agentmods.dev

minecraft-agent-skills: Skill for Claude Code

.agents/skills/minecraft-plugin-dev/SKILL.md

minecraft-plugin-dev is a skill for Claude Code, Codex from Jahrome907/minecraft-agent-skills. It costs 66 tokens per session (3,954 once invoked), scanned A, original, MIT.

A guide for building server-side Minecraft plugins in Java. It focuses on Paper 26.x and older Bukkit-based 1.21.x servers, including events, commands, scheduled tasks, configuration, stored player data, and text features.

In plain words
What is it for?
Use it to create or debug Paper, Spigot, or Bukkit plugins that handle commands, events, scheduled work, configuration, player data, and server behavior.
Why use it?
It helps you target the correct server platform and Java version when adding server behavior. It also clarifies that client mods and vanilla datapacks are different kinds of projects.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is Jahrome907/minecraft-agent-skills's own configuration. It tells Claude Code and Codex how to work on minecraft-agent-skills itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything minecraft-agent-skills configures →

not rated 197repo +2 changed 7d ago A scan SkillSpector: pass 66 tokens original MIT
View source ↗ Jahrome907/minecraft-agent-skills
Reuse

Borrowing it

Nothing to install: this file belongs to Jahrome907/minecraft-agent-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Jahrome907/minecraft-agent-skills/main/.agents/skills/minecraft-plugin-dev/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Jahrome907/minecraft-agent-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for minecraft-plugin-dev

README.md
[![agentmods](https://agentmods.dev/badge/skills/jahrome907/minecraft-agent-skills/minecraft-plugin-dev/github.svg)](https://agentmods.dev/skills/jahrome907/minecraft-agent-skills/minecraft-plugin-dev)
Your own site
<a href="https://agentmods.dev/skills/jahrome907/minecraft-agent-skills/minecraft-plugin-dev"><img src="https://agentmods.dev/badge/skills/jahrome907/minecraft-agent-skills/minecraft-plugin-dev/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for minecraft-plugin-dev

Your own site · 80×15
<a href="https://agentmods.dev/skills/jahrome907/minecraft-agent-skills/minecraft-plugin-dev"><img src="https://agentmods.dev/badge/skills/jahrome907/minecraft-agent-skills/minecraft-plugin-dev.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,954 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00066 $0.03954
Opus 5.5 $0.00026 $0.01582
Sonnet 5.5 $0.00013 $0.00791
Haiku 4.5 $0.00007 $0.00395

Measured 7d ago against content hash f77127c89540, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

minecraft-plugin-dev scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/validate-plugin-layout.sh, scripts/vendor/js-yaml.min.cjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/minecraft-plugin-dev/SKILL.md · 501 lines

How it starts

The opening of the file, as written. The whole thing — 501 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Minecraft Plugin Development Skill

Platform Overview

Platform Base API Notes
Paper Bukkit/Spigot + Paper extensions Recommended; async chunk loading, Adventure native
Spigot Bukkit + Spigot extensions Legacy; fewer APIs, slower
Bukkit Base API only Avoid for new plugins
Folia Paper fork Region-threaded; requires special scheduler APIs

Paper is the recommended target. Paper includes all Bukkit and Spigot APIs plus significant performance improvements and additional APIs.

Routing Boundaries

  • Use when: the target is server-side Paper/Bukkit/Spigot plugin behavior with JavaPlugin APIs.
  • Do not use when: the task requires client-side installable mods or loader APIs (minecraft-modding / minecraft-multiloader).
  • Do not use when: the task is pure vanilla datapack/command content (minecraft-datapack / minecraft-commands-scripting).

Bundled References

  • Read references/runtime-patterns.md when the task touches scheduling, Folia support, PDC, Adventure/MiniMessage, YAML config, Vault, or Paper-specific APIs.
  • Read references/paper-plugin-commands.md for a Paper-only paper-plugin.yml project or Brigadier command registration.

Project Setup

The examples below target current Paper 26.3 and Java 25. For an existing 1.21.x plugin, preserve its 1.21.x-R0.1-SNAPSHOT dependency, Java 21 toolchain, and matching api-version until the project is intentionally ported.

settings.gradle.kts

rootProject.name = "my-plugin"

build.gradle.kts

plugins {
    java
}

group = "com.example"
version = "1.0.0-SNAPSHOT"

repositories {
    mavenCentral()
    maven("https://repo.papermc.io/repository/maven-public/")
}

dependencies {
    compileOnly("io.papermc.paper:paper-api:26.3.build.+")
}

java {
    toolchain.languageVersion.set(JavaLanguageVersion.of(25))
}

tasks {
    processResources {
        // Substitutes ${version} in plugin.yml with the Gradle project version
        filesMatching(listOf("plugin.yml", "paper-plugin.yml")) {
            expand("version" to project.version)
        }
    }
}

Read the full file on GitHub · 501 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago Changed · +7 lines f77127c89540
  2. 26d ago Changed 57a61bc50a72
  3. 2mo ago Changed · +3 lines 56ccd3472e10
  4. 2mo ago First seen · 491 lines · 66 tokens per session scan A be3aef53a6aa

Subscribe to this mod's changes

minecraft-plugin-dev is a skill published in the GitHub repository Jahrome907/minecraft-agent-skills (197 stars, last pushed 8d ago), licensed MIT. It adds 66 tokens to every session and 3,954 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Game developmentJavaLanguagescodexfabricminecraftminecraft-datapackminecraft-moddingminecraft-plugin
Related

minecraft-plugin-dev compared with skills from other repositories

minecraft-plugin-dev next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
minecraft-plugin-devJahrome907/minecraft-agent-skillsSkill1978d agoMITA66Claude Code, Codex
1211-mods-exsamplecode-onigiri/mc-modding-skillSkill25mo agoMITA135Claude Code, Codex
mc-molangguguzea/MC-AI-Coding-Assistant-ToolSkill132yesterdaynoneA27Claude Code, Codex
minecraft-mod-mcp-helperdcd887/minecraft-mcp-serverSkill014d agoMITA109Claude Code, Codex
gpt-proscasella/codex-gpt-proSkill46mo agoMITA130Codex
paper-plugin-devATOMGAMERAGA/Paper-ClaudePluginSkill47mo agoMITA151Claude Code
minecraft-moddinghairyf/skillsSkill2623d agoMITA74Claude Code, Codex