birdayz-skills

Claude Code skills. Image generation, code review, and Minecraft NeoForge mod development.

Install

In Claude Code

/plugin marketplace add birdayz/skills
/plugin install image-generation@birdayz-skills
/plugin install codex-review@birdayz-skills
/plugin install minecraft@birdayz-skills

CLI

claude plugin marketplace add https://github.com/birdayz/skills
claude plugin install image-generation@birdayz-skills
claude plugin install codex-review@birdayz-skills
claude plugin install minecraft@birdayz-skills

Skills

generate-with-refs

Generate images with Google Gemini using reference images. Prevents hallucinations by grounding generation in actual visual references.

The key idea: generation is driven by a markdown spec file (*-prompt.md), not chat prompts. When the AI needs to change something, it edits the spec. This is 100x more effective than wildly prompting in chat — you get reproducible, iteratable results.

/generate-with-refs path/to/folder

The folder needs a *-prompt.md and reference images. See the SKILL.md for details.

Requires GEMINI_API_KEY or GOOGLE_API_KEY env var and Go toolchain.

codex-review

Kick off an independent code review by OpenAI Codex (the codex CLI) on the current branch/PR, post it as a PR comment, and drive the fix→re-review loop. Repo-agnostic — works on any git repo with a GitHub PR.

The key point: codex is manual — no bot or webhook runs it. The skill triggers it for you (codex -m gpt-5.5 -c model_reasoning_effort=xhigh -s read-only -a never review --base <base> by default), captures the review from stdout, and posts it with gh — so you never sit waiting for a review nobody started.

/codex-review [--base <branch>] [--model <model>] [--reasoning-effort <effort>] [focus instructions]

Requires the codex CLI (logged in) and gh. See the SKILL.md for details.

minecraft

Agent-driven Minecraft NeoForge (26.1.x) mod development — build, verify, and polish a mod end to end with no human watching the screen. One plugin, three skills that work as a set (folder layout = minecraft/<skill>):

• playtest-loop — the offscreen foundation the other two build on: render the dev client/server on a virtual display nobody sees, capture pixels the agent Reads, drive the game via env-gated demo hooks in the mod, prove behavior with greppable functional asserts, and gate looks with LLM-judge loops. Bundled tools: launch-offscreen.sh, capture.sh, and a dependency-free Go keysend uinput injector. Requires Xvfb, ffmpeg, ImageMagick, and Mesa software GL (llvmpipe).
• mod-development — scaffold a mod from scratch, the decompiled-API lookup discipline, unit-test-first strategy, headless offscreen capture, driving the live game on Wayland/sway, and a pile of hard-won MC 26.1.x API gotchas.
• npc-design — offline-first custom-entity pipeline: JSON cube models, procedural atlas painting, a ~1s previewer, a persona-reviewer loop, and an auto-orbit in-game photo studio.

Install all three with minecraft@birdayz-skills. See minecraft/README.md and the per-skill SKILL.md files.

License

MIT