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Dg Preview

Community
FReptar0
dg-preview

Preview generated Stitch screens. Use when the user says "show me the page", "what does it look like", or wants to see a screenshot of a screen they generated. Displays screen images inline or opens HTML files in the browser.

Overview

PublisherFReptar0
Repositorydesign-guard
Skill namedg-preview
Stars
12
Forks
4
Bundled files
Instructions only
LicenseMIT
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 FReptar0 on GitHub. Read the source before you install it.

Installation

Install the Dg Preview 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/FReptar0/design-guard/tree/main/.claude/skills/dg-preview
  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/FReptar0/design-guard.git /tmp/design-guard
mkdir -p .claude/skills
cp -r /tmp/design-guard/.claude/skills/dg-preview .claude/skills/dg-preview
Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Dg Preview 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 Dg Preview 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 Dg Preview 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.

Preview generated Stitch screens.

Instructions

  1. Check for screens in the screens/ directory. If none exist, tell the user to run /dg-generate first.

  2. If a screen name was provided as argument, find the matching .html file in screens/.

  3. If no argument, list available screens and ask the user which one to preview.

  4. Get the screen image by calling mcp__stitch__get_screen_image with the project ID and screen ID from .guardrc.json. This returns a base64-encoded PNG.

  5. Display the image inline so the user can see the screen preview directly in the conversation.

  6. Also mention that the user can open the HTML file in their browser: "You can also open screens/{name}.html in your browser for a full interactive preview."

  7. Next step: "Refine with /dg-generate or build with /dg-build"

Frequently asked questions

What does the Dg Preview AI skill do?

Preview generated Stitch screens. Use when the user says "show me the page", "what does it look like", or wants to see a screenshot of a screen they generated. Displays screen images inline or opens HTML files in the browser.

Why use Dg Preview on TypingMind?

Because you install it once and use it with any model. Dg Preview 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 Dg Preview in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/FReptar0/design-guard/tree/main/.claude/skills/dg-preview. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Dg Preview?

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 Dg Preview?

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

Is the Dg Preview AI skill free?

Yes. It is published on GitHub by FReptar0 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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