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Use when you need authoritative Paper or Folia API/behavior for a specific Minecraft version — points to the local cache of per-version server jars (for javap) and the cached Paper/Folia developer docs, instead of guessing or going to the network.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
| name | reference-cache |
| description | Use when you need authoritative Paper or Folia API/behavior for a specific Minecraft version — points to the local cache of per-version server jars (for javap) and the cached Paper/Folia developer docs, instead of guessing or going to the network. |
A local, gitignored cache so version-specific facts are looked up, not guessed.
reference/
├── servers/
│ ├── paper/<version>/ paperclip jar + extracted versions/<v>/*.jar (javap)
│ └── folia/<version>/ same, for Folia
└── docs/
├── paper/*.md cached Paper developer guides
└── folia/*.md cached Folia developer guides + threading model
Cached versions: Paper 1.17.1, 1.18.2, 1.19.4, 1.20.6, 1.21.4, 1.21.11,
26.1.1, 26.1.2; Folia 1.19.4, 1.20.6, 1.21.4, 1.21.11, 26.1.2. The current
ceiling is the 26.1 line (26.2 is still RC). Newer versions (26.x) live in the
PaperMC Fill v3 API (fill.papermc.io/v3); the legacy v2 API caps at 1.21.11
— fetch-reference.sh uses v3 with a v2 fallback.
scripts/fetch-reference.sh # downloads + extracts the server jars (re-runnable)
The docs markdown is cached separately under reference/docs/ and is committed
(small, and handy to have the static references always available). The server jars
under reference/servers/ stay gitignored (large + third-party — never committed);
re-fetch them locally with the script above.
Per-version API surface (javap) — the extracted server jar is the truth:
# newer layout = versions/<v>/*.jar; older (1.17-era) = cache/patched_*.jar
jar=$(find reference/servers/paper/1.21.4 \( -path '*/versions/*.jar' -o -name 'patched_*.jar' \) | head -1)
javap -p -classpath "$jar" net.minecraft.world.item.ItemStack | grep -i <term>
Paper jars are mojang-mapped from 1.20.5+ (javap names are real); spigot-mapped
before (1.17.1/1.18.2/1.19.4 → route names through a remapper, don't trust the
obfuscated names). See nms-archaeology for the disassembly procedure and
cross-version-item-api for the API rename/registry breaks.
Conceptual how-to (PDC, scheduler, Folia regions, commands, components, data components) — grep the cached docs:
grep -rl "PersistentDataContainer" reference/docs/paper/
grep -rl "EntityScheduler" reference/docs/folia/
Each cached doc has its source URL + fetch date at the top. The docs are the prose guides (mostly version-agnostic); for the exact API of a given version use javap on that version's jar.
A version behaves unexpectedly, you need to confirm a method/field exists on a
specific version, you're choosing an API across the range, or you need the
authoritative Folia threading rules. Confirm against the cache before changing
code; encode findings as resolvers/capability probes (paper-cross-version),
never version-string branches.
Use when running or verifying StarEnchants' test gate — which commands to run, the Paper+Folia version matrix, concurrency rules for booting many servers, and how to read results honestly instead of trusting a success banner.
Use when implementing or modifying the runtime engine — stateless systems, the activation pipeline and gate order, effect/condition/trigger/selector kinds, the Ability record, the Sink, declared Affinity, the dispatch plan, or how one activation executes.
Use when working on item state, the PDC codec, the ItemView content-hash cache, the stable-key to dense-id map, component stores, the WornState resolver, lore/name rendering, or legacy item migration.
Use when writing or reviewing ANY code in the StarEnchants repo — the design principles, engine boundaries, threading/Folia rules, config snapshot pattern, extensibility pattern, and the invariants every change must preserve.
Use when writing or reviewing code on the combat or item hot path, declaring an effect Affinity, touching the Sink/Dispatcher, the ItemView cache, interning, or anything the ArchUnit/CI lint or the JMH bench guards.
Use when working on the config schema/YAML, the DSL and ParamSpec, the compiler (resolve/typecheck/lower/erase/snapshot), diagnostics, transactional reload, catalog validation, or the EE/EA/AE and legacy-config migrator.