gantt-planner

gantt-planner is a skill for Claude Code, Codex from serejaris/kimi-skills. It costs 70 tokens per session (1,631 once invoked), scanned A, original, MIT.

A tool that turns tasks and their dependencies into an interactive Gantt chart. It also uses Critical Path Method (CPM) to show which tasks determine the shortest possible project schedule and how much others can slip.

In plain words
What is it for?
Use it to schedule projects, visualize timelines, identify the critical path, and calculate spare time for tasks.
Why use it?
It makes task order, deadlines, dependencies, and schedule risks easier to see than a plain task list.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to schedule projects, visualize timelines, identify the critical path, and calculate spare time for tasks.

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Install with agentmods
npx agentmods add skills/serejaris/kimi-skills/gantt-planner
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 serejaris/kimi-skills --skill gantt-planner
Clone the repo
git clone --depth 1 https://github.com/serejaris/kimi-skills

Made for: Claude Code, Codex.

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.

agentmods badge for gantt-planner

README.md
[![agentmods](https://agentmods.dev/badge/skills/serejaris/kimi-skills/gantt-planner/github.svg)](https://agentmods.dev/skills/serejaris/kimi-skills/gantt-planner)
Your own site
<a href="https://agentmods.dev/skills/serejaris/kimi-skills/gantt-planner"><img src="https://agentmods.dev/badge/skills/serejaris/kimi-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.

agentmods 80×15 button for gantt-planner

Your own site · 80×15
<a href="https://agentmods.dev/skills/serejaris/kimi-skills/gantt-planner"><img src="https://agentmods.dev/badge/skills/serejaris/kimi-skills/gantt-planner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 70 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,631 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00070 $0.01631
Opus 5 $0.00035 $0.00816
Sonnet 5 $0.00014 $0.00326
Haiku 4.5 $0.00007 $0.00163

Measured 9d ago against content hash 9b56e0086d0c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, 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 9d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/gantt_generator.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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 · 152 lines

How it starts

The opening of the file, as written. The whole thing — 152 lines — stays where its author put it; the contents beside it link to each section on GitHub.

gantt-planner -- Interactive Gantt Chart & Critical Path Analysis

Automatically performs Critical Path Method (CPM) analysis on task lists and their dependencies, generating interactive HTML Gantt charts. Supports zooming, critical path filtering, hover details, and dependency arrow visualization.

Quick Start

Simplest usage — pass JSON directly:

python3 scripts/gantt_generator.py --json '{
  "project": "New Product Launch",
  "tasks": [
    {"id": "T1", "name": "Requirements Analysis", "duration": 5, "dependencies": []},
    {"id": "T2", "name": "UI Design", "duration": 4, "dependencies": ["T1"]},
    {"id": "T3", "name": "Backend Development", "duration": 8, "dependencies": ["T1"]},
    {"id": "T4", "name": "Frontend Development", "duration": 6, "dependencies": ["T2"]},
    {"id": "T5", "name": "Integration Testing", "duration": 3, "dependencies": ["T3", "T4"]},
    {"id": "T6", "name": "Deployment", "duration": 2, "dependencies": ["T5"]}
  ]
}' --output gantt.html

Read from a file with a specified start date:

python3 scripts/gantt_generator.py --file tasks.json --start-date 2026-05-01 --output gantt.html

Methodology: Critical Path Method (CPM)

Core Concepts

Term Abbreviation Meaning
Earliest Start ES The earliest point at which a task can begin
Earliest Finish EF The earliest point at which a task can be completed (ES + Duration)
Latest Start LS The latest a task can start without delaying the project
Latest Finish LF The latest a task can finish without delaying the project
Total Float TF LS − ES; the number of days a task can be delayed
Critical Path The sequence of tasks with zero float, determining the project's minimum duration

Calculation Steps

  1. Topological Sort: Order tasks by dependencies, detecting any circular references
  2. Forward Pass: Starting from the initial tasks, compute ES and EF for each task
    • ES = max(EF of all predecessors)
    • EF = ES + Duration
  3. Backward Pass: Working back from the final tasks, compute LS and LF
    • LF = min(LS of all successors)
    • LS = LF - Duration
  4. Identify the Critical Path: Tasks where float (LS − ES) equals 0 form the critical path

Read the full file on GitHub · 152 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

  1. 9d ago First seen · 152 lines · 70 tokens per session scan A 9b56e0086d0c

Subscribe to this mod's changes

gantt-planner is a skill published in the GitHub repository serejaris/kimi-skills (6 stars, last pushed 1mo ago), licensed MIT. It adds 70 tokens to every session and 1,631 once invoked, about $0.0003 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 2026-09-03.

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