Is io.github.RedHold/diagrams-so-mcp safe to use?

io.github.RedHold/diagrams-so-mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under Apache-2.0.

How do I install io.github.RedHold/diagrams-so-mcp?

io.github.RedHold/diagrams-so-mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What can io.github.RedHold/diagrams-so-mcp do?

io.github.RedHold/diagrams-so-mcp provides 4 tools: CLI, Environment, Smithery, Notes. See the full tools list on the server page for descriptions and parameters.

What AI clients work with io.github.RedHold/diagrams-so-mcp?

io.github.RedHold/diagrams-so-mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.

Is io.github.RedHold/diagrams-so-mcp actively maintained?

io.github.RedHold/diagrams-so-mcp is actively maintained — last commit was 4 days ago.

io.github.RedHold/diagrams-so-mcp

@diagrams-so/mcp

Generate and edit AWS, Azure, GCP and Kubernetes architecture diagrams as editable draw.io files.

412/wk 4 tools GitHub npm

No known CVEs

Apache-2.0 license

Actively maintained

Last commit 4d ago

Works with most clients

Transport: stdio, sse, http

4 tools · ~123 tok

Grade A · 0.1% of 200K ctx

MCPpedia last refreshed this data 8h ago

Edit this pageView history

io.github.RedHold/diagrams-so-mcp is an MCP server that generate and edit AWS, Azure, GCP and Kubernetes architecture diagrams as editable draw.io files. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 87/100 on MCPpedia's security, maintenance and efficiency rubric.

Cloud

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "io-github-redhold-diagrams-so-mcp": {
      "args": [
        "-y",
        "@diagrams-so/mcp"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-redhold-diagrams-so-mcp)](https://mcppedia.org/s/io-github-redhold-diagrams-so-mcp)

Read me

What io.github.RedHold/diagrams-so-mcp does

The Diagrams.so MCP server — generate, edit, and manage cloud architecture diagrams from any MCP client (Claude Desktop, Claude Code, Cursor). It's a thin stdio client over the public Diagrams.so API (/api/v2); every tool is one REST call.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y '@diagrams-so/mcp' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

87/100across 5 weighted dimensions

How we score →

0255075100

−13

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked @diagrams-so/mcp against OSV.dev.

Inventory

Tools (4)

Click any tool to inspect its schema.

~123 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.RedHold/diagrams-so-mcp safe to use?: io.github.RedHold/diagrams-so-mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under Apache-2.0.
How do I install io.github.RedHold/diagrams-so-mcp?: io.github.RedHold/diagrams-so-mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can io.github.RedHold/diagrams-so-mcp do?: io.github.RedHold/diagrams-so-mcp provides 4 tools: CLI, Environment, Smithery, Notes. See the full tools list on the server page for descriptions and parameters.
What AI clients work with io.github.RedHold/diagrams-so-mcp?: io.github.RedHold/diagrams-so-mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is io.github.RedHold/diagrams-so-mcp actively maintained?: io.github.RedHold/diagrams-so-mcp is actively maintained — last commit was 4 days ago.

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Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Edit this pageView history

Cloud

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "io-github-redhold-diagrams-so-mcp": {
      "args": [
        "-y",
        "@diagrams-so/mcp"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-redhold-diagrams-so-mcp)](https://mcppedia.org/s/io-github-redhold-diagrams-so-mcp)

Read me

What io.github.RedHold/diagrams-so-mcp does

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y '@diagrams-so/mcp' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

@diagrams-so/mcp

The Diagrams.so MCP server — generate, edit, and manage cloud architecture diagrams from any MCP client (Claude Desktop, Claude Code, Cursor). It's a thin stdio client over the public Diagrams.so API (/api/v2); every tool is one REST call.

Quick start

Needs Node ≥ 18. No API key to copy: you connect by approving in a browser.

# 1. add the server to Claude Code
claude mcp add diagrams-so -- npx -y @diagrams-so/mcp

# 2. connect this machine (a browser opens, press Approve)
npx @diagrams-so/mcp login

Restart your client, then ask: "Generate an AWS 3-tier web app diagram and show me the warnings." Run /mcp if you want to confirm all 23 tools registered first.

Using it a lot? Install once and the command gets shorter:

npm i -g @diagrams-so/mcp
diagrams-so login

The server talks to production (https://api.diagrams.so/api/v2) by default. Point it at a local or self-hosted API with DIAGRAMS_API_BASE.

Using Claude Desktop or Cursor instead of the CLI? See Add it to your MCP client. Prefer a one-click, no-terminal install? See One-click install (MCPB).

No terminal at all (Claude Desktop)

Add the server to your client config (below) with DIAGRAMS_LOGIN_EMAIL set to your email, then just ask for a diagram. Because the machine isn't connected yet, the first tool call emails you a one-time sign-in code and replies with a link. Open it, enter the code, press Approve, and ask again. Nothing to install or type.

Generating a diagram from Claude

login only connects the machine. It never generates anything itself, so there is no generate command to type in a terminal. You write the prompt in your assistant's normal chat box and it calls the tools for you.

Client	Where you type the prompt
Claude Code	the terminal chat, same place you ask anything else
Claude Desktop	the normal message box
Cursor	the chat or composer panel

MCP servers load at startup, so restart your client after adding it. Then run /mcp and confirm diagrams-so shows 23 tools.

Now just ask, in plain English:

Generate an AWS three-tier web app with an ALB, EC2 Auto Scaling and RDS Multi-AZ. Show me the design warnings, then export it as draw.io.

Behind that one sentence the assistant calls generate_diagram, then get_warnings, then export_diagram. You never name a tool or write JSON.

More things worth asking, once you have a diagram:

The warnings mention no encryption in transit. Fix that one and show me the new score.

Add a CloudFront distribution in front of the ALB.

Re-export it as SVG so I can drop it in the README.

Each reply carries the credit cost and your remaining balance. Generating, editing, fixing and re-laying-out spend credits; reading, warnings and every export are free.

The .drawio file the assistant saves opens at app.diagrams.net or in the desktop app, fully editable — it is real draw.io XML, not a picture.

Prefer not to use an assistant at all? diagrams.so/create has the same thing as a web page: type the prompt in the box. No install, no login, no MCP.

Tools (23)

Create & change (mutating)

Tool	What it does	Cost
`generate_diagram`	Create a diagram from a prompt → id + draw.io XML + warnings + score	credits
`edit_diagram`	Apply a natural-language change (new version)	credits
`fix_warning`	Resolve one Well-Architected warning	credits
`relayout_diagram`	AI re-arrange the layout (async; first

... View full README on GitHub

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

87/100across 5 weighted dimensions

How we score →

0255075100

−13

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked @diagrams-so/mcp against OSV.dev.

Inventory

Tools (4)

Click any tool to inspect its schema.

~123 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.RedHold/diagrams-so-mcp safe to use?: io.github.RedHold/diagrams-so-mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under Apache-2.0.
How do I install io.github.RedHold/diagrams-so-mcp?: io.github.RedHold/diagrams-so-mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can io.github.RedHold/diagrams-so-mcp do?: io.github.RedHold/diagrams-so-mcp provides 4 tools: CLI, Environment, Smithery, Notes. See the full tools list on the server page for descriptions and parameters.
What AI clients work with io.github.RedHold/diagrams-so-mcp?: io.github.RedHold/diagrams-so-mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is io.github.RedHold/diagrams-so-mcp actively maintained?: io.github.RedHold/diagrams-so-mcp is actively maintained — last commit was 4 days ago.