Agent skill

Add Websocket Command

Add a new WebSocket command to the simulation control service.

Install Add Websocket Command

skills CLI

$ npx skills add lge-ros2/cloisim --skill add-websocket-command -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install lge-ros2/cloisim add-websocket-command --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/lge-ros2/cloisim.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.github/skills/add-websocket-command .claude/skills/add-websocket-command && rm -rf skills-src

Use ~/.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/

Paste into Claude Code

Install the "add-websocket-command" agent skill from https://github.com/lge-ros2/cloisim/tree/main/.github/skills/add-websocket-command into .claude/skills/add-websocket-command/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "add-websocket-command", 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

$skill-installer install https://github.com/lge-ros2/cloisim/tree/main/.github/skills/add-websocket-command

Type 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.

skills CLI

$ npx skills add lge-ros2/cloisim --skill add-websocket-command -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install lge-ros2/cloisim add-websocket-command --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/lge-ros2/cloisim.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.github/skills/add-websocket-command .agents/skills/add-websocket-command && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "add-websocket-command" agent skill from https://github.com/lge-ros2/cloisim/tree/main/.github/skills/add-websocket-command into .agents/skills/add-websocket-command/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "add-websocket-command", 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.

skills CLI

$ npx skills add lge-ros2/cloisim --skill add-websocket-command -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install lge-ros2/cloisim add-websocket-command --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/lge-ros2/cloisim.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.github/skills/add-websocket-command .cursor/skills/add-websocket-command && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "add-websocket-command" agent skill from https://github.com/lge-ros2/cloisim/tree/main/.github/skills/add-websocket-command into .cursor/skills/add-websocket-command/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "add-websocket-command", 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

$ gemini skills install https://github.com/lge-ros2/cloisim.git --path .github/skills/add-websocket-command

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add lge-ros2/cloisim --skill add-websocket-command -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install lge-ros2/cloisim add-websocket-command --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/lge-ros2/cloisim.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.github/skills/add-websocket-command .gemini/skills/add-websocket-command && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "add-websocket-command" agent skill from https://github.com/lge-ros2/cloisim/tree/main/.github/skills/add-websocket-command into .gemini/skills/add-websocket-command/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "add-websocket-command", 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.

GitHub CLI

$ gh skill install lge-ros2/cloisim add-websocket-command

Installs 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).

skills CLI

$ npx skills add lge-ros2/cloisim --skill add-websocket-command -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/lge-ros2/cloisim.git skills-src && mkdir -p .github/skills && cp -r skills-src/.github/skills/add-websocket-command .github/skills/add-websocket-command && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "add-websocket-command" agent skill from https://github.com/lge-ros2/cloisim/tree/main/.github/skills/add-websocket-command into .github/skills/add-websocket-command/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "add-websocket-command", 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.

skills CLI

$ npx skills add lge-ros2/cloisim --skill add-websocket-command -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install lge-ros2/cloisim add-websocket-command --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/lge-ros2/cloisim.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.github/skills/add-websocket-command .opencode/skills/add-websocket-command && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "add-websocket-command" agent skill from https://github.com/lge-ros2/cloisim/tree/main/.github/skills/add-websocket-command into .opencode/skills/add-websocket-command/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "add-websocket-command", 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: add-websocket-command
GitHub stars: 176
Token cost: ~1.1k tokens
SKILL.md length: 208 words
Files: 1
Skills in repo: 18
Repo updated: Oct 6, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Add a new WebSocket command to the simulation control service.

Works in 6 steps: Define Request/Response DTOs → Add the Command Case → Wire to Main.cs (If Needed) → …
: adding a new runtime control command
SKILL.md covers When to Use, Option A: Add Command to…, Option B: Create a New Service… and JSON Patterns, plus 1 more section
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Add Websocket Command is an agent skill from lge-ros2/cloisim. Add a new WebSocket command to the simulation control service. Use when: adding a new runtime control command, exposing simulation state via WebSocket, adding a new service endpoint.

Its SKILL.md is about 1.1k 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 Backend & APIs, covering Realtime and WebSockets. The repository describes itself as: Unity 6 based multi-robot simulator for ROS 2, SDFormat/SDF, LiDAR, camera, depth, IMU, GPS, and large-scale robotics simulation. The licence is MIT.

When your agent uses it

: adding a new runtime control command
Exposing simulation state via WebSocket
Adding a new service endpoint

Example prompts

“/add-websocket-command”

Workflow steps

6 steps, taken from the step headings in SKILL.md.

Define Request/Response DTOs
Add the Command Case
Wire to Main.cs (If Needed)
Create the Service Class
Register the Endpoint
Clean Up on Dispose

What it can do on your machine

Read from SKILL.md and the folder at commit f4c1f0b. 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 (its code samples are csharp and json).
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

Add Websocket Command loads about 1.1k tokens when it runs. Until then it costs about 51 tokens; SKILL.md has 208 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~51
When it runs · the whole SKILL.md, loaded when a task matches: ~1.1k

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 lge-ros2/cloisim at commit f4c1f0b, republished under its MIT licence (© lge-ros2). 208 words, ~1,091 tokens.

Download SKILL.mdSave it as .claude/skills/add-websocket-command/SKILL.md (or your agent's skills folder).

name: add-websocket-command
description: Add a new WebSocket command to the simulation control service. Use when: adding a new runtime control command, exposing simulation state via WebSocket, adding a new service endpoint.

Add a New WebSocket Command

Procedure for adding a new command to the SimulationControlService or creating a new WebSocket service endpoint.

When to Use

Adding a new runtime control command (e.g., pause, step, teleport)
Exposing new simulation state via the WebSocket API
Creating an entirely new WebSocket service endpoint

Option A: Add Command to Existing Service

1. Define Request/Response DTOs

Edit Assets/Scripts/Core/Services/SimulationControlService.cs:

csharp

// If the response needs a custom shape, add a new response class:
private class SimulationControlResponseMyData : SimulationControlResponseBase
{
	[JsonProperty("result")]
	public MyDataType result;
}

Standard responses use SimulationControlResponseNormal (has string result).

2. Add the Command Case

In the OnMessage() method's switch statement:

csharp

case "my_new_command":
	// Simple response:
	output = new SimulationControlResponseNormal();
	(output as SimulationControlResponseNormal).result = ComputeMyResult();
	break;

	// Or with custom data:
	output = new SimulationControlResponseMyData();
	(output as SimulationControlResponseMyData).result = GetMyData();
	break;

The response is automatically serialized and sent:

csharp

output.command = request.command;
Send(JsonConvert.SerializeObject(output));

3. Wire to Main.cs (If Needed)

If the command needs access to Main instance methods:

csharp

// In SimulationControlService, access Main via the singleton:
case "my_command":
	Main.Instance.MyNewMethod();
	output = new SimulationControlResponseNormal();
	(output as SimulationControlResponseNormal).result = SimulationService.SUCCESS;
	break;

Constants: SimulationService.SUCCESS = "ok", SimulationService.FAIL = "fail".

For multi-part request data, use SimulationService.Delimiter = "!%!" to split values.

Option B: Create a New Service Endpoint

1. Create the Service Class

Create Assets/Scripts/Core/Services/MyNewService.cs:

csharp

/*
 * Copyright (c) 2026 LG Electronics Inc.
 *
 * SPDX-License-Identifier: MIT
 */

using System;
using Newtonsoft.Json;
using WebSocketSharp;
using WebSocketSharp.Server;

public class MyNewService : WebSocketBehavior
{
	// Inject dependencies via public properties (set by factory lambda)
	public MyDependency Dependency { get; set; }

	protected override void OnMessage(MessageEventArgs e)
	{
		try
		{
			var request = JsonConvert.DeserializeObject<MyRequest>(e.Data);
			var response = ProcessRequest(request);
			Send(JsonConvert.SerializeObject(response));
		}
		catch (Exception ex)
		{
			var error = new { error = ex.Message };
			Send(JsonConvert.SerializeObject(error));
		}
	}

	protected override void OnOpen()
	{
		// Connection opened
	}

	protected override void OnClose(CloseEventArgs e)
	{
		// Connection closed
	}

	private MyResponse ProcessRequest(MyRequest request)
	{
		// Handle the request
		return new MyResponse();
	}
}

2. Register the Endpoint

Edit Assets/Scripts/Core/Modules/SimulationService.cs, in InitializeServices():

csharp

_wsServer.AddWebSocketService<MyNewService>("/my_endpoint", () =>
	new MyNewService()
	{
		Dependency = myDependencyInstance
	});

3. Clean Up on Dispose

In SimulationService.Dispose(), add removal:

csharp

_wsServer.RemoveWebSocketService("/my_endpoint");

JSON Patterns

Request format (convention from existing services):

json

{
    "command": "my_command",
    "value": "optional_parameter"
}

Response format:

json

{
    "command": "my_command",
    "result": "ok"
}

Use [JsonProperty("field_name")] attributes on DTO properties for explicit JSON field naming.

Checklist

Request/response DTOs defined with [JsonProperty] attributes
Command case added to OnMessage() switch
Uses SimulationService.SUCCESS / FAIL constants for status
Error handling wraps the command logic
New endpoints registered in SimulationService.InitializeServices()
New endpoints removed in SimulationService.Dispose()
License header on new files

Files

Just SKILL.md in .github/skills/add-websocket-command of lge-ros2/cloisim.

Open the folder on GitHubat commit f4c1f0b

Compare with similar skills

Add Websocket Command 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.

Add Websocket Command compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Add Websocket Command this skilllge-ros2/cloisim	176	—	~1.1k	Automated safety check: Pass	MIT	2 days ago
Supabase Development and Debuggingsupabase/agent-skills	2.7k	3 repos	~3.6k	Automated safety check: Pass	MIT	6 days ago
Use Yaakmountain-loop/yaak	19k	—	~1.9k	Automated safety check: Pass	MIT	yesterday
Gemini Live API Devgoogle-gemini/gemini-skills	4.3k	—	~4.6k	Automated safety check: Pass	Apache-2.0	2 days ago
Web3 PolymarketPolymarket/agent-skills	191	2 repos	~2k	Automated safety check: Pass	None	7 mo ago
GraphQL ArchitectJeffallan/claude-skills	12k	1 repos	~1.3k	Automated safety check: Pass	MIT	5 days ago

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Questions about Add Websocket Command

What does Add Websocket Command do?

Add a new WebSocket command to the simulation control service. Add Websocket Command is an agent skill from lge-ros2/cloisim. Add a new WebSocket command to the simulation control service.

When should I use Add Websocket Command?

Add Websocket Command fits situations like: : adding a new runtime control command; exposing simulation state via WebSocket; adding a new service endpoint.

How do I install Add Websocket Command in Claude Code?

Run `npx skills add lge-ros2/cloisim --skill add-websocket-command -a claude-code`. Or copy the skill folder (.github/skills/add-websocket-command in lge-ros2/cloisim) into .claude/skills/add-websocket-command in your project. Claude Code loads it when a task matches its description.

How do I install Add Websocket Command in Codex?

Run `npx skills add lge-ros2/cloisim --skill add-websocket-command -a codex`. Or copy the skill folder (.github/skills/add-websocket-command in lge-ros2/cloisim) into .agents/skills/add-websocket-command in your project. Codex loads it when a task matches its description.

Can I use Add Websocket Command 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 lge-ros2/cloisim --skill add-websocket-command -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/add-websocket-command, .gemini/skills/add-websocket-command, .github/skills/add-websocket-command and .opencode/skills/add-websocket-command in your project.

What does Add Websocket Command need to run?

SKILL.md names no scripts, command-line tools or credentials: Add Websocket Command is instructions for the agent only.

Does Add Websocket Command 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 Add Websocket Command 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 Add Websocket Command use?

Add Websocket Command 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 Add Websocket Command use?

About 1.1k tokens (SKILL.md is roughly 4.4k 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 Add Websocket Command?

Skills that share tags, products or a category with Add Websocket Command: Supabase Development and Debugging (supabase/agent-skills, 2.7k stars), Use Yaak (mountain-loop/yaak, 19k stars), Gemini Live API Dev (google-gemini/gemini-skills, 4.3k stars) and Web3 Polymarket (Polymarket/agent-skills, 191 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Add Websocket Command?

lge-ros2 (a GitHub organization) maintains it in lge-ros2/cloisim, which has 176 GitHub stars. The repository holds 18 skills in this directory. The repository was last updated on October 6, 2026.

Source: lge-ros2/cloisim on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Add Websocket Command

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Add a New WebSocket Command

When to Use

Option A: Add Command to Existing Service

1. Define Request/Response DTOs

2. Add the Command Case

3. Wire to Main.cs (If Needed)

Option B: Create a New Service Endpoint

1. Create the Service Class

2. Register the Endpoint

3. Clean Up on Dispose

JSON Patterns

Checklist

Files

Compare with similar skills

Similar skills

More from lge-ros2/cloisim

Related

Questions about Add Websocket Command