Your AI assistant can make real Gantt charts

Connect it in under a minute

Copy the URL — that's the whole integration.

Claude

Settings → Connectors → Add custom connector. Paste the endpoint URL. Then ask: "Create a Gantt chart for a 6-week website redesign."

ChatGPT

Enable Developer Mode in Settings → Connectors, add the endpoint as an MCP connector — or just use our custom GPT from the GPT store.

Cursor

Add the endpoint under Settings → MCP as a streamable-http server, or run the local package: npx @loopgantt/mcp-server.

What your assistant can do with it

create_gantt

Tasks + dependencies in, a scheduled chart out: working-day dates, critical path, float, a PNG rendering and a share link — computed by the same CPM engine the app uses.

schedule_project

Pure scheduling math with nothing stored: send tasks and dependencies, get dates, critical path and float back.

list_templates / get_template

23 industry templates with full task lists, ready to adapt into a plan.

plan_project prompt

A built-in prompt that turns a goal, a deadline and a team size into a well-structured plan request.

What happens to the chart

Every chart gets a private link where anyone can view it and export PNG or PDF — free. Links last 7 days (30 once opened). One click saves the chart to a free LoopGantt account, where it becomes a fully editable project with six synced views.

• Gantt, Kanban, Calendar, Table, Dashboard and WBS — all synced
• Unlimited plan generation — your assistant does the thinking, our engine does the scheduling
• Free to create, free to view, free to export PNG/PDF

Prefer plain HTTP?

The MCP server is a thin layer over a public keyless API — one POST creates a chart and returns the schedule, critical path and share link.

POST https://loopgantt.com/api/v1/gantt
Content-Type: application/json

{
  "name": "Website redesign",
  "tasks": [
    { "name": "Wireframes", "durationDays": 5 },
    { "name": "Visual design", "durationDays": 7, "dependencies": [0] },
    { "name": "Build", "durationDays": 10, "dependencies": [1] }
  ]
}

• OpenAPI 3.1 spec
• JSON import schema
• Source on GitHub

Questions

Do I need a LoopGantt account or API key?

No. Chart creation, scheduling, templates, viewing and PNG/PDF export are keyless and free. An account only enters the picture if you want to keep a chart forever and edit it in the app — the free tier covers that too.

Which AI assistants work with it?

Anything that speaks MCP over streamable HTTP: Claude (custom connectors), ChatGPT (developer-mode connectors and our custom GPT), Cursor, and any client using the MCP SDK. A local stdio package is available on npm as @loopgantt/mcp-server.

What are the limits?

Charts are capped at 300 tasks and rate-limited per network — generous for real use, tight enough to stop abuse. Unclaimed charts expire after 7 days, or 30 once someone opens the link. Claiming a chart into a free account keeps it permanently.