OM

omcustomcodex:web

Provides interactive control for the agent's built-in Web UI server.

Install

mkdir -p .claude/skills/omcustomcodex-web && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/12777" && unzip -o skill.zip -d .claude/skills/omcustomcodex-web && rm skill.zip

Installs to .claude/skills/omcustomcodex-web

Activation

This is the description your AI agent reads to decide when to run this skill — the better it matches your request, the more reliably it fires.

Control and inspect the built-in Web UI (packages/serve) — start, stop, status, open
84 charsno explicit “when” trigger
Beginner

Key capabilities

  • Show Web UI server status
  • Start the Web UI server in the background
  • Stop the running Web UI server
  • Open the Web UI in the default browser
  • Detect port conflicts before starting the server

How it works

This skill controls the built-in Web UI server by checking its status, managing its lifecycle (start/stop), and opening it in a browser. It also detects if the required port is already in use.

Inputs & outputs

You give it
Argument: 'start', 'stop', 'status', or 'open'
You get back
Server status, URL, or action execution (start/stop/open)

When to use omcustomcodex:web

  • Check if the web UI is running
  • Stop the background server
  • Open the web UI dashboard

About this skill

Web UI Control

Interactive control for the built-in Web UI server (packages/serve).

Arguments

ArgumentAction
status (default)Show server status (PID, port, URL)
startStart the Web UI server in background
stopStop the running Web UI server
openOpen the Web UI in the default browser

Workflow

Step 1: Check Server Status

Run these checks via Bash:

PORT=${OMCODEX_PORT:-${OMCUSTOM_PORT:-4321}}
PID_FILE="$HOME/.omcodex-serve.pid"
PID=$(cat "$PID_FILE" 2>/dev/null)

# Process alive?
if [ -n "$PID" ] && kill -0 "$PID" 2>/dev/null; then
  STATUS="running"
else
  STATUS="stopped"
  # Clean stale PID file
  [ -f "$PID_FILE" ] && rm "$PID_FILE"
fi

# Port check
PORT_PID=$(lsof -ti :$PORT 2>/dev/null | head -1)

echo "STATUS=$STATUS PID=$PID PORT=$PORT PORT_PID=$PORT_PID"

Step 2: Display Status

Web UI Control
─────────────
Status: ● Running (PID {PID})
URL:    http://localhost:{PORT}
PID:    ~/.omcodex-serve.pid

or

Web UI Control
─────────────
Status: ○ Stopped
Port:   {PORT} (free)

Step 3: Execute Subcommand

SubcommandAction
statusDisplay status from Step 2, then exit
startIf stopped → run omcodex serve via Bash. If running → show URL
stopIf running → run omcodex serve-stop via Bash. If stopped → inform user
openIf running → open http://localhost:{PORT} (macOS). If stopped → ask to start first

Step 4: Port Conflict Detection

Before start, check if port is already occupied by another process:

PORT_PID=$(lsof -ti :$PORT 2>/dev/null | head -1)
if [ -n "$PORT_PID" ]; then
  PROC=$(ps -p $PORT_PID -o comm= 2>/dev/null)
  echo "Port $PORT is occupied by $PROC (PID $PORT_PID)"
fi

If occupied by a non-serve process, warn the user and suggest --port option.

No Argument Behavior

When called without arguments (/omcustomcodex:web):

  1. Show status
  2. If stopped, suggest: "Run /omcustomcodex:web start to start the server"
  3. If running, suggest: "Run /omcustomcodex:web open to open in browser"

When not to use it

  • The task requires interaction with a different web server

Limitations

  • The skill controls only the built-in Web UI (packages/serve)
  • Opening the Web UI is specific to macOS for the 'open' command

How it compares

This skill provides direct command-line control over the Web UI server, offering specific actions like status checks and port conflict detection, unlike manually managing server processes.

Compared to similar skills

omcustomcodex:web side by side with the closest alternatives in the catalog.

SkillInstallsUpdatedSafetyDifficulty
omcustomcodex:web (this skill)03moReviewBeginner
pptx3936moReviewAdvanced
nano-pdf632moReviewBeginner
video-downloader1017moReviewBeginner

Try saying

Example prompts that trigger this skill in your AI assistant.

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