Skill

Viz Start — Launch the Visualization Panel

Start the Claude Viz live visualization server and open the browser panel. Call this before pushing any visualizations. The server runs on localhost:7891 and accepts POST requests with diagram content.

Install

npx claudepluginhub mararn1618/mararn1618-claude-marketplace --plugin claude-viz

Tool Access

This skill is limited to using the following tools:

Bash(bun *)Bash(curl *)Bash(open *)Bash(kill *)Bash(lsof *)

SKILL.md

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Last CommitMar 9, 2026

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How to Start

Step 1: Check if the server is already running

curl -s http://127.0.0.1:7891/api/health

If this returns {"status":"ok",...}, the server is already running. Skip to Step 3.

Step 2: Start the server

bun run SKILL_BASE_DIR/../../server.ts &

Wait 1 second, then verify:

sleep 1 && curl -s http://127.0.0.1:7891/api/health

Step 3: Open the browser

open http://127.0.0.1:7891

Tell the user: "Viz panel is open at http://127.0.0.1:7891 — place it next to your terminal."

Step 4: Confirm

Tell the user the panel is ready. They should see a dark page with "Waiting for visualizations..." message.

Viz Start — Launch the Visualization Panel

When to Use This Skill

Before using /visualize for the first time in a session
When the user asks to "open the viz panel" or "start visualization"
Automatically called by the /visualize skill if the server is not running

How to Start

Step 1: Check if the server is already running

curl -s http://127.0.0.1:7891/api/health

If this returns {"status":"ok",...}, the server is already running. Skip to Step 3.

Step 2: Start the server

bun run SKILL_BASE_DIR/../../server.ts &

Wait 1 second, then verify:

sleep 1 && curl -s http://127.0.0.1:7891/api/health

Step 3: Open the browser

open http://127.0.0.1:7891

Tell the user: "Viz panel is open at http://127.0.0.1:7891 — place it next to your terminal."

Step 4: Confirm

Tell the user the panel is ready. They should see a dark page with "Waiting for visualizations..." message.

After Startup

To push visualizations, use the /viz skill — it contains the API reference and payload format.

Stopping the Server

If the user asks to stop the viz server:

kill $(lsof -ti:7891) 2>/dev/null

Troubleshooting

Port in use: If port 7891 is taken, set a different port: CLAUDE_VIZ_PORT=7892 bun run server.ts &
Bun not installed: Install with curl -fsSL https://bun.sh/install | bash