Agent skill

Horse Websocket

Guidelines and workflows for developing and maintaining WebSocket endpoints and protocol upgrades within the Horse framework.

MITAuto-check passedBackend & APIs

Install Horse Websocket

skills CLI

$ npx skills add HashLoad/horse --skill horse-websocket -a claude-code

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

GitHub CLI

$ gh skill install HashLoad/horse horse-websocket --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/HashLoad/horse.git skills-src && mkdir -p .claude/skills && cp -r skills-src/doc/skills/horse-websocket .claude/skills/horse-websocket && 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 "horse-websocket" agent skill from https://github.com/HashLoad/horse/tree/master/doc/skills/horse-websocket into .claude/skills/horse-websocket/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "horse-websocket", 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/HashLoad/horse/tree/master/doc/skills/horse-websocket

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 HashLoad/horse --skill horse-websocket -a codex

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

GitHub CLI

$ gh skill install HashLoad/horse horse-websocket --agent codex

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

Manual copy

$ git clone --depth 1 https://github.com/HashLoad/horse.git skills-src && mkdir -p .agents/skills && cp -r skills-src/doc/skills/horse-websocket .agents/skills/horse-websocket && 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 "horse-websocket" agent skill from https://github.com/HashLoad/horse/tree/master/doc/skills/horse-websocket into .agents/skills/horse-websocket/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "horse-websocket", 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 HashLoad/horse --skill horse-websocket -a cursor

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

GitHub CLI

$ gh skill install HashLoad/horse horse-websocket --agent cursor

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

Manual copy

$ git clone --depth 1 https://github.com/HashLoad/horse.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/doc/skills/horse-websocket .cursor/skills/horse-websocket && 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 "horse-websocket" agent skill from https://github.com/HashLoad/horse/tree/master/doc/skills/horse-websocket into .cursor/skills/horse-websocket/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "horse-websocket", 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/HashLoad/horse.git --path doc/skills/horse-websocket

--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 HashLoad/horse --skill horse-websocket -a gemini-cli

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

GitHub CLI

$ gh skill install HashLoad/horse horse-websocket --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/HashLoad/horse.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/doc/skills/horse-websocket .gemini/skills/horse-websocket && 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 "horse-websocket" agent skill from https://github.com/HashLoad/horse/tree/master/doc/skills/horse-websocket into .gemini/skills/horse-websocket/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "horse-websocket", 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 HashLoad/horse horse-websocket

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 HashLoad/horse --skill horse-websocket -a github-copilot

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

Manual copy

$ git clone --depth 1 https://github.com/HashLoad/horse.git skills-src && mkdir -p .github/skills && cp -r skills-src/doc/skills/horse-websocket .github/skills/horse-websocket && 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 "horse-websocket" agent skill from https://github.com/HashLoad/horse/tree/master/doc/skills/horse-websocket into .github/skills/horse-websocket/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "horse-websocket", 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 HashLoad/horse --skill horse-websocket -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 HashLoad/horse horse-websocket --agent opencode

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

Manual copy

$ git clone --depth 1 https://github.com/HashLoad/horse.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/doc/skills/horse-websocket .opencode/skills/horse-websocket && 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 "horse-websocket" agent skill from https://github.com/HashLoad/horse/tree/master/doc/skills/horse-websocket into .opencode/skills/horse-websocket/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "horse-websocket", 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: horse-websocket
GitHub stars: 1.4k
Token cost: ~841 tokens
SKILL.md length: 229 words
Files: 1
Skills in repo: 23
Repo updated: Oct 7, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Guidelines and workflows for developing and maintaining WebSocket endpoints and protocol upgrades within the Horse framework.

Works in 2 steps: IHorseWebSocketConnection.SendText and… → The HTTP request/response objects…
Tasks that involve Realtime and WebSockets
SKILL.md covers 🟢 Request Upgrade Pattern, 🟢 Broadcasts and Session…, 🟢 Error and Exception Handling and 🟢 Thread-Safety Rules
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Horse Websocket is an agent skill from HashLoad/horse. Guidelines and workflows for developing and maintaining WebSocket endpoints and protocol upgrades within the Horse framework.

Its SKILL.md is about 840 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: Fast, opinionated, minimalist web framework for Delphi. The licence is MIT.

When your agent uses it

Tasks that involve Realtime and WebSockets

Example prompts

“Use the horse-websocket skill to guideline and workflows for developing and maintaining WebSocket endpoints and protocol upgrades within the Horse…”
“/horse-websocket”

Workflow steps

2 steps, taken from the first numbered list in SKILL.md.

IHorseWebSocketConnection.SendText and SendBinary are thread-safe and protected by an internal TCriticalSection. Do not add manual…
The HTTP request/response objects (THorseRequest, THorseResponse) are recycled/destroyed once the upgrade is completed. Do not store or…

What it can do on your machine

Read from SKILL.md and the folder at commit d4351a5. 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 delphi and pascal).
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

Horse Websocket loads about 841 tokens when it runs. Until then it costs about 35 tokens; SKILL.md has 229 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~35
When it runs · the whole SKILL.md, loaded when a task matches: ~841

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 HashLoad/horse at commit d4351a5, republished under its MIT licence (© HashLoad). 229 words, ~841 tokens.

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

name: horse-websocket
description: Guidelines and workflows for developing and maintaining WebSocket endpoints and protocol upgrades within the Horse framework.

Horse WebSocket Coding Skill

This skill provides guidelines and patterns for developers and AI agents implementing, debugging, or maintaining WebSocket endpoints in the Horse framework.

🟢 Request Upgrade Pattern

To upgrade an HTTP request to a WebSocket connection, always call Res.UpgradeToWebSocket(AOnConnectCallback) inside the route handler.

Delphi Syntax (Anonymous Procedure / Closure)

delphi

THorse.Get('/ws',
  procedure(Req: THorseRequest; Res: THorseResponse)
  begin
    Res.UpgradeToWebSocket(
      procedure(const AConn: IHorseWebSocketConnection)
      begin
        AConn.OnMessage := procedure(const AConnection: IHorseWebSocketConnection; const AText: string)
        begin
          AConnection.SendText('Received: ' + AText);
        end;
      end);
  end);

Lazarus/FPC Syntax (Object Methods)

Always use regular object methods or class procedures for callbacks in Lazarus/FPC to ensure compatibility:

pascal

type
  TWebSocketController = class
  public
    class procedure HandleWS(Req: THorseRequest; Res: THorseResponse);
    class procedure OnConnect(const AConn: IHorseWebSocketConnection);
    class procedure OnMessage(const AConnection: IHorseWebSocketConnection; const AText: string);
  end;

class procedure TWebSocketController.HandleWS(Req: THorseRequest; Res: THorseResponse);
begin
  Res.UpgradeToWebSocket(OnConnect);
end;

class procedure TWebSocketController.OnConnect(const AConn: IConn);
begin
  AConn.OnMessage := OnMessage;
end;

class procedure TWebSocketController.OnMessage(const AConnection: IHorseWebSocketConnection; const AText: string);
begin
  AConnection.SendText('Received: ' + AText);
end;

🟢 Broadcasts and Session Management

Use THorseWebSocketManager for thread-safe operations across multiple connections.

Broadcast to all: THorseWebSocketManager.Broadcast('/ws', 'Hello all!');
Broadcast excluding sender: THorseWebSocketManager.Broadcast('/ws', 'Hello others!', AConnection);

🟢 Error and Exception Handling

Silencing normal interruptions: Normal connection validation errors or manual status sends followed by pipeline interruption should raise EHorseCallbackInterrupted (from unit Horse.Exception.Interrupted) to gracefully exit the middleware pipeline.
Callback Safety: Always place try-except blocks inside custom event handlers (like OnMessage) to prevent crashes inside the worker socket threads.
Fail-Fast Detection: If a client requests a WebSocket upgrade on an unsupported provider (e.g. HttpSys or hosted ISAPI/CGI), Res.UpgradeToWebSocket will automatically reply with 501 Not Implemented and raise EHorseCallbackInterrupted.

🟢 Thread-Safety Rules

IHorseWebSocketConnection.SendText and SendBinary are thread-safe and protected by an internal TCriticalSection. Do not add manual synchronization wrappers around them.
The HTTP request/response objects (THorseRequest, THorseResponse) are recycled/destroyed once the upgrade is completed. Do not store or reference them inside any of the WebSocket callbacks (OnMessage, OnDisconnect, etc.). Use the IHorseWebSocketConnection context instead.

Files

Just SKILL.md in doc/skills/horse-websocket of HashLoad/horse.

Open the folder on GitHubat commit d4351a5

Compare with similar skills

Horse Websocket 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.

Horse Websocket compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Horse Websocket this skillHashLoad/horse	1.4k	—	~841	Automated safety check: Pass	MIT	yesterday
Supabase Development and Debuggingsupabase/agent-skills	2.7k	3 repos	~3.6k	Automated safety check: Pass	MIT	5 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	yesterday
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	4 days ago

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Questions about Horse Websocket

What does Horse Websocket do?

Guidelines and workflows for developing and maintaining WebSocket endpoints and protocol upgrades within the Horse framework. Horse Websocket is an agent skill from HashLoad/horse. Guidelines and workflows for developing and maintaining WebSocket endpoints and protocol upgrades within the Horse framework.

When should I use Horse Websocket?

Horse Websocket fits situations like: tasks that involve Realtime and WebSockets.

How do I install Horse Websocket in Claude Code?

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

How do I install Horse Websocket in Codex?

Run `npx skills add HashLoad/horse --skill horse-websocket -a codex`. Or copy the skill folder (doc/skills/horse-websocket in HashLoad/horse) into .agents/skills/horse-websocket in your project. Codex loads it when a task matches its description.

Can I use Horse Websocket 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 HashLoad/horse --skill horse-websocket -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/horse-websocket, .gemini/skills/horse-websocket, .github/skills/horse-websocket and .opencode/skills/horse-websocket in your project.

What does Horse Websocket need to run?

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

Does Horse Websocket 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 Horse Websocket 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 Horse Websocket use?

Horse Websocket 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 Horse Websocket use?

About 841 tokens (SKILL.md is roughly 3.4k 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 Horse Websocket?

Skills that share tags, products or a category with Horse Websocket: 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 Horse Websocket?

HashLoad (a GitHub organization) maintains it in HashLoad/horse, which has 1,377 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on October 7, 2026.

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

Horse Websocket

Install Horse Websocket

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

Horse WebSocket Coding Skill

🟢 Request Upgrade Pattern

Delphi Syntax (Anonymous Procedure / Closure)

Lazarus/FPC Syntax (Object Methods)

🟢 Broadcasts and Session Management

🟢 Error and Exception Handling

🟢 Thread-Safety Rules

Files

Compare with similar skills

Similar skills

Supabase Development and Debugging

Use Yaak

Gemini Live API Dev

Web3 Polymarket

GraphQL Architect

Broker Integration

More from HashLoad/horse

Horse App Structure

Horse Database Pooling

Horse Dependency Injection

Horse Files Streams

Horse Grpc

Horse Integration Tests

Questions about Horse Websocket

Install Horse Websocket

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

Horse WebSocket Coding Skill

🟢 Request Upgrade Pattern

Delphi Syntax (Anonymous Procedure / Closure)

Lazarus/FPC Syntax (Object Methods)

🟢 Broadcasts and Session Management

🟢 Error and Exception Handling

🟢 Thread-Safety Rules

Files

Compare with similar skills

Similar skills

More from HashLoad/horse

Related

Questions about Horse Websocket