GanttFather

GanttFather MCP server

A remote Model Context Protocol server for GanttFather, an online Gantt chart and Kanban tool. It lets an AI assistant read and edit your GanttFather projects: tasks, dates, dependencies, resources, the critical path, and the chart itself.

This repository holds documentation and the registry entry only. The server is hosted; there is nothing to install or run.

• URL: https://mcp.ganttfather.com/
• Transport: streamable HTTP
• Sign-in: OAuth 2.1 with dynamic client registration and PKCE (S256), scopes mcp:read and mcp:write. Clients that can't do OAuth can send a project token from GanttFather (AI Agents & API) as Authorization: Bearer <token>.
• Official MCP Registry: com.ganttfather/ganttfather
• Docs and setup guides: https://ganttfather.com/mcp/
• Price: free for one project with two editors; viewers and guests are free.

Add it to your client

The quickest way is to add the URL as a remote server and sign in when your client asks.

Claude (claude.ai and the desktop app): Settings, Connectors, Add custom connector, then paste https://mcp.ganttfather.com/.

Claude Code

claude mcp add --transport http ganttfather https://mcp.ganttfather.com/

VS Code (GitHub Copilot Chat), in .vscode/mcp.json:

{ "servers": { "ganttfather": { "type": "http", "url": "https://mcp.ganttfather.com/" } } }

GitHub Copilot CLI

copilot mcp add --transport http ganttfather https://mcp.ganttfather.com/

Then run /mcp auth ganttfather inside Copilot CLI.

Cursor, in ~/.cursor/mcp.json:

{ "mcpServers": { "ganttfather": { "url": "https://mcp.ganttfather.com/" } } }

Windsurf and Antigravity, in mcp_config.json (they read serverUrl):

{ "mcpServers": { "ganttfather": { "serverUrl": "https://mcp.ganttfather.com/" } } }

Codex

codex mcp add ganttfather --url https://mcp.ganttfather.com/

Gemini CLI, in settings.json (it needs httpUrl; a plain url means an older transport there):

{ "mcpServers": { "ganttfather": { "httpUrl": "https://mcp.ganttfather.com/" } } }

OpenCode, in opencode.json, then run opencode mcp auth ganttfather:

{ "$schema": "https://opencode.ai/config.json", "mcp": { "ganttfather": { "type": "remote", "url": "https://mcp.ganttfather.com/", "enabled": true } } }

Guides for ChatGPT, Gemini, Goose, n8n and others are at https://ganttfather.com/mcp/. Of the clients above, we have tested Claude end to end; reports from the others are welcome in Issues.

Tools

27 tools. Every tool sets readOnlyHint, destructiveHint and openWorldHint explicitly; writes that can overwrite or remove data are marked destructive, so your client can ask before running them.

Tool	Title	Kind
draft_support_email	Draft support email (never sends it)	read
get_critical_path	Get critical path	read
get_overdue_tasks	Get overdue tasks	read
get_project	Get project	read
get_project_summary	Get project summary	read
get_project_timeline	Get project timeline	read
get_task	Get task	read
list_dependencies	List dependencies	read
list_members	List members	read
list_projects	List projects	read
list_resources	List resources	read
list_tasks	List tasks	read
render_gantt_image	Render Gantt image (SVG or Mermaid)	read
show_gantt_chart	Show Gantt chart (interactive widget)	read
add_dependency	Add dependency	write, destructive
add_resource	Add resource	write
add_task_image	Add image to task	write
create_task	Create task	write
delete_resource	Delete resource	write, destructive
delete_task	Delete task	write, destructive
remove_dependency	Remove dependency	write, destructive
reorder_tasks	Reorder tasks	write, destructive
set_task_assignees	Set task assignees	write, destructive
set_task_dependencies	Set task dependencies	write, destructive
update_project_context	Update project context	write, destructive
update_resource	Update resource	write, destructive
update_task	Update task	write, destructive

Privacy and support

The assistant sees only the projects the signed-in account can see, and you can revoke its access at any time in GanttFather, under AI Agents & API. Privacy policy: https://ganttfather.com/privacy/. Support: [email protected].

License

The documentation and configuration in this repository are under the MIT License. The GanttFather service itself is proprietary.