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Write Design Doc

OrganizationPopular
videojs
write-design-doc

Write or update a Video.js architecture, feature, or decision record only when the user explicitly requests that record. Use for compact, non-inferable rationale outside UI component design.

Overview

Publishervideojs
Repositoryv10
Skill namewrite-design-doc
Stars
1K
Forks
93
Bundled files
Instructions only
Links
Skill sourceRepositoryHomepage
  • 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.

  • Self-contained

    Everything the model needs lives in the instructions — no extra files to sync.

  • Open source

    Published by videojs on GitHub. Read the source before you install it.

Installation

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

1

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.

  1. Open the app and go to Plugins → Skills.
  2. Choose "Install from GitHub".
  3. Paste the skill folder URL below and confirm.
    https://github.com/videojs/v10/tree/main/.agents/skills/write-design-doc
  4. 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.
2

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/videojs/v10.git /tmp/v10
mkdir -p .claude/skills
cp -r /tmp/v10/.agents/skills/write-design-doc .claude/skills/write-design-doc
Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Write Design Doc 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 Write Design Doc 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 Write Design Doc 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.

Internal records

Read internal/design/README.md and internal/decisions/README.md; they define current placement, status, and format.

Workflow

  1. Confirm that the user explicitly requested creation or revision of the record. Do not invoke this skill merely because a design decision exists.
  2. Use the requested artifact and path when given; otherwise choose the smallest matching design or decision location.
  3. Read the relevant code, tests, history, and existing record. Treat executable sources as current behavior.
  4. State the decision directly, then preserve only the important rationale, constraint, or trade-off that cannot be inferred from those sources.
  5. Link source, tests, or related records instead of copying APIs, schemas, state flow, file inventories, or mechanics.
  6. Include alternatives or consequences only when they materially explain the choice. Omit empty headings and speculative detail.

Keep the result to a few paragraphs when possible. Do not create adjacent records, split one record into several, or turn it into an RFC without a separate explicit request.

Example

Input: “Record why source selection belongs in the core player.”

Output: A compact decision and the non-inferable reason it should survive outside the code, with source links where useful.

Frequently asked questions

What does the Write Design Doc AI skill do?

Write or update a Video.js architecture, feature, or decision record only when the user explicitly requests that record. Use for compact, non-inferable rationale outside UI component design.

Why use Write Design Doc on TypingMind?

Because you install it once and use it with any model. Write Design Doc 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 Write Design Doc in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/videojs/v10/tree/main/.agents/skills/write-design-doc. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Write Design Doc?

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 Write Design Doc?

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

Is the Write Design Doc AI skill free?

It is published on GitHub by videojs. Check the repository for licensing terms. 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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