Impeccable
bestofjs/bestofjs
A skill your agent uses when the user wants to design, redesign, shape, critique, audit, polish, clarify, distill, harden, optimize, adapt, animate, colorize, extract, or otherwise improve a…
Model component behaviour as explicit states, events, and transitions.
Install State Machine
$ npx skills add Owl-Listener/designer-skills --skill state-machine -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Owl-Listener/designer-skills state-machine --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Owl-Listener/designer-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/interaction-design/skills/state-machine .claude/skills/state-machine && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "state-machine" agent skill from https://github.com/Owl-Listener/designer-skills/tree/main/interaction-design/skills/state-machine into .claude/skills/state-machine/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "state-machine", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Owl-Listener/designer-skills/tree/main/interaction-design/skills/state-machineType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Owl-Listener/designer-skills --skill state-machine -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Owl-Listener/designer-skills state-machine --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Owl-Listener/designer-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/interaction-design/skills/state-machine .agents/skills/state-machine && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "state-machine" agent skill from https://github.com/Owl-Listener/designer-skills/tree/main/interaction-design/skills/state-machine into .agents/skills/state-machine/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "state-machine", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Owl-Listener/designer-skills --skill state-machine -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Owl-Listener/designer-skills state-machine --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Owl-Listener/designer-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/interaction-design/skills/state-machine .cursor/skills/state-machine && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "state-machine" agent skill from https://github.com/Owl-Listener/designer-skills/tree/main/interaction-design/skills/state-machine into .cursor/skills/state-machine/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "state-machine", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Owl-Listener/designer-skills.git --path interaction-design/skills/state-machine--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Owl-Listener/designer-skills --skill state-machine -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Owl-Listener/designer-skills state-machine --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Owl-Listener/designer-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/interaction-design/skills/state-machine .gemini/skills/state-machine && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "state-machine" agent skill from https://github.com/Owl-Listener/designer-skills/tree/main/interaction-design/skills/state-machine into .gemini/skills/state-machine/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "state-machine", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Owl-Listener/designer-skills state-machineInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Owl-Listener/designer-skills --skill state-machine -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Owl-Listener/designer-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/interaction-design/skills/state-machine .github/skills/state-machine && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "state-machine" agent skill from https://github.com/Owl-Listener/designer-skills/tree/main/interaction-design/skills/state-machine into .github/skills/state-machine/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "state-machine", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Owl-Listener/designer-skills --skill state-machine -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Owl-Listener/designer-skills state-machine --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Owl-Listener/designer-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/interaction-design/skills/state-machine .opencode/skills/state-machine && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "state-machine" agent skill from https://github.com/Owl-Listener/designer-skills/tree/main/interaction-design/skills/state-machine into .opencode/skills/state-machine/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "state-machine", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
state-machine- GitHub stars
- 2.9k
- Used in
- 1 other repo
- Token cost
- ~488 tokens
- SKILL.md length
- 223 words
- Files
- 1
- Skills in repo
- 107
- Repo updated
- First seen
- Licence
- MIT
At a glance
Model component behaviour as explicit states, events, and transitions.
- Works in 6 steps: List all possible states → List all events/triggers → Define valid transitions → …
- A component has many interacting states that must be exhaustive
- SKILL.md covers What You Do, State Machine Components, Common UI State Machines and Modeling Approach, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
State Machine is an agent skill from Owl-Listener/designer-skills. Model component behaviour as explicit states, events, and transitions. Use when a component has many interacting states that must be exhaustive. For the feel and feedback of a single interaction, use micro-interaction-spec.
Its SKILL.md is about 490 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Frontend & Design, covering Web animation and motion. The repository describes itself as: Designer Skills Collection: agentic skills, commands, and plugins for design — from research to systems, UI, interaction, and delivery. The licence is MIT.
When your agent uses it
- A component has many interacting states that must be exhaustive
- Tasks that involve Web animation and motion
Example prompts
- “/state-machine”
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- List all possible states
- List all events/triggers
- Define valid transitions
- Identify impossible states to prevent
- Add guards for conditional transitions
- Define entry/exit actions per state
What it can do on your machine
Read from SKILL.md and the folder at commit 9a6930c. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
State Machine loads about 488 tokens when it runs. Until then it costs about 60 tokens; SKILL.md has 223 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from Owl-Listener/designer-skills at commit 9a6930c, republished under its MIT licence (© Owl-Listener). 223 words, ~488 tokens.
Download SKILL.mdSave it as
.claude/skills/state-machine/SKILL.md (or your agent's skills folder).- name
- state-machine
- description
- Model component behaviour as explicit states, events, and transitions. Use when a component has many interacting states that must be exhaustive. For the feel and feedback of a single interaction, use `micro-interaction-spec`.
State Machine
You are an expert in modeling complex UI behavior as finite state machines.
What You Do
You model UI components and flows as state machines to eliminate impossible states and make behavior predictable.
State Machine Components
- States: Distinct modes the UI can be in (idle, loading, success, error)
- Events: Things that cause transitions (click, submit, timeout, response)
- Transitions: Rules for moving between states (on event X in state A, go to state B)
- Actions: Side effects during transitions (fetch data, show toast, log event)
- Guards: Conditions that must be true for a transition (isValid, hasPermission)
Common UI State Machines
Form
idle -> editing -> validating -> submitting -> success/error -> idle
Data Fetching
idle -> loading -> success/error, error -> retrying -> success/error
Authentication
logged-out -> authenticating -> logged-in -> logging-out -> logged-out
Multi-Step Wizard
step1 -> step2 -> step3 -> review -> submitting -> complete
Modeling Approach
- List all possible states
- List all events/triggers
- Define valid transitions
- Identify impossible states to prevent
- Add guards for conditional transitions
- Define entry/exit actions per state
Benefits
- Eliminates impossible states (no loading + error simultaneously)
- Makes edge cases visible
- Shared language between design and engineering
- Testable behavior specification
Best Practices
- Start with the happy path, then add error states
- Every state should have a way out (no dead ends)
- Keep state machines focused (one per concern)
- Document with visual diagrams
- Map each state to a UI representation
© Owl-Listener, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in interaction-design/skills/state-machine of Owl-Listener/designer-skills.
Open the folder on GitHubat commit 9a6930c
Used in 1 other repository
We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in Owl-Listener/designer-skills, which our catalogue first saw on October 7, 2026.
Compare with similar skills
State Machine next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| State Machine this skillOwl-Listener/designer-skills | 2.9k | 1 repos | ~488 | Automated safety check: Pass | MIT | |
| Impeccablebestofjs/bestofjs | 3.1k | 27 repos | ~2.6k | Automated safety check: Pass | MIT | |
| GSAP ScrollTriggergreensock/gsap-skills | 16k | 5 repos | ~4.6k | Automated safety check: Pass | MIT | |
| GSAP Core Animationgreensock/gsap-skills | 16k | 4 repos | ~3.7k | Automated safety check: Pass | MIT | |
| Web Animation DesignbaptisteArno/typebot.io | 11k | 2 repos | ~2.7k | Automated safety check: Pass | Custom licence | |
| Scroll World Landing Pageoso95/scroll-world | 9.8k | 1 repos | ~12k | Automated safety check: Notes | MIT |
Similar skills
GSAP ScrollTrigger
greensock/gsap-skills
Teaches an agent how to wire up GSAP's ScrollTrigger plugin for scroll-linked animation, pinned sections and scrub, including the start and end position syntax.
GSAP Core Animation
greensock/gsap-skills
Covers the GSAP core API for tweens, easing, staggers, defaults and matchMedia, and when to choose GSAP over CSS animations or other JavaScript animation libraries.
Web Animation Design
baptisteArno/typebot.io
Guides easing, timing and animation choices for UI motion, based on a web animation course, and reviews existing animations in a before-and-after table.
Scroll World Landing Page
oso95/scroll-world
Builds a scroll-driven landing page where a pre-rendered camera flies through connected AI-generated scenes, using Higgsfield for stills and video clips.
Make Interfaces Feel Better
samuelclay/NewsBlur
Design engineering principles for making interfaces feel polished.
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Related
Categories
Questions about State Machine
What does State Machine do?
Model component behaviour as explicit states, events, and transitions. State Machine is an agent skill from Owl-Listener/designer-skills. Model component behaviour as explicit states, events, and transitions.
When should I use State Machine?
State Machine fits situations like: A component has many interacting states that must be exhaustive; tasks that involve Web animation and motion.
How do I install State Machine in Claude Code?
Run `npx skills add Owl-Listener/designer-skills --skill state-machine -a claude-code`. Or copy the skill folder (interaction-design/skills/state-machine in Owl-Listener/designer-skills) into .claude/skills/state-machine in your project. Claude Code loads it when a task matches its description.
How do I install State Machine in Codex?
Run `npx skills add Owl-Listener/designer-skills --skill state-machine -a codex`. Or copy the skill folder (interaction-design/skills/state-machine in Owl-Listener/designer-skills) into .agents/skills/state-machine in your project. Codex loads it when a task matches its description.
Can I use State Machine in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Owl-Listener/designer-skills --skill state-machine -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/state-machine, .gemini/skills/state-machine, .github/skills/state-machine and .opencode/skills/state-machine in your project.
What does State Machine need to run?
SKILL.md names no scripts, command-line tools or credentials: State Machine is instructions for the agent only.
Does State Machine access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is State Machine safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does State Machine use?
State Machine is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does State Machine use?
About 488 tokens (SKILL.md is roughly 2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to State Machine?
Skills that share tags, products or a category with State Machine: Impeccable (bestofjs/bestofjs, 3.1k stars), GSAP ScrollTrigger (greensock/gsap-skills, 16k stars), GSAP Core Animation (greensock/gsap-skills, 16k stars) and Web Animation Design (baptisteArno/typebot.io, 11k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains State Machine?
Owl-Listener (a GitHub user) maintains it in Owl-Listener/designer-skills, which has 2,854 GitHub stars. The repository holds 107 skills in this directory. The repository was last updated on September 5, 2026.
Source: Owl-Listener/designer-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.