Avatar Builder

Procedural avatar generator powered by an MCP server. Instantly creates unique, composable avatars from mix-and-match SVG parts — no AI image generation, no API keys, no cloud dependency. Works fully offline.

Why Use This

• Instant — generates in milliseconds, not seconds
• Free — no API keys or credits required
• Offline — runs entirely on your machine
• Deterministic — same seed always produces the same avatar, perfect for user identities
• Scalable — generate thousands of unique avatars from seeds (usernames, emails, IDs)
• Vector-first — SVG output scales to any resolution; PNG export up to 2048px

When to Use

Activate this skill when the user:

• Asks to create an avatar, profile picture, or character image
• Needs placeholder user icons for a UI, app, or website
• Wants to generate unique avatars for a team, user list, or leaderboard
• Asks for pixel art, cyberpunk, or chibi character generation
• Wants consistent, reproducible avatars derived from usernames or IDs
• Needs SVG avatars they can embed directly in HTML or Markdown

Setup

The avatar builder is an MCP server. Add to your MCP settings:

{
  "mcpServers": {
    "avatar-builder": {
      "command": "npx",
      "args": ["-y", "mcp-avatar-builder"]
    }
  }
}

Tools

generate_avatar

Create an avatar with customizable style, parts, colors, and output format.

list_styles

List all available styles with their categories and palettes.

list_parts

List available parts and variants for a style, optionally filtered by category.

Styles

Chibi (200x200)

Cute, minimal pixel-art style — great for friendly profile pictures and placeholder icons.

8 categories: head (3), eyes (3), eyebrows (3), mouth (3), hair_back (3), hair_front (3), clothing (3), accessories (3)

Colors: skin (6 tones), hair (8 colors), eyes (6 colors), clothing

Cyberpunk (400x400)

High-detail style with SVG filter effects (neon glow, scanlines, noise grain), gradient fills, and cybernetic parts. Dark sci-fi aesthetic with 11 composable layers.

11 categories, 34 variants:

Extra colors: neon (6 neon colors for glow effects), accent (4 metal tones for cybernetic parts)

Horror (400x400)

Dark survival-horror style with sickly skin, wounds, fog, and blood effects. Think Resident Evil, Silent Hill, The Last of Us.

11 categories, 33 variants:

Extra colors: blood (6 wound/blood tones), atmosphere (4 environmental tones)

Retro (400x400)

Warm 1980s nostalgia style — Stranger Things, The Goonies, Stand By Me. Sunset backgrounds, feathered hair, VHS effects.

11 categories, 35 variants:

Extra colors: retro (6 warm/neon tones), accent (4 material tones)

Instructions

1. If the user doesn't specify a style, pick based on context — chibi for friendly/casual, cyberpunk for dark/techy, horror for dark/survival themes, retro for 80s/nostalgic vibes
2. For a quick unique avatar, just pass a seed — the RNG picks all parts and colors
3. For full control, specify options and colors explicitly
4. Default to format: "png" and size: 800 when the user wants to see the result visually
5. Use list_parts with a category filter to show the user what's available before customizing
6. When generating avatars for multiple users, use their username or email as the seed for consistent identity

Quick: Random Avatar from Seed

{
  "style": "cyberpunk",
  "seed": "username123",
  "format": "png",
  "size": 800
}

Full Control: Customized Cyberpunk Character

{
  "style": "cyberpunk",
  "options": {
    "background": "rain_city",
    "head": "angular",
    "eyes": "led",
    "eyebrows": "sharp",
    "mouth": "smirk",
    "hair_back": "mohawk",
    "hair_front": "mohawk",
    "face_mods": "led_tattoo",
    "clothing": "techwear",
    "effects": "glitch"
  },
  "colors": {
    "neon": "hot-pink",
    "hair": "electric-blue",
    "eyes": "cyan",
    "skin": "pale-tech"
  },
  "format": "png",
  "size": 800
}

Batch: Team Avatars from Names

Generate consistent avatars for a list of users by seeding with their names:

{"style": "cyberpunk", "seed": "alice", "format": "png", "size": 256}
{"style": "cyberpunk", "seed": "bob", "format": "png", "size": 256}
{"style": "cyberpunk", "seed": "carol", "format": "png", "size": 256}

Each person always gets the same avatar. Change the seed, get a different face.

Tips

• Use palette names ("hot-pink", "chrome", "electric-blue") or hex values ("#FF2D95") for colors
• The seed parameter is the key to deterministic generation — same seed = same avatar, every time
• For cyberpunk, neon controls glow color on eyes/tattoos/effects, accent controls metal surfaces on implants/armor
• effects: "scanlines" adds a CRT overlay; "glitch" adds color displacement bars and vignette
• Combine face_mods with accessories for maximum cyberpunk detail (e.g. led_tattoo + holo_visor)
• For horror, blood controls wound/stain colors, atmosphere controls environmental tones (steel, rust, concrete, moss)
• For retro, retro controls highlight colors (sunset-orange, neon-pink), accent controls material tones (denim, leather)
• SVG output can be embedded directly in HTML — no file hosting needed