sysketch

Name: sysketch
Author: Tonys-Coding

by Tonys-Codingversion 0.5.0i★ –iComputer or cloud

Registry nameio.github.Tonys-Coding/sysketch

Install

Overview

Description from the maker (original English)

Polished system design diagrams (SVG/PNG) from a tiny YAML spec, ~18x fewer tokens than raw SVG.

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: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Design, images & audio

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet
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 …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://sysketch.vercel.app/mcp

Or run it on your computer

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

{
  "mcpServers": {
    "sysketch": {
      "command": "npx",
      "args": [
        "-y",
        "sysketch-mcp"
      ]
    }
  }
}

Run this in your terminal

claude mcp add --transport http sysketch https://sysketch.vercel.app/mcp

Or run it on your computer

claude mcp add sysketch -- npx -y sysketch-mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "sysketch": {
      "url": "https://sysketch.vercel.app/mcp"
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "sysketch": {
      "command": "npx",
      "args": [
        "-y",
        "sysketch-mcp"
      ]
    }
  }
}

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": {
    "sysketch": {
      "type": "http",
      "url": "https://sysketch.vercel.app/mcp"
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "sysketch": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "sysketch-mcp"
      ]
    }
  }
}

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.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://sysketch.vercel.app/mcp

Menu names can differ slightly by plan and over time.

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

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

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

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 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account Tonys-Coding, 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 checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Design, images & audioi

More stars than 0% of the other 2164 servers in this category
Published to the registry more recently than 60% of the other 2164 servers in this category
Basic checks equal to or better than 100% of the other 2164 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 sysketch 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?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.5.0) reached the registry 20 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Figma Context MCP, Claude Real Video, Figma MCP Server

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Figma Context MCP

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Give your coding agent access to your Figma data. Implement designs in any framework in one-shot.

Runs on your computer★ 16,165MITUpdated 5 months ago

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Claude Real Video

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Figma MCP Server

by figma

Figma’s official server gives AI your design data so it can turn designs into code or describe them accurately. Connects to Figma’s cloud.

Runs in the cloud★ 2,152Updated 13 months ago

Install

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.

sysketch-mcp

Lets Claude, Cursor and other AI assistants draw clean, hand-sketched system design diagrams with sysketch. The assistant writes a short description of your system instead of drawing the image itself, which makes diagrams faster, cheaper and consistent.

Setup

You need Node.js 20 or newer.

Claude Code: run once in your terminal:

claude mcp add sysketch -- npx -y sysketch-mcp

Claude Desktop, Cursor and other assistants: add this to the assistant's MCP settings, then restart it:

"mcpServers": { "sysketch": { "command": "npx", "args": ["-y", "sysketch-mcp"] } } }

Diagrams are saved in the folder your assistant runs the server in (your project, in Claude Code and Cursor). Claude Desktop starts servers outside any project, so there they go to a sysketch folder in your home folder. To choose a folder, add "--dir", "/path/to/folder" to args, or set the SYSKETCH_DIR environment variable.

ChatGPT, Claude on the web, Perplexity and other AI chats: you don't need this package. Add https://sysketch.vercel.app/mcp as a custom connector instead (details).

Use

Ask your assistant, for example:

Use sysketch to draw a ride-sharing system as a PNG.

The diagram is saved in diagrams/ inside that folder, together with its description, so you can ask for changes later: "add a notification service", "use the blueprint theme". Only a one-line summary comes back into the conversation, never the image data.

Measured with Claude Code (Sonnet) on 5 system design requests: 4,352 output tokens with sysketch vs 77,518 when the assistant drew the SVG itself, about 18x fewer (benchmark).

Tools

Tool	What it does
`render_diagram`	Draws a diagram from a description (`spec`) or a file (`file`) to `.svg` or `.png`, with an optional `theme`. `preview: true` returns the image to the assistant (off by default).
`list_icons`	Lists the icons and recognized names; `logos` searches installed official logos.

The tool definitions add about 450 tokens to each session.

Official logos (optional)

When official logos are installed, product names like s3 or stripe show the real logo. See the logos guide.

More examples, themes and the full spec: [github.com/Tonys-Coding/sysketch](https://github.com/Tonys-Coding/sysketch)

MIT License.

sysketch

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Or run it on your computer

Or run it on your computer

Or run it on your computer

Or run it on your computer

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 Design, images & audioi

Common questions

Alternatives

Figma Context MCP

Claude Real Video

Figma MCP Server

README from the maker

sysketch-mcp

Setup

Use

Tools

Official logos (optional)