create_flowchart
Create a flowchart on chhart.app using text-based DSL syntax. Returns a shareable URL to view and edit the flowchart.
LABSCO SUMMARY
A diagram you can send someone, out of a conversation you were already having.
Fetching the syntax help first is what makes this reliable: with the DSL rules in context, the assistant writes a diagram that renders on the first attempt rather than one that needs three corrections. Because the result is a live chhart.app URL rather than an image, the diagram stays editable after the conversation ends — which is usually what you want when a process description is going to change.
What it is
A generator for two diagram types on chhart.app. You write the diagram in a text DSL — or have the assistant write it — and the call returns a shareable URL to view and keep editing it.
What you get
- A flowchart built from the text DSL, with a title, returned as a link anyone you send it to can open
- A Sankey diagram from flow data, for the questions about where volume goes rather than what happens in what order
- The syntax documentation and worked examples for either diagram type, so the assistant writes valid DSL instead of guessing at it
Requirements
Node.js 20 or higher for the local path, which runs as npx -y chhart-mcp. A public endpoint at https://mcp.chhart.app/mcp needs nothing installed at all, and the same server can be self-hosted over Streamable HTTP on PORT, default 3000. Either way the diagram is created on chhart.app and the result is a URL there, so the content leaves your machine and the link is what you share. MIT.
Setup effort
One command — npx -y chhart-mcp
USE CASES
01
Turning a described process into a diagram
Explain the steps and branches in plain language and get a flowchart back as a link, with a title on it.
02
Showing where volume goes
Give the flows between stages — traffic, spend, users — and get a Sankey diagram that makes the proportions visible.
03
Getting the DSL right before generating
Pull the syntax and examples for the diagram type you want, so the first attempt renders instead of erroring.
3 tools
Counted once with only startup setup. Other versions, modes or optional credentials may expose a different list.
create_sankey
Create a Sankey diagram on chhart.app showing flows between nodes. Returns a shareable URL to view and edit the diagram.
get_syntax_help
Get documentation and examples for Chhart's flowchart and Sankey diagram syntax.
BEFORE YOU INSTALL
What to know first
Tools you get
3 tools when we connected.
Requires
An MCP-compatible client (Claude Desktop, Cursor, etc.)
Where it runs
Of the 3 documented clients, 2 run the server on your machine and 1 connects to a hosted endpoint.
CONTEXT COST
Light Standing cost
Rated by the size of the 3 tool definitions that ride along on every turn, not by how many there are
INSTALLATION
Connect your client
Server setup
npx
TERMINAL
npx -y chhart-mcpHosted endpoint
ENDPOINT URL
https://mcp.chhart.app/mcpAdd this hosted endpoint to your MCP client.
MCP Clients
Claude Desktop
CLAUDE DESKTOP · JSON
{
"mcpServers": {
"chhart": {
"command": "npx",
"args": [
"-y",
"chhart-mcp"
]
}
}
}Cursor
CURSOR · JSON
{
"mcpServers": {
"chhart": {
"command": "node",
"args": [
"<YOUR_PATH_TO_CHHART_MCP>/dist/index.js"
]
}
}
}Any MCP client — remote
ANY MCP CLIENT — REMOTE · JSON
{
"mcpServers": {
"chhart": {
"url": "https://mcp.chhart.app/mcp"
}
}
}
