Before you start
Trades, project documents, start or required handover date, closures and procurement lead times. The generator uses Python and openpyxl.
Construction scheduling with Claude: check dependencies before the Gantt →
1. Download the native pack
Keep the complete ZIP without extracting it. If already installed and enabled, skip to step 3.
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Planning-Chantier
2. Install and enable in Claude
In Customize > Skills, use + > Create skill > Upload a skill to import the ZIP, then enable it. Check code execution and file creation. Attaching Markdown to a chat does not install a skill.
3. Prepare the inputs
Provide known durations, dependencies and permitted overlaps. Separate contractor commitments from assumptions. Identify non-working weeks.
4. Request the file and its assumptions
Request the .xlsx and its config.json. The Gantt is static: changing dates requires updating the configuration and regenerating the file. Ask Claude to disclose if the script was not run.
A request to try
Use my planning-chantier skill and its script. Fictional example: start 5 October 2026; task A lasts 2 weeks, then B lasts 1; closed during the week of 19 October. No overlap allowed. Deliver the Gantt .xlsx and config.json. Check that B starts after A and outside closure. Separate assumptions from confirmed dates.
5. Check the result
- Check every dependency and closure.
- Compare dates, week columns and Gantt bars.
- Keep the configuration with the schedule version.
Files and advanced installation
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Planning-Chantier
With Claude Code already installed, run this command in your project terminal, restart Claude Code and invoke the skill with your data.
npx educasium --skill planning-chantier --global