Claude Skills by AIKUSAN

Set up, configure, build, analyze, and operate Minecraft Java Edition servers for 1.21.x across Paper, Purpur, Folia, Velocity networks, and modded (Fabric/NeoForge) deployments. Use this for Paper/Purpur/Folia/Velocity server building, plugin discovery/download/install planning from Hangar, Modrinth, GitHub, SpigotMC, or BukkitDev, plugin marketplace/source review, server zip/folder analysis, server archetype design (lobby, SMP, creative, minigames, proxy network), plugin compatibility/confi...

Write automated tests for Minecraft mods and plugins for 1.21.x. Covers NeoForge GameTests (@GameTest annotation, GameTestHelper assertions, test structure placement), Fabric game tests (fabric-gametest-api-v1), unit testing non-Minecraft logic with JUnit 5, MockBukkit for Paper/Bukkit plugin testing (mock server, mock player, event dispatching, inventory checking), integration testing with a test server via Gradle, and GitHub Actions CI workflows that run GameTests headlessly. Includes patte...

Create custom world generation content for Minecraft 1.21.x including custom biomes, dimensions, noise settings, surface rules, placed/configured features, carvers, structure sets, and biome modifiers. Covers both the datapack-only approach (JSON worldgen files) and the mod-code approach (NeoForge BiomeModifiers, Fabric BiomeModification API, code-driven worldgen registration with DeferredRegister). Includes JSON schemas for biome, noise_settings, placed_feature, configured_feature, structure...

Operate WorldEdit safely and efficiently for Minecraft 1.21.x server build/admin workflows. Covers selection mechanics, region operations, masks and patterns, clipboards and schematics, brushes and terraforming, undo/history safety, and practical runbooks for spawn edits, arena resets, block cleanup, and path shaping. Use for command-driven world operations, not plugin development.

Develop Minecraft Bedrock Edition add-ons for 1.21.x with resource packs, behavior packs, manifest.json UUID/version management, Script API JavaScript or TypeScript using @minecraft/server, custom blocks/items/entities, packaging as .mcpack or .mcaddon, local hot-reload workflows, and BDS deployment notes. Use for official Bedrock add-on development, not Java plugins or general server administration.

Operate Minecraft Bedrock Dedicated Server for 1.21.x. Use for BDS install and update planning, UDP networking, server.properties, allowlist.json, permissions.json, world folders, resource_packs and behavior_packs deployment, backup/restore, Docker or service management, log triage, and incident response. Choose this for Bedrock server administration rather than Java Paper/Purpur operations or Bedrock add-on development.

Set up CI/CD pipelines, automated publishing, and release workflows for Minecraft mods and plugins for 1.21.x. Covers GitHub Actions matrix builds for NeoForge and Fabric, automated publishing to Modrinth (via minotaur Gradle plugin) and CurseForge (via curseforgegradle), GitHub Releases with JAR artifacts, semantic versioning conventions for Minecraft mods, CHANGELOG generation, Dependabot for Gradle wrapper and plugin updates, build caching with gradle/actions/setup-gradle, pull request che...

Write Minecraft vanilla commands, NBT scripts, scoreboards, and complex execute chains for use in command blocks, chat, or .mcfunction files. Covers full execute subcommand reference (as/at/in/positioned/rotated/facing/anchored/if/unless/store/run), selector arguments with all filter options, scoreboard objectives and operations, NBT path syntax for entities/blocks/storage, schedule and forceload commands, tellraw/title JSON text components, bossbar, team management, item modification command...

Operate Java-to-Bedrock crossplay for Minecraft 1.21.x servers with Geyser and Floodgate. Use for proxy placement, online/offline authentication choices, Bedrock client connection triage, resource-pack delivery, converted-pack placement, plugin compatibility checks, port/firewall issues, and safe rollout/rollback of crossplay access.

Create, edit, and debug Minecraft vanilla datapacks for 1.21.x. Covers the full datapack format: pack.mcmeta, function files (.mcfunction), advancements, predicates, loot tables, item modifiers, recipe overrides, tags, damage types, dimension types, worldgen overrides, and structure sets. Handles function syntax, execute command chains, macro functions (1.20.2+), storage NBT, scoreboard operations, advancement triggers, pack format numbers, and /reload workflow. No Java or mod loader required...

Operate EssentialsX on Minecraft 1.21.x servers with safe, practical admin workflows. Covers module scope, install and version-alignment checks, Vault economy integration, kits/warps/homes/spawn operations, permissions patterns, moderation workflows (mute, jail, tempban), and common config pitfalls. Use when the task involves EssentialsX commands, config, permissions, economy, or moderation operations — not plugin development or general server deployment.

Generate Minecraft-focused raster assets with Codex's built-in image generation tool, including pack icons, promo art, concept textures, thumbnails, server banners, and UI mockups. Use when the deliverable should be a bitmap image rather than JSON models, SVG, or code-native assets.

Full-stack Minecraft mod development skill for both NeoForge (1.21+) and Fabric (1.21+). Scaffolds new mods, adds custom blocks, items, entities, recipes, commands, GUIs, dimensions, and data generation. Knows the NeoForge DeferredRegister + event-bus system and the Fabric Registry + ModInitializer system. Use when the user asks to create a Minecraft mod, add a feature to an existing mod, fix a mod bug, generate JSON assets/data, or migrate between modding platforms. Prefer NeoForge unless th...

Build Minecraft mods targeting both NeoForge and Fabric simultaneously using the Architectury framework for Minecraft 1.21.x. Covers Architectury project structure (common/neoforge/fabric subprojects), ExpectPlatform annotation for platform-specific implementations, shared registry via Architectury's registration API, platform-specific entrypoints, architectury-loom Gradle plugin configuration, gradle.properties for both loaders, multi-jar publishing to Modrinth and CurseForge, and avoiding c...

Administer Minecraft server permissions for 1.21.x, centered on LuckPerms and common Vault-integrated stacks. Use for groups, tracks, inheritance, contexts, temporary grants, staff role design, user audits, permission exports, rollback-safe edits, and plugin permission triage across Java servers and crossplay environments.

Develop Minecraft server plugins using the Paper/Bukkit/Spigot API for Minecraft 1.21.x. Handles creating Paper plugins with JavaPlugin, event listeners with @EventHandler, commands, schedulers (sync/async/Folia-safe), Persistent Data Container (PDC), Adventure text components, Vault economy integration, BungeeCord/Velocity messaging, plugin.yml and paper-plugin.yml configuration, YAML config management, and Paper-specific enhancement APIs. Always targets Paper API 1.21.x (Java 21) with Gradl...

Convert or assist conversion of Minecraft Java Edition resource packs to Bedrock Edition resource packs for 1.21.x. Use for Java pack inspection, choosing Thunder or Geyser PackConverter for simple packs, JE2BE for PBR or RTX-oriented packs, running the bundled conversion helper, producing .mcpack outputs, reporting unsupported Java-only assets, and planning manual Bedrock fixes.

Create and edit Minecraft resource packs for 1.21.x including custom block models, item models, blockstate definitions, textures (PNG format requirements), sounds.json, custom fonts, MCMETA animation files, OptiFine CIT (Custom Item Textures), and pack.mcmeta format. Covers the full block/item model JSON schema (parent, textures, elements, display, overrides), multi-layer items, GUI textures, GUI sprites, language files, shader integration (core shaders, Iris), and the pack format numbers for...

Set up, configure, build, analyze, and operate Minecraft Java Edition servers for 1.21.x across Paper, Purpur, Folia, Velocity networks, and modded (Fabric/NeoForge) deployments. Use this for Paper/Purpur/Folia/Velocity server building, plugin discovery/download/install planning from Hangar, Modrinth, GitHub, SpigotMC, or BukkitDev, plugin marketplace/source review, server zip/folder analysis, server archetype design (lobby, SMP, creative, minigames, proxy network), plugin compatibility/confi...

Write automated tests for Minecraft mods and plugins for 1.21.x. Covers NeoForge GameTests (@GameTest annotation, GameTestHelper assertions, test structure placement), Fabric game tests (fabric-gametest-api-v1), unit testing non-Minecraft logic with JUnit 5, MockBukkit for Paper/Bukkit plugin testing (mock server, mock player, event dispatching, inventory checking), integration testing with a test server via Gradle, and GitHub Actions CI workflows that run GameTests headlessly. Includes patte...

Create custom world generation content for Minecraft 1.21.x including custom biomes, dimensions, noise settings, surface rules, placed/configured features, carvers, structure sets, and biome modifiers. Covers both the datapack-only approach (JSON worldgen files) and the mod-code approach (NeoForge BiomeModifiers, Fabric BiomeModification API, code-driven worldgen registration with DeferredRegister). Includes JSON schemas for biome, noise_settings, placed_feature, configured_feature, structure...

Operate WorldEdit safely and efficiently for Minecraft 1.21.x server build/admin workflows. Covers selection mechanics, region operations, masks and patterns, clipboards and schematics, brushes and terraforming, undo/history safety, and practical runbooks for spawn edits, arena resets, block cleanup, and path shaping. Use for command-driven world operations, not plugin development.

- Example workflow: ```yaml name: Build on: push: branches: ["main"] ```

Fixture with malformed workflow YAML.

- `MODRINTH_TOKEN`

Fixture with valid multiline flow collections in workflow YAML.

- `MODRINTH_TOKEN`

- `MODRINTH_TOKEN` - `CURSEFORGE_TOKEN`

Fixture with valid workflow YAML but a warning-only secrets section.