Use SankeyArt in Claude Code

With SankeyArt in Claude Code, you turn the financial statements in your project, as CSV, Excel or PDF files, into Sankey diagrams. This article shows how to add SankeyArt, draw your first diagram, save it and change it. For an overview, see SankeyArt in Claude Code.

Add SankeyArt to Claude Code#

If you already added SankeyArt to Claude on the web, you may not need to do anything. When Claude Code is signed in with the same claude.ai account, it uses the connectors you added there. Run /mcp in Claude Code to check. Adding SankeyArt again would connect it twice.

Otherwise, pick one of these two.

One command#

Run in your terminal:

claude mcp add --transport http --scope user sankeyart https://mcp.sankeyart.com/

The plugin#

The plugin brings SankeyArt and a skill that helps Claude lay out cash flow statements, balance sheets and budgets. In Claude Code, run both:

/plugin marketplace add sankeyart/claude-plugin
/plugin install sankeyart@sankeyart

If you ran the one command before, remove it, so SankeyArt isn't connected twice:

claude mcp remove sankeyart --scope user

Draw your first diagram#

1. Start Claude Code in your project.
2. Ask for a diagram and name the file, for example: "Turn reports/income-statement-2025.xlsx into a Sankey diagram."
3. Claude Code answers with a link. Open it to see the diagram in the SankeyArt editor.

A terminal can't show the diagram, so you always get a link. Drawing needs no SankeyArt account.

Open the diagram in the editor#

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.

Save diagrams to your SankeyArt account#

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

1. In Claude Code, run /mcp.
2. Choose sankeyart and Authenticate.
3. Sign in to SankeyArt in your browser and allow access.

From then on, Claude Code saves each new diagram in your account by itself, without the watermark. You can also ask: "Save that diagram in my SankeyArt account." If your plan has no free diagram slot left, Claude Code can't save the diagram, but the editor link still opens it.

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

Change a diagram#

Ask for the change in the same session, for example: "Group budget.csv by department instead."

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

To work on a diagram you saved earlier, ask: "Which diagrams do I have in SankeyArt?" Claude Code 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 Code then gives you the editor link.

Remove SankeyArt#

If you added SankeyArt with the one command, run:

claude mcp remove sankeyart --scope user

If you installed the plugin, run:

claude plugin uninstall sankeyart@sankeyart

To sign out of SankeyArt but keep it in Claude Code, run claude mcp logout sankeyart, or choose Clear authentication for SankeyArt in /mcp.

If SankeyArt comes from your claude.ai account, remove it there. See Create Sankey diagrams in Claude.

Your saved diagrams stay in your SankeyArt account.