state-machine-diagramming

Model business object lifecycles with states, transitions, guards, and invariants.

1|Updated Nov 29, 2025

Search Tags:#workflow #diagramming #diagrams #transitions #guards #state-machine #domain-model

Ready to run

npx skills add https://github.com/SSiertsema/claude-code-plugins --skill state-machine-diagramming

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: state-machine-diagramming
Source: https://github.com/SSiertsema/claude-code-plugins/tree/main/state-machine-diagramming/skills/state-machine-diagramming
Command: npx skills add https://github.com/SSiertsema/claude-code-plugins --skill state-machine-diagramming

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

State-machine diagramming captures and communicates domain lifecycles by defining states, transitions with triggers + guards + effects, and invariants to ensure correct progression of domain entities.

Core Features & Use Cases

Define domain lifecycle states with invariants that hold while the entity remains in a state.
Model transitions with explicit triggers, optional guards, and effects that happen during transitions.
Support hierarchical or parallel structures for complex domain models and generate diagrams for documentation.

Quick Start

Define a domain entity, enumerate its lifecycle states, and specify transitions with triggers, guards, and effects to generate a complete state machine diagram.

Frequently Asked Questions about state-machine-diagramming

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I model domain lifecycles with state machines for business objects?▼

You model domain lifecycles by defining states, transitions with triggers, guards, and effects, and invariants to ensure correct progression. This generates a formal, machine-readable state machine diagram that captures the complete lifecycle of business objects like orders or subscriptions.

What is state machine diagramming used for in software engineering?▼

State machine diagramming is used to capture and communicate domain lifecycles by explicitly defining states, transitions, and invariants. It ensures correct progression of domain entities by encoding triggers, guards, and effects into a formal, machine-readable diagram for documentation.

Can I model hierarchical or parallel states for complex domain models?▼

Yes, state machine diagramming supports hierarchical or parallel structures for complex domain models. It allows you to define nested states and parallel regions while generating complete diagrams that maintain typed transitions with triggers and effects for documentation.

How do I add guards and effects to state machine transitions?▼

You add guards and effects by specifying explicit triggers on transitions, optional guard conditions, and effects that execute during transitions. This typed transition model ensures invariants hold while the entity remains in a state and validates correct lifecycle progression.

Does state machine diagramming support generating diagrams for documentation?▼

Yes, state machine diagramming generates diagrams for documentation by encoding states, typed transitions, and invariants into a formal, machine-readable format. It satisfies robust diagramming workflow requirements including explicit initial and terminal states and support for hierarchical structures.

When do I need a state machine diagram for my domain model?▼

You need a state machine diagram when your domain model has entities with explicit lifecycle states and transitions that must be formally defined. It applies to objects like orders, users, subscriptions, or documents where correct progression and invariants must be communicated and documented.