Timeline Builder

CommunityPopular

zebbern

timeline-builder

Generate beautiful interactive timeline HTML pages from JSON data, with vertical, horizontal, or dual-side layouts, collapsible details, and custom colors. Ideal for project milestones, company histories, or resumes. Triggered when a user mentions 'timeline', 'history of events', 'project milestones', 'release log', or asks to visualize a chronological sequence of data.

Overview

Publisher	zebbern
Repository	`claude-code-guide`
Skill name	`timeline-builder`
Stars	4.7K
Forks	470
Bundled files	1
License	MIT
Links	Skill source Repository

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
1 bundled files
Scripts, templates, and references the model can read while it works. Files are read-only and never executed.
Open source
Published by zebbern on GitHub. Read the source before you install it.

Installation

Install the Timeline Builder AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/zebbern/claude-code-guide/tree/main/skills/timeline-builder
Enable the skill in any chat where you want it available.

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/zebbern/claude-code-guide.git /tmp/claude-code-guide
mkdir -p .claude/skills
cp -r /tmp/claude-code-guide/skills/timeline-builder .claude/skills/timeline-builder

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Timeline Builder in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Timeline Builder on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Timeline Builder is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Timeline Builder

Generate beautiful interactive timeline HTML pages from JSON configuration data, with three layout modes:

Vertical layout (vertical) — A classic top-to-bottom timeline with event cards alternating on either side of the axis
Horizontal layout (horizontal) — A horizontally scrollable timeline, best for displaying fewer events
Dual-side layout (dual-side) — Events are placed on the left or right based on the side field, great for side-by-side comparisons

All layouts support:

Click to expand/collapse event details
Mobile-friendly responsive design
Custom theme colors, icons, and category labels
Pure static HTML with zero dependencies — opens directly in any browser

Usage

Basic: Generate from a JSON config file

bash
python3 scripts/generate_timeline.py --config timeline_data.json --output timeline.html

Read JSON from stdin

bash
cat timeline_data.json | python3 scripts/generate_timeline.py --stdin --output timeline.html

Override layout mode (takes precedence over config file)

bash
python3 scripts/generate_timeline.py --config data.json --layout horizontal --output timeline.html

JSON Configuration Format

json
{
  "title": "Project Milestones",
  "layout": "vertical",
  "theme": {
    "primaryColor": "#2563eb",
    "secondaryColor": "#7c3aed",
    "backgroundColor": "#ffffff",
    "textColor": "#1f2937",
    "lineColor": "#d1d5db",
    "fontFamily": "system-ui, -apple-system, sans-serif"
  },
  "events": [
    {
      "date": "2024-01-15",
      "title": "Project Kickoff",
      "summary": "Approval completed, core team assembled",
      "details": "Detailed description text, shown when the card is expanded...",
      "icon": "🚀",
      "category": "Milestone",
      "color": "#10b981",
      "side": "left"
    }
  ]
}

CLI Arguments

Argument	Description
`--config, -c`	Path to the JSON config file (mutually exclusive with `--stdin`)
`--stdin`	Read JSON from standard input
`--output, -o`	Output HTML file path (defaults to stdout)
`--layout, -l`	Override layout mode: `vertical`, `horizontal`, `dual-side`
`--title, -t`	Override the timeline title

Event Fields

Field	Required	Description
`date`	Yes	Date label — any format works (e.g. `2024-01`, `Q1 2024`, `Phase One`)
`title`	Yes	Event title
`summary`	No	Short description, always visible on the card
`details`	No	Detailed content, revealed on click
`icon`	No	Emoji or single-character icon (defaults to `●`)
`category`	No	Category tag displayed on the card
`color`	No	Event node color (overrides the theme color)
`side`	No	Only for dual-side layout: `left` or `right`

Use Cases

Project milestone displays
Product release histories
Company growth timelines
Personal resume timelines
Course syllabus outlines
Any scenario requiring chronological information display

Dependencies

Python 3.6+ (standard library only — no extra packages required)

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

scripts/generate_timeline.py17 KB

Frequently asked questions

What does the Timeline Builder AI skill do?

Why use Timeline Builder on TypingMind?

Because you install it once and use it with any model. Timeline Builder is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Timeline Builder in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/zebbern/claude-code-guide/tree/main/skills/timeline-builder. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Timeline Builder?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Timeline Builder?

As many as you like. As long as a model supports skills, you can use Timeline Builder with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Timeline Builder AI skill free?

Yes. It is published on GitHub by zebbern under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Timeline Builder

Usage

Basic: Generate from a JSON config file

Read JSON from stdin

Override layout mode (takes precedence over config file)

JSON Configuration Format

CLI Arguments

Event Fields

Use Cases

Dependencies

Bundled files

Frequently asked questions

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