the Free plan, you can add one custom connector, which can be SankeyArt.

  1. Open Add to Claude. claude.ai opens Customize → Connectors with SankeyArt filled in. To add it by hand, choose Add custom connector, name it SankeyArt and enter this URL: https://mcp.sankeyart.com/
  2. Choose Sign in when needed and Claude's published identity.
  3. Add the connector.

You can now draw diagrams. You don't need a SankeyArt account for that. SankeyArt is now also in Claude Desktop and the mobile apps, when you are signed in to the same Claude account.

The plugin instead of the connector#

On paid Claude plans with code execution turned on, you can install the SankeyArt plugin instead. It brings the connector and a skill that helps Claude lay out cash flow statements, balance sheets and budgets. Add the connector or the plugin, not both.

  1. On claude.ai, open Customize → Plugins and choose Add → Add marketplace.
  2. Enter sankeyart/claude-plugin and install SankeyArt from it.
  3. If you added the connector before, remove it.
  1. Start a new chat.
  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. Claude shows the diagram in the chat. Select Edit in SankeyArt to open it in the SankeyArt editor.

SankeyArt draws only the figures you or your files give Claude. It sees the names and amounts in the diagram, not the rest of your conversation or your files.

In the editor you can fine-tune the diagram and export it. When you open the link, you sign in to SankeyArt or create an account 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.

With a SankeyArt subscription, Claude can save your diagrams in your account, open them and change them.

  1. Ask Claude: "Save that diagram in my SankeyArt account."
  2. The first time, Claude shows a button that signs you in to SankeyArt. Sign in and allow access.

From then on, Claude saves each new diagram in your account by itself, without the watermark. If your plan has no free diagram slot left, Claude can't save the diagram, but the editor link still opens it.

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

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

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

To work on a diagram you saved earlier, ask for it by name, for example: "Open my Demo Corp cash flow diagram and tell me the operating cash flow." Claude 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; Claude then gives you the editor link.

  • Connector: on claude.ai, open Customize → Connectors, select the three dots next to SankeyArt and choose Remove.
  • Plugin: open Customize → Plugins, open SankeyArt, open its menu and choose Remove. To keep the plugin but disconnect your SankeyArt account, disconnect SankeyArt under Customize → Connectors.

Your saved diagrams stay in your SankeyArt account.

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