UML Forge

Architecture intelligence, security analysis, and living docs. 13 Mermaid tools.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

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Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "uml-forge-2": {
      "command": "uvx",
      "args": [
        "umlforge"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

UML Forge MCP Connector

Architecture intelligence, security analysis, and living documentation — inside your coding agent.

UML Forge gives Claude Code, Cursor, Windsurf, and any MCP-compatible coding agent a suite of 14 specialised tools for producing professional UML diagrams from your codebase, schema, or architecture descriptions.

Quick start

Claude Code:

config.json

{
  "mcpServers": {
    "umlforge": {
      "command": "uvx",
      "args": ["umlforge"],
      "env": { "UMLFORGE_API_KEY": "your-api-key" }
    }
  }
}

Cursor / Windsurf — add the same block to your MCP settings.

Get your API key at umlforge.dev.

Tools included

Tool	Description
`umlforge_suggest`	Start here. Describe your goal in plain English — returns the right tool and a ready-to-run call
`umlforge_reverse_engineer`	Class, sequence, and state diagrams from a codebase or GitHub URL
`umlforge_api_sequence`	Sequence diagrams for request flows across services
`umlforge_erd_schema`	Entity-relationship diagrams from domain descriptions or SQL schemas
`umlforge_state_machine`	State diagrams from entity lifecycles and business rules
`umlforge_frontend_components`	Component hierarchy and interaction diagrams for UI features
`umlforge_deployment`	Infrastructure and CI/CD pipeline diagrams
`umlforge_threat_model`	STRIDE threat model + attack surface diagram
`umlforge_event_driven`	Event flow and pub/sub architecture diagrams
`umlforge_ai_agent`	Agent topology and tool-call flow diagrams for LLM pipelines
`umlforge_stakeholder_arch`	C4 context diagrams for investors, CTOs, and non-technical stakeholders
`umlforge_living_docs`	Update existing diagrams to reflect sprint or PR changes
`umlforge_onboarding`	Day-one knowledge-transfer package for new team members
`umlforge_legacy_migration`	Legacy structure + modern architecture diagrams and 6-phase migration roadmap from COBOL, Fortran, ABAP, RPG, and other legacy languages

All tools accept report_mode=True to generate a written analysis report alongside the diagram.

Requirements

Python 3.11+
An API key from umlforge.dev (free tier available)

License

MIT — see LICENSE.

Read the full README →View source on GitHub →

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Frequently Asked Questions about UML Forge

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "uml-forge": { "command": "npx", "args": ["-y", "UML Forge"] } }

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Technical Specs & Signals

CategoryDeveloper Tools

35Quality signal: Fair · 35/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools15/30

Adoption & activity1/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

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