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Agent skill

Gantt Roadmap

by mohitagw15856 in mohitagw15856/pm-claude-skills

Turn a plan or set of milestones into a timeline / Gantt chart.

MITAuto-check passedProduct & Project Management

Install Gantt Roadmap

skills CLI
$ npx skills add mohitagw15856/pm-claude-skills --skill gantt-roadmap -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install mohitagw15856/pm-claude-skills gantt-roadmap --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/gantt-roadmap .claude/skills/gantt-roadmap && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
gantt-roadmap
GitHub stars
1.4k
Token cost
~884 tokens
SKILL.md length
378 words
Files
1
Skills in repo
1,348
Repo updated
First seen
Licence
MIT

At a glance

Turn a plan or set of milestones into a timeline / Gantt chart.

  • Asked to build a roadmap
  • SKILL.md covers Required Inputs, Output Format, Mermaid Rules (so it renders) and Quality Checks, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Schedule phases

What it does

Gantt Roadmap is an agent skill from mohitagw15856/pm-claude-skills. Turn a plan or set of milestones into a timeline / Gantt chart. Use when asked to build a roadmap, schedule phases, show a project timeline, or visualize what happens when. Produces a ready-to-render Mermaid Gantt chart (renders live, exportable as PNG/SVG) — and, because it has real dates, the result also exports to a calendar (.ics) — plus notes on the critical path and risks.

Its SKILL.md is about 880 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Product & Project Management, covering Project management and Diagrams. It works with Mermaid. The repository describes itself as: 1255 professional Agent Skills for Claude, ChatGPT, Gemini, Cursor & Codex — PRDs, postmortems, leases, medical bills, layoffs, go-bags, new countries. Plain markdown, MIT, in… The licence is MIT.

When your agent uses it

  • Asked to build a roadmap
  • Schedule phases
  • Show a project timeline
  • Visualize what happens when

Example prompts

  • “/gantt-roadmap”

What it can do on your machine

Read from SKILL.md and the folder at commit 1cbf1f0. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are mermaid).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Gantt Roadmap loads about 884 tokens when it runs. Until then it costs about 99 tokens; SKILL.md has 378 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~99
When it runs · the whole SKILL.md, loaded when a task matches
~884

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from mohitagw15856/pm-claude-skills at commit 1cbf1f0, republished under its MIT licence (© mohitagw15856). 378 words, ~884 tokens.

Download SKILL.mdSave it as .claude/skills/gantt-roadmap/SKILL.md (or your agent's skills folder).
name
gantt-roadmap
description
Turn a plan or set of milestones into a timeline / Gantt chart. Use when asked to build a roadmap, schedule phases, show a project timeline, or visualize what happens when. Produces a ready-to-render Mermaid Gantt chart (renders live, exportable as PNG/SVG) — and, because it has real dates, the result also exports to a calendar (.ics) — plus notes on the critical path and risks.

Gantt / Roadmap Skill

A list of tasks doesn't show what runs in parallel, what blocks what, or where the crunch is. A Gantt chart does. This skill turns a plan into a Mermaid Gantt chart with phases (sections), dated tasks, dependencies, and milestones — a real schedule, not a wish list. Because the output carries real dates, the playground can also export it straight to a calendar (.ics).

Required Inputs

Ask for these only if they aren't already provided:

  • The work — phases and tasks to schedule.
  • Timing — a start date, and durations or end dates (or relative ordering you can date from the start).
  • Dependencies — what must finish before what can start.
  • Milestones — the dated checkpoints (kickoff, beta, GA, launch).

If exact dates aren't given, anchor to a start date and lay tasks out by stated duration/order; flag the dates as planning estimates.

Output Format

[Project] — roadmap

One line on the time span and goal.

mermaid
gantt
    title [Project] roadmap
    dateFormat YYYY-MM-DD
    axisFormat %b %d
    section Discovery
        Research            :done,    r1, 2026-07-01, 10d
        Spec sign-off       :milestone, m1, 2026-07-15, 0d
    section Build
        Core build          :active,  b1, after m1, 20d
        Integrations        :         b2, after b1, 10d
    section Launch
        Beta                :milestone, m2, 2026-08-25, 0d
        GA                  :milestone, m3, 2026-09-10, 0d

Critical path — the chain of dependent tasks that sets the end date.

Risks / buffers — where the schedule is tight, what could slip, where buffer exists.

Assumptions — any dates you estimated rather than were given.

Mermaid Rules (so it renders)

  • Start with gantt, then title, dateFormat YYYY-MM-DD, optional axisFormat.
  • Group with section Name. Task line: Label : [status,] id, start, duration (e.g. :active, b1, 2026-07-01, 20d).
  • Dependencies use after <id> as the start. Milestones use the milestone tag with 0d.
  • Use real ISO dates (YYYY-MM-DD) so the calendar (.ics) export works.
Show full SKILL.md (135 more words)Show less

Quality Checks

  • Tasks are grouped into phases (sections) and have real start dates/durations
  • Dependencies use after so the schedule reflects what blocks what
  • Milestones are marked as milestones, not full-width bars
  • The critical path is identified, with risks/buffers noted
  • The Mermaid block renders, and dates are ISO so .ics export works

Anti-Patterns

  • Do not list tasks with no dates or durations — that's a checklist, not a timeline
  • Do not ignore dependencies — overlapping things that can't overlap is a fake plan
  • Do not draw milestones as long bars — they're points in time
  • Do not use ambiguous date formats — stick to YYYY-MM-DD
  • Do not present estimated dates as commitments — flag assumptions

Based On

Project scheduling (Gantt charts, critical path, milestones, dependencies), expressed as renderable Mermaid.

Example Trigger Phrases

  • "Build a roadmap."
  • "Schedule phases."
  • "Show a project timeline."

© mohitagw15856, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/gantt-roadmap of mohitagw15856/pm-claude-skills.

Open the folder on GitHubat commit 1cbf1f0

Compare with similar skills

Gantt Roadmap next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Gantt Roadmap compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Gantt Roadmap this skillmohitagw15856/pm-claude-skills1.4k—~884Automated safety check: PassMIT
Mermaid Gantt Chart Generatorjeremylongshore/tons-of-skills-marketplace2.8k—~591Automated safety check: PassMIT
Ichartjswanghetommy/ichartjs352—~4.3kAutomated safety check: PassApache-2.0
B2B PRD GeneratorpmYangKun/create-prd-skill348—~879Automated safety check: PassNone
Design Decknicobailon/pi-design-deck292—~4.3kAutomated safety check: PassNone
PRD GeneratorFokkyp/claude-skills226—~1.9kAutomated safety check: PassNone

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Works with

Categories

Questions about Gantt Roadmap

What does Gantt Roadmap do?

Turn a plan or set of milestones into a timeline / Gantt chart. Gantt Roadmap is an agent skill from mohitagw15856/pm-claude-skills. Turn a plan or set of milestones into a timeline / Gantt chart.

When should I use Gantt Roadmap?

Gantt Roadmap fits situations like: asked to build a roadmap; schedule phases; show a project timeline; visualize what happens when.

How do I install Gantt Roadmap in Claude Code?

Run `npx skills add mohitagw15856/pm-claude-skills --skill gantt-roadmap -a claude-code`. Or copy the skill folder (skills/gantt-roadmap in mohitagw15856/pm-claude-skills) into .claude/skills/gantt-roadmap in your project. Claude Code loads it when a task matches its description.

How do I install Gantt Roadmap in Codex?

Run `npx skills add mohitagw15856/pm-claude-skills --skill gantt-roadmap -a codex`. Or copy the skill folder (skills/gantt-roadmap in mohitagw15856/pm-claude-skills) into .agents/skills/gantt-roadmap in your project. Codex loads it when a task matches its description.

Can I use Gantt Roadmap in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add mohitagw15856/pm-claude-skills --skill gantt-roadmap -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/gantt-roadmap, .gemini/skills/gantt-roadmap, .github/skills/gantt-roadmap and .opencode/skills/gantt-roadmap in your project.

What does Gantt Roadmap need to run?

SKILL.md names no scripts, command-line tools or credentials: Gantt Roadmap is instructions for the agent only.

Does Gantt Roadmap access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Gantt Roadmap safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Gantt Roadmap use?

Gantt Roadmap is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Gantt Roadmap use?

About 884 tokens (SKILL.md is roughly 3.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Gantt Roadmap?

Skills that share tags, products or a category with Gantt Roadmap: Mermaid Gantt Chart Generator (jeremylongshore/tons-of-skills-marketplace, 2.8k stars), Ichartjs (wanghetommy/ichartjs, 352 stars), B2B PRD Generator (pmYangKun/create-prd-skill, 348 stars) and Design Deck (nicobailon/pi-design-deck, 292 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Gantt Roadmap?

mohitagw15856 (a GitHub user) maintains it in mohitagw15856/pm-claude-skills, which has 1,434 GitHub stars. The repository holds 1,348 skills in this directory. The repository was last updated on October 9, 2026.

Source: mohitagw15856/pm-claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.