fxgl-skills

Canonical, tool-agnostic coding skills for AI-assisted FXGL game development (Java 17+, FXGL 21.x).

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

  • List Skills: List all available FXGL coding skills with their name, description, category, and tags. Returns metadata for all 50 skills covering 2D game types (platformer, RPG, shooter, puzzle, etc.),
  • Get Skill: Retrieve the full implementation guidance for a single FXGL skill by its exact name. Returns the complete SKILL.md file, which includes YAML front matter (triggers, compatibility, tags, all
  • Search Skills: Search across all 50 FXGL skills by keyword or phrase. Matches against skill names, descriptions, categories, tags, and trigger phrases. Returns all matching skills with their name, des

What data it sees

Do you need an account

No: the server works without sign-in

Canonical, tool-agnostic coding skills for AI-assisted FXGL game development (Java 17+, FXGL 21.x). Compatible with Claude Code, GitHub Copilot, Cursor, and any MCP-capable AI tool.

How to connect

How to connect fxgl-skills to Claude

The server address to paste into Claude settings:

https://fxgl-skills--rabauer-dev.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect fxgl-skills to ChatGPT

The server address to paste into ChatGPT settings:

https://fxgl-skills--rabauer-dev.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect fxgl-skills to Cursor

The server address to paste into Cursor settings:

https://fxgl-skills--rabauer-dev.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (3)

Raw names from tools/list. Only developers need these.

list_skillsList all available FXGL coding skills with their name, description, category, and tags. Returns metadata for all 50 skills covering 2D game types (platformer, RPG, shooter, puzzle, etc.), 3D game types (FPS, voxel, third-person), and engine subsystems (physics, AI pathfinding, animation, audio, input, UI, save/load). Call this first to discover which skills exist before calling get_skill.
get_skillRetrieve the full implementation guidance for a single FXGL skill by its exact name. Returns the complete SKILL.md file, which includes YAML front matter (triggers, compatibility, tags, allowed tools) followed by detailed Markdown guidance with FXGL API references, step-by-step patterns, and Java code examples targeting Java 17+ and FXGL 21.x. Use list_skills or search_skills first if you are unsure of the exact skill name.
search_skillsSearch across all 50 FXGL skills by keyword or phrase. Matches against skill names, descriptions, categories, tags, and trigger phrases. Returns all matching skills with their name, description, category, tags, and triggers. Use this when you know what you want to build but are not sure which skill covers it — for example, query "jump" to find platformer and physics skills, "enemy" to find AI and pathfinding skills, or "save" to find persistence skills.