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Agent skill

Game Update

by xD3I in xD3I/PZ_Optimization

Re-sync the repo after a Project Zomboid update (jar mtime changed) - re-decompile, regenerate and re-apply overrides, rebuild, and re-baseline.

No licenceAuto-check passed

Install Game Update

skills CLI
$ npx skills add xD3I/PZ_Optimization --skill game-update -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install xD3I/PZ_Optimization game-update --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/xD3I/PZ_Optimization.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/game-update .claude/skills/game-update && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
game-update
GitHub stars
114
Token cost
~336 tokens
SKILL.md length
86 words
Files
1
Skills in repo
12
Repo updated
First seen
Licence
None found

At a glance

Re-sync the repo after a Project Zomboid update (jar mtime changed) - re-decompile, regenerate and re-apply overrides, rebuild, and re-baseline.

  • Build.sh reports a build mismatch
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Pzopt.sh check fails
  • The game updated

What it does

Game Update is an agent skill from xD3I/PZ_Optimization. Re-sync the repo after a Project Zomboid update (jar mtime changed) - re-decompile, regenerate and re-apply overrides, rebuild, and re-baseline. Use when build.sh reports a build mismatch, pzopt.sh check fails, or the game updated.

Its SKILL.md is about 340 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Project Zomboid Build 42 performance work: class overrides, harness, findings.

When your agent uses it

  • Build.sh reports a build mismatch
  • Pzopt.sh check fails
  • The game updated

Example prompts

  • “/game-update”

What it can do on your machine

Read from SKILL.md and the folder at commit f6eb39a. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Game Update loads about 336 tokens when it runs. Until then it costs about 61 tokens; SKILL.md has 86 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~61
When it runs · the whole SKILL.md, loaded when a task matches
~336

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 86 words (~336 tokens).

“For each class in OVERRIDES: diff build/vineflower/.java against src/overrides/.java, re-apply the edits listed in docs/override-edits.md onto the fresh copy, then scripts/build.sh, scripts/test.sh, scripts/accept.sh (parity), and scripts/pzopt.sh install. Re-run stock and optimized bench + drive baselines into harness/archive/2026-09-24/baseline/native/ (see bench-run), because…”

— opening of SKILL.md by xD3I
name
game-update

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/skills/game-update of xD3I/PZ_Optimization.

Open the folder on GitHubat commit f6eb39a

Compare with similar skills

Game Update next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Game Update compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Game Update this skillxD3I/PZ_Optimization114—~336Automated safety check: PassNone
React Syncvercel/next.js143k—~486Automated safety check: PassMIT
Claude-Mem Cloud Syncthedotmack/claude-mem99k—~1kAutomated safety check: NotesApache-2.0
Agent Sync Coordinatorruvnet/ruflo74k2 repos~4kAutomated safety check: PassMIT
Fix SyncClickHouse/ClickHouse50k—~2.8kAutomated safety check: PassApache-2.0
I18n Syncaffaan-m/ECC276k—~1.8kAutomated safety check: PassMIT

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    Build local React changes in the bundle variants consumed by Next.js, sync them into a local Next.js checkout, and test the resulting integration.

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More from xD3I/PZ_Optimization

All 12 skills in this repo

  • Bench Run

    xD3I/PZ_Optimization

    Launch a hands-off Project Zomboid measurement run (bench, drive, parity, verify) with harness/run.sh, respecting the shared-machine and run-etiquette rules.

    114 GitHub stars~1.9k tokensUpdated today
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  • Jev Walk

    xD3I/PZ_Optimization

    Walk the player through a building with Jev directing (explore=mirror director=jev) on the collision-free game walk (pzopt.Nav), set up test rooms (mirrors in the corners, placed tiles), capture the…

    114 GitHub stars~1.8k tokensUpdated today
    Auto-check passed

  • Release Windows

    xD3I/PZ_Optimization

    Build the release zip of the class overrides (same zip for Windows and Linux) and publish it with the install.sh / install.ps1 installers as GitHub release assets.

    114 GitHub stars~3.1k tokensUpdated today
    Auto-check passed

  • Run Queue

    xD3I/PZ_Optimization

    Schedule any game run (bench, drive, preset, verify, multiplayer, Workshop upload, showcase recording) or media encode / stitch through harness/queue.sh on the desktop or one of the laptops (flip…

    114 GitHub stars~3.4k tokensUpdated today
    Auto-check passed

  • Workshop Comparison

    xD3I/PZ_Optimization

    Make the Workshop page's stock-vs-enhanced comparison animations (the 630x630 AVIFs of the Features section, the headline's template) from laptop or desktop runs - capture and numbers runs, the…

    114 GitHub stars~3.7k tokensUpdated today
    Auto-check passed

  • Analyze Run

    xD3I/PZ_Optimization

    Read and compare finished harness runs - frame-time tails, utilization, chunk latency, JFR waits, load phases - and look them up in Grafana.

    114 GitHub stars~536 tokensUpdated today
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Questions about Game Update

What does Game Update do?

Re-sync the repo after a Project Zomboid update (jar mtime changed) - re-decompile, regenerate and re-apply overrides, rebuild, and re-baseline. Game Update is an agent skill from xD3I/PZ_Optimization. Re-sync the repo after a Project Zomboid update (jar mtime changed) - re-decompile, regenerate and re-apply overrides, rebuild, and re-baseline.

When should I use Game Update?

Game Update fits situations like: build.sh reports a build mismatch; pzopt.sh check fails; the game updated.

How do I install Game Update in Claude Code?

Run `npx skills add xD3I/PZ_Optimization --skill game-update -a claude-code`. Or copy the skill folder (.claude/skills/game-update in xD3I/PZ_Optimization) into .claude/skills/game-update in your project. Claude Code loads it when a task matches its description.

How do I install Game Update in Codex?

Run `npx skills add xD3I/PZ_Optimization --skill game-update -a codex`. Or copy the skill folder (.claude/skills/game-update in xD3I/PZ_Optimization) into .agents/skills/game-update in your project. Codex loads it when a task matches its description.

Can I use Game Update in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add xD3I/PZ_Optimization --skill game-update -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/game-update, .gemini/skills/game-update, .github/skills/game-update and .opencode/skills/game-update in your project.

What does Game Update need to run?

SKILL.md names no scripts, command-line tools or credentials: Game Update is instructions for the agent only.

Does Game Update access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Game Update safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Game Update use?

No licence was found for Game Update or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Game Update use?

About 336 tokens (SKILL.md is roughly 1.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Game Update?

Skills that share tags, products or a category with Game Update: React Sync (vercel/next.js, 143k stars), Claude-Mem Cloud Sync (thedotmack/claude-mem, 99k stars), Agent Sync Coordinator (ruvnet/ruflo, 74k stars) and Fix Sync (ClickHouse/ClickHouse, 50k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Game Update?

xD3I (a GitHub user) maintains it in xD3I/PZ_Optimization, which has 114 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on October 8, 2026.

Source: xD3I/PZ_Optimization on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.