What is gantt-planner?

A planning tool that creates or updates Excel Gantt charts for construction and infrastructure projects. A Gantt chart shows work, dates, dependencies, and milestones on a timeline.

Use it to build work hierarchies, set task dependencies, identify the critical path, allocate resources, add milestones, and account for seasonal limits.

It helps turn contract and project information into an organized production schedule that accounts for links between tasks, resources, weather, and critical work.

gantt-planner — Skill for Claude Code by alexgrebeshok-coder

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add alexgrebeshok-coder/ai-pmo-skills --skill gantt-planner

Clone the repo

git clone --depth 1 https://github.com/alexgrebeshok-coder/ai-pmo-skills

Made for: Claude Code.

Or install ai-pmo-skills, the plugin that ships this one along with the rest of its 11 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/alexgrebeshok-coder/ai-pmo-skills/gantt-planner/github.svg)](https://agentmods.dev/skills/alexgrebeshok-coder/ai-pmo-skills/gantt-planner)

Your own site

<a href="https://agentmods.dev/skills/alexgrebeshok-coder/ai-pmo-skills/gantt-planner"><img src="https://agentmods.dev/badge/skills/alexgrebeshok-coder/ai-pmo-skills/gantt-planner/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/alexgrebeshok-coder/ai-pmo-skills/gantt-planner"><img src="https://agentmods.dev/badge/skills/alexgrebeshok-coder/ai-pmo-skills/gantt-planner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,461 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00076	$0.01461
Opus 5	$0.00038	$0.00731
Sonnet 5	$0.00015	$0.00292
Haiku 4.5	$0.00008	$0.00146

Measured 12d ago against content hash 20bc00d48f69, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

gantt-planner scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/gantt-planner/SKILL.md · 157 lines

How it starts

The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Gantt Planner — Планировщик графиков проекта

Назначение

Создание профессиональных диаграмм Ганта в Excel для строительных и инфраструктурных проектов с учётом:

Зависимостей между работами
Критического пути
Распределения ресурсов
Вех (milestones)
Сезонных ограничений (для северных регионов)

Workflow

Шаг 1: Сбор исходных данных

Запроси у пользователя:

Источник данных:
- Контракт/договор (сроки, объёмы)
- Техническое задание
- Смета/ведомость объёмов работ
- Существующий график (для обновления)
Параметры проекта:
- Дата начала и окончания
- Ключевые вехи (приёмка, ввод в эксплуатацию)
- Ограничения (погода, сезонность, ресурсы)

Шаг 2: Формирование WBS

Построй иерархическую структуру работ:

1. Подготовительный период
   1.1 Мобилизация техники
   1.2 Обустройство стройплощадки
   1.3 Геодезическая разбивка
2. Основной период
   2.1 Земляные работы
   2.2 Устройство основания
   2.3 Укладка покрытия
3. Завершающий период
   3.1 Благоустройство
   3.2 Демобилизация
   3.3 Сдача заказчику

Шаг 3: Определение зависимостей

Типы связей:

FS (Finish-to-Start) — стандартная (предыдущая заканчивается → следующая начинается)
SS (Start-to-Start) — параллельный старт
FF (Finish-to-Finish) — параллельное завершение
Lag — задержка между работами

Шаг 4: Расчёт критического пути

Определи длительность каждой работы
Рассчитай ранние и поздние сроки
Найди работы с нулевым резервом — это критический путь
Выдели критический путь красным цветом

Шаг 5: Генерация Excel

Используй скилл xlsx для создания файла со структурой:

Лист 1: Диаграмма Ганта

№	Код WBS	Наименование работ	Длительность	Начало	Окончание	Предшественник	Ресурсы	[Календарная шкала]

Лист 2: Ресурсы

Ресурс	Тип	Доступность	Загрузка по периодам

Read the full file on GitHub · 157 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

12d ago First seen · 157 lines · 76 tokens per session scan A 20bc00d48f69

Subscribe to this mod's changes

gantt-planner is a skill published in the GitHub repository alexgrebeshok-coder/ai-pmo-skills (10 stars, last pushed 6mo ago), licensed MIT. It adds 76 tokens to every session and 1,461 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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