Mcp Plantuml
Generate PlantUML Diagrams as PNG/SVG with Embedded Web Viewer
Install
$ agentstack add mcp-2niuhe-mcp-plantuml ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/mcp-2niuhe-mcp-plantuml) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
plantuml_web
[](https://archestra.ai/mcp-catalog/2niuhe__plantuml_web) Using nicegui as a PlantUML frontend, you can deploy PlantUML on an intranet.
It's a nicegui demo project with an added MCP (Model Context Protocol) server that exposes PlantUML functionality to AI assistants.
Plantuml jar version: plantuml-1.2025.3.jar
Features
Web Interface
- Interactive PlantUML editor with live preview
- Save and load diagrams
- Responsive UI with resizable panels
MCP Server
- Generate PlantUML diagrams in SVG or PNG format
- Validate PlantUML code with detailed error messages
Usage:
With Docker
docker build -t plantuml_web_mcp .
# or pull from dockerhub
# docker pull 2niuhe/plantuml_web_mcp:latest
docker run -d -p 8080:8080 -p 8765:8765 plantuml_web_mcp:latestThen you can access:
- Web interface: http://127.0.0.1:8080
- MCP server: http://127.0.0.1:8765/sse
Without Docker
pip install -r requirements.txt
sh start.shThe start script will launch:
- PlantUML server on port 8000
- Web interface on port 8080
- MCP server on port 8765
Connecting to the MCP Server
You can connect to the MCP server using any MCP client, such as Claude Desktop:
- Open Claude Desktop
- Go to Settings > MCP Servers
- Add a new server with the URL:
http://localhost:8765/sse - Restart Claude Desktop
Testing the MCP Server
A test client is provided to verify the MCP server functionality:
python test_plantuml_mcp.py http://localhost:8765/sseAvailable MCP Tools
generate_plantuml_image: Generate a diagram image from PlantUML codevalidate_plantuml_syntax: Validate PlantUML code and return validation result
ref
Home · zauberzeug/nicegui Wiki
How to use nicegui for beginners？ · zauberzeug/nicegui · Discussion #1486
Nicegui example and suggestions · zauberzeug/nicegui · Discussion #1778
syejing/nicegui-reference-cn: NiceGUI 中文版本文档
(1) Use NiceGUI to watch images and do it from the COMMAND LINE! - YouTube
Source & license
This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: 2niuhe
- Source: 2niuhe/mcp_plantuml
- License: Apache-2.0
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.