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.
Overview
Manage your Gantt charts straight from Claude. Gantt Chart Maker is a free, browser-based project-timeline tool; its hosted MCP server lets an AI assistant read and edit your charts using your own account (OAuth — scoped to your charts, revocable).
- App: https://ganttchartmaker.app
- Setup guide: https://ganttchartmaker.app/mcp/
- MCP endpoint:
https://mcp.ganttchartmaker.app/mcp(streamable HTTP + OAuth)
Server Config
{
"mcpServers": {
"ganttchartmaker": {
"type": "http",
"url": "https://mcp.ganttchartmaker.app/mcp"
}
}
}