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xstate-machine-modeling

Model XState v5 state machines using a systematic five-step process.

Updated Feb 12, 2026
Search Tags:#typescript#javascript#modeling#state machine#xstate#finite state machine
One-click install
npx skills add https://github.com/IlyaGulya/claude-marketplace --skill xstate-machine-modeling
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: xstate-machine-modeling
Source: https://github.com/IlyaGulya/claude-marketplace/tree/main/plugins/xstate/skills/xstate-machine-modeling
Command: npx skills add https://github.com/IlyaGulya/claude-marketplace --skill xstate-machine-modeling

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps users design and model XState v5 state machines from scratch, addressing the complexity of defining states, events, context, actions, and actors.

Core Features & Use Cases

  • Systematic Modeling Process: Guides users through 5 steps: listing events, tasks, dividing tasks into actions/actors, defining initial state, and building states iteratively.
  • State vs. Context Decision Making: Provides clear rules and examples for when to use finite states versus context variables.
  • Action vs. Actor Decision Making: Offers a detailed comparison table and code examples to differentiate between actions and actors.
  • Event Design: Recommends using dot-notation for namespacing events for better organization and wildcard transitions.
  • State Naming Conventions: Advises on naming states based on the machine's current activity rather than past events.
  • Anti-Patterns: Highlights common mistakes like using boolean flags instead of states, missing error states, and over-modeling.
  • Complete Example: Includes a fully modeled data fetcher machine.

Quick Start

Use the xstate-machine-modeling skill to learn how to design an XState v5 state machine for a user authentication flow.

Frequently Asked Questions about xstate-machine-modeling

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

FAQPage Schema
How do I design an XState v5 state machine from scratch?▼

To design an XState v5 state machine, follow a systematic process: list events, identify tasks, divide tasks into actions or actors, define the initial state, and build states iteratively to model logic.

When should I use finite states versus context variables in XState?▼

Use finite states for distinct modes of operation and context variables for extended data. This distinction prevents over-modeling and avoids common anti-patterns like using boolean flags instead of proper states.

What is the difference between actions and actors in XState v5?▼

Actions handle synchronous side-effects within state transitions, while actors manage asynchronous operations and external communication. Choosing between them depends on whether the task is immediate or requires ongoing interaction.

How do I name events and states when modeling finite state machines?▼

Name events using dot-notation for namespacing and wildcard transitions. Name states based on the machine's current activity rather than past events to ensure clear, maintainable state logic.

What are common XState anti-patterns to avoid?▼

Common XState anti-patterns include using boolean flags instead of explicit states, omitting error states, and over-modeling complex logic. Avoid these to maintain clear, maintainable finite state machines.

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