VisualSpec

Name: VisualSpec
Author: utkarshx27

by utkarshx27version 0.1.0i★ –iRuns on your computer

Registry nameio.github.utkarshx27/visualspec

Install

Overview

Description from the maker (original English)

Structured, constraint-aware visual generation and deterministic layout for AI agents

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other
You need to fill in: OPENAI_API_KEY, GEMINI_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: OPENAI_API_KEY, GEMINI_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "visualspec": {
      "command": "npx",
      "args": [
        "-y",
        "@utkarshx27/visualspec"
      ],
      "env": {
        "OPENAI_API_KEY": "your-value",
        "GEMINI_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add visualspec --env OPENAI_API_KEY=your-value --env GEMINI_API_KEY=your-value -- npx -y @utkarshx27/visualspec

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "visualspec": {
      "command": "npx",
      "args": [
        "-y",
        "@utkarshx27/visualspec"
      ],
      "env": {
        "OPENAI_API_KEY": "your-value",
        "GEMINI_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "visualspec": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@utkarshx27/visualspec"
      ],
      "env": {
        "OPENAI_API_KEY": "your-value",
        "GEMINI_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

OPENAI_API_KEY secret env
Optional API key for OpenAI image generation
GEMINI_API_KEY secret env
Optional API key for Google Gemini image generation

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account utkarshx27, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32558 servers in this category
Published to the registry more recently than 40% of the other 32558 servers in this category
Basic checks equal to or better than 100% of the other 32558 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is VisualSpec safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: OPENAI_API_KEY, GEMINI_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, FactLot

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

VisualSpec

Deterministic visual generation for AI agents.

AI creates the imagery. VisualSpec guarantees the typography and layout.

# Instant workspace setup (no clone required)

npx @utkarshx27/visualspec init

Launch local MCP Server for Cursor, Claude Desktop, or Antigravity

npx @utkarshx27/visualspec mcp

The Core Problem

Most image-generation workflows fail for social and marketing graphics because a single natural-language prompt is expected to handle too many concerns at once:

subject & background
exact typography & wording
platform dimensions & safe margins
visual hierarchy & negative space
brand color rules & constraints

Image models frequently hallucinate gibberish text, truncate words, or disregard composition rules.

The Solution: Layer Separation

VisualSpec separates generative concerns from deterministic concerns:

Generative Layers (AI Models): Photography, 3D subjects, atmospheric backgrounds, textures, lighting.
Deterministic Layers (Code & SVG Engine): Exact headlines, subtitles, badges, logos, metrics, safe margins, and layout rules.
Structured Visual Spec: A machine-readable YAML specification that acts as the single contract.
Visual QA & Targeted Repair: Verifies geometry, margins, and exact copy invariants, synthesizing localized repairs without regenerating entire scenes.

User Brief / Intent

│ ▼ Visual Spec (spec.yaml) │ ┌───┴──────────────┐ ▼ ▼ Platform Pack Template Pack │ │ └───┬──────────────┘ ▼ Spec Resolver │ ┌───┴───────────────────────┐ ▼ ▼ Model Adapter Deterministic Layout (Generative Base) (SVG Typography / Overlay) │ │ └───┬───────────────────────┘ ▼ Compositor (Sharp) │ ▼ Visual QA (Constraints, Safe Margins, Exact Copy) │ ├── PASS ──► Final Asset Bundle │ └── FAIL ──► Targeted Repair Planner

Documentation

Architecture & Design Principles
VisualSpec Schema & Contract
MCP Server Setup (Cursor, Claude, Antigravity)
Adding a New Image Model Provider
Contributing Guidelines

Quickstart

Instant Run (No Install Required)

# Initialize a new VisualSpec workspace

npx @utkarshx27/visualspec init

Launch local MCP Server for Cursor, Claude, or Antigravity IDE

npx @utkarshx27/visualspec mcp

Or Install Globally

npm install -g @utkarshx27/visualspec

Use CLI commands directly

visual init visual mcp

Or Build from Source

git clone https://github.com/utkarshx27/visualspec.git

cd visualspec npm install npm run build

1. Initialize a Project

npx @utkarshx27/visualspec init

2. Validate a Visual Spec

npx @utkarshx27/visualspec validate examples/product-launch/spec.yaml

3. Inspect the Compiled Generation Prompt

npx @utkarshx27/visualspec compile examples/product-launch/spec.yaml --provider openai

4. Deterministic Render (No API Key Required)

Render layout, typography, and background styling locally:

npx @utkarshx27/visualspec render examples/product-launch/spec.yaml --output ./output/demo-launch

5. Run the Full Generation Pipeline

npx @utkarshx27/visualspec generate examples/product-launch/spec.yaml --provider mock --output ./output/demo-launch

6. Verify Asset Quality with Visual QA

npx @utkarshx27/visualspec check ./output/demo-launch/final.png --spec examples/product-launch/spec.yaml

Model Context Protocol (MCP) Server

VisualSpec runs as a native MCP server over stdio, enabling AI coding assistants (Cursor, Claude Code, Gemini CLI, and Antigravity IDE) to invoke visual tools directly:

# Launch MCP server over stdio

npx @utkarshx27/visualspec mcp

Or if installed globally

visual mcp

Available MCP Tools

visual_brief_to_spec: Convert natural language requests into valid VisualSpec YAML.
visual_validate_spec: Schema validation for specs.
visual_render: Deterministic layout & typography rendering (zero API key).
visual_generate: Full image model adapter + deterministic text overlay pipeline.
visual_check_qa: Inspect safe margins, line counts, dimensions, and invariants.
visual_repair: Automated diagnosis and localized typography/layout repair.
visual_list_resources: List supported platform packs and templates.

See the MCP Setup Guide for Cursor, Claude Desktop, and Antigravity IDE configuration snippets.

Output Bundle

Every generation creates a complete, reproducible debug bundle:

output/demo-launch/

├── final.png # Platform-ready asset ├── visual-spec.yaml # Original input specification ├── resolved-spec.yaml # Full spec with platform & template rules applied ├── generation-request.json # Exact prompt and negative parameters sent to model ├── qa-report.json # Deterministic and constraint QA verification results └── metadata.json # Execution timestamps and file index

Supported Platforms & Templates

Platforms

Instagram: Feed portrait (1080x1350, 4:5), Square (1080x1080, 1:1), Story (1080x1920, 9:16).
LinkedIn: Feed portrait (1080x1350), Square (1080x1080), Banner (1200x628).
Generic Social: Universal 1:1, 4:5, and 16:9 social formats.

Templates

Product Launch: High-impact headline, feature pill, product visual region, supporting subhead.
Quote Card: Center-focused editorial quote, author attribution, minimal atmospheric glow.
Stat Card: Large numeric hero metric, descriptive label, and data context notes.

Agent Skills

The framework includes 10 standardized skill definitions located in ./skills/:

using-visualspec: Master workflow instructions.
visual-brief: Brief extraction and analysis.
visual-spec: YAML authoring and schema rules.
composition: Spatial hierarchy and negative space allocation.
typography: Font family classing and line budgeting.
strict-constraints: Invariant taxonomy and forbidden parameters.
social-instagram: Instagram-specific design reasoning.
social-linkedin: LinkedIn-specific design reasoning.
visual-qa: Automated inspection and validation.
visual-repair: Localized diagnosis and patch generation.

Roadmap & Open Contributions

We welcome contributions! Key areas to build together:

Additional Platforms: X/Twitter (Header, Post), YouTube Thumbnails, Pinterest, TikTok Cover.
Additional Templates: Testimonial, Product Comparison, Event Announcement, Feature List.
Additional Image Model Adapters: Flux, Stable Diffusion / ComfyUI, Midjourney API.
Brand Packs: Multi-brand palette overrides, custom font loading, logo clear space rules.
Visual Studio: Local web playground / viewer for real-time spec inspection and margin toggling.

Contributing

Contributions are welcome! Please check our:

Contributing Guidelines
Code of Conduct

Testing

Run the automated test suite:

npm test

All 28 tests run offline without requiring any third-party API keys.

License

Licensed under the Apache License, Version 2.0.

VisualSpec

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

FactLot

README from the maker

VisualSpec

Launch local MCP Server for Cursor, Claude Desktop, or Antigravity

The Core Problem

The Solution: Layer Separation

Documentation

Quickstart

Instant Run (No Install Required)

Launch local MCP Server for Cursor, Claude, or Antigravity IDE

Or Install Globally

Use CLI commands directly

Or Build from Source

1. Initialize a Project

2. Validate a Visual Spec

3. Inspect the Compiled Generation Prompt

4. Deterministic Render (No API Key Required)

5. Run the Full Generation Pipeline

6. Verify Asset Quality with Visual QA

Model Context Protocol (MCP) Server

Or if installed globally

Available MCP Tools

Output Bundle

Supported Platforms & Templates

Platforms

Templates

Agent Skills

Roadmap & Open Contributions

Contributing

Testing

License