The best free Gantt chart maker — no signup, works offline, real-time collaboration. Its built-in MCP server lets Claude (web, Desktop, or Code) list, create, and edit your project timelines by chatting, using your own OAuth account.
Server Config
{
"mcpServers": {
"ganttchartmaker": {
"type": "http",
"url": "https://mcp.ganttchartmaker.app/mcp"
}
}
}