Pixel Agents

An OpenCode plugin that visualizes AI agents as animated pixel art characters on a localhost web page. Each agent from Oh My OpenCode gets a distinct character with accessories and animations reflecting their current state.

Features

• Programmatic pixel art — Characters are drawn procedurally on Canvas with distinct color palettes and accessories
• Real-time state tracking — Each agent's activity (coding, reading, searching, thinking, orchestrating) is reflected visually via WebSocket updates
• Hover tooltips — Hover over any character to see what it's currently doing
• Info page — Dedicated page explaining each agent's role and responsibilities
• Maestro Sisyphus — When Sisyphus delegates work, he conducts like an opera maestro with a baton
• Zero cloud dependencies — Runs entirely on localhost (127.0.0.1:3456)

Agents

Agent	Role	Visual Theme
Sisyphus	Orchestrator	Blue — baton, laptop, clipboard
Oracle	High-IQ Consultant	Purple — crystal ball, glasses
Librarian	External Reference Search	Brown — books, magnifying glass
Explore	Codebase Scanner	Green — binoculars, compass
Prometheus	Planning Agent	Orange — scroll, torch, blueprint
Metis	Pre-Planning Consultant	Teal — notepad, question mark, owl
Momus	Plan Reviewer & Critic	Red — red pen, checklist, mask
Atlas	Knowledge Base Builder	Dark grey — globe, map, blocks
Hephaestus	Code Craftsman	Burnt orange — hammer, anvil, wrench

Installation

Add the plugin to your opencode.json:

{
  "plugin": [
    "opencode-pixel-agents"
  ]
}

Or install from a local path during development:

{
  "plugin": [
    "/path/to/pixel-agents-opencode"
  ]
}

OpenCode will automatically install the plugin on next startup.

Usage

Once the plugin is loaded, the Pixel Agents web page starts automatically at http://127.0.0.1:3456.

You can also open it by asking the AI to use the pixel-agents tool:

> Use the pixel-agents tool

This will open the visualization in your default browser.

Pages

• Main page (/) — Live animated view of all agents with their current activity
• Info page (/info.html) — Reference page describing what each agent does

Development

Prerequisites

• Bun runtime

Setup

git clone git@github.com:nichelia/pixel-agents-opencode.git
cd pixel-agents-opencode
bun install

Build

bun run build        # Build the plugin
bun run typecheck    # Run TypeScript type-checking
bun run clean        # Remove build output

Project Structure

src/
  index.ts           # Plugin entry point, event hooks, custom tool
  types.ts           # Type definitions, agent metadata, tool-to-action mapping
  state-manager.ts   # Agent state tracking with broadcast to listeners
  server.ts          # Bun.serve() HTTP + WebSocket server
web/
  index.html         # Main visualization page
  info.html          # Agent info/reference page
  css/styles.css     # Dark theme styling
  js/renderer.js     # Programmatic pixel art character renderer
  js/app.js          # WebSocket client, DOM management, animation loop

How It Works

1. The plugin hooks into OpenCode events (session.created, session.idle, tool.execute.before/after, chat.message)
2. Tool executions are mapped to visual actions (e.g. edit → coding, grep → searching, task → orchestrating)
3. State changes are broadcast to connected browsers via WebSocket
4. The frontend renders each agent as an animated pixel art character with action-appropriate accessories

License

MIT