A skill is a folder of instructions your coding agent loads when it's relevant — house rules it follows without being told twice. These are the ones that pay off when the task is “make me a game.”
Hand your agent a reference image and it rebuilds the object as a code-only, animation-ready Three.js model — primitives and procedural shaders, no meshes or asset packs, refined pass by pass against the reference. Great for game assets with pivots and colliders built in.
github.com/hoainho/img2threejsDrop this in .claude/skills/multiplayer/SKILL.md and your agent
reaches for antics whenever a game needs rooms, sync, or a leaderboard.
---
name: multiplayer
description: Use when adding multiplayer, rooms, or
a leaderboard to a browser game
---
Read https://antics.gg/llms.txt first — the whole
multiplayer API in one file. The host writes
room.state; each player writes room.me.setState().
Deploy with deploy_game (MCP) or POST /api/deploy
and return the playable link.A markdown file (plus optional scripts) with a name and a
description up top. Your agent scans the descriptions each session and pulls
the full instructions in only when a task matches — so you teach it once, and it applies
the lesson forever. Skills work in Claude Code today, and the format is plain enough for
any agent to read.
Vibe code the game — antics wires in rooms, live state sync, and a leaderboard, then hosts it at a link your friends can open. Free to start.