Ask your coding agent to diagram your architecture, security model, API flow, or codebase. Get valid Mermaid output in seconds — no diagramming apps, no context switching, no stale wikis.
13 specialised tools · Mermaid output · 5 free diagrams to try
Generic AI tools produce plain boxes and arrows. UML Forge tools are prompt-engineered for each domain — detecting DDD patterns, generating failure paths, mapping security zones. Click any diagram to enlarge.
Add one JSON block to your editor config with your API key. Works in Claude Code, Cursor, Windsurf, and Cline.
Say "generate a class diagram for this service" or "create a threat model for my API". Your agent calls the right tool automatically.
UML Forge returns valid Mermaid syntax — renderable in VS Code, GitHub, Notion, Confluence, and any Markdown preview.
Call a tool from your coding agent, get a professional diagram without leaving your editor. No browser tabs, no diagramming apps, no copy-paste.
Diagrams generated from your actual code and system descriptions stay accurate as your system evolves. Reverse-engineer at any time.
Produce STRIDE threat models, DFDs, and trust boundary maps whenever your architecture changes — not just at audit time.
Generate comprehensive onboarding packages and stakeholder diagrams that communicate your system to any audience, at any level.
Every tool is a specialised AI prompt engineered for its domain — not a generic “draw a diagram” command.
Point at any codebase — modern or legacy — and get class, sequence, and state diagrams instantly. Works with Python, TypeScript, Java, Go, and legacy languages including COBOL, Fortran, Ada, and RPG. The first step in any modernisation project.
STRIDE analysis, data-flow diagrams with sensitivity labels, and trust boundary mapping — compliance-ready in seconds.
C4 context, container, and component diagrams tailored to your audience — from board-level to backend engineer.
Microservice interaction diagrams with failure paths and SLA markers. Plan integrations before writing a line of code.
System walkthroughs and architecture summaries that get new engineers productive in days, not weeks.
Multi-agent orchestration diagrams with tool calls and handoff flows — purpose-built for modern AI systems.
+ State machines, event-driven systems, frontend components, ERD & schema, deployment diagrams, and more.
Before generating, UML Forge asks 3–5 targeted questions about your system. Your answers produce significantly more accurate, domain-specific diagrams that reflect how your system actually works — not just how it sounds on paper. The difference is most visible on complex systems where generic prompts produce generic results.
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5 free diagrams every month. No credit card. Works in your editor in under 2 minutes.
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