The most widely used, high performance Minecraft server that aims to fix gameplay and mechanics inconsistencies
This report summarizes scanner evidence for PaperMC/Paper, a Java project with 12,722 GitHub stars. SynthScan examined 357,046 lines of code across 3419 source files, recording 780 pattern matches distributed across 5 syntactic categories. The legacy adjusted pattern signal is 23.8 (Elevated pattern signal); it is not an authorship estimate.
Use the findings to ask whether maintainers can explain intent, verify dependencies, simplify unnecessary scaffolding, and focus review effort. Risk Payload v1 adds ownership, supply-chain, over-engineering, and review-effort vectors when available. These are prompts for human verification, not probabilities, security findings, or measured maintenance costs.
Use each vector to guide manual verification of the underlying findings.
Can maintainers explain intent, assumptions, and trade-offs? 12 finding(s).
Are imports declared and package/API names verified? 767 finding(s).
Are wrappers, guards, and repeated structures necessary? 1 finding(s).
Which changes need focused human review? 780 finding(s).
This chart tracks the legacy adjusted pattern score across scan runs. Changes can reflect source changes, scan coverage, or detector/scoring versions; they do not measure AI adoption or prove that a team refactored code. Compare runs only when their scoring versions are compatible. The dashed line tracks the raw pattern-hit count.
Groups findings by configured severity weight. Severity is not a confidence estimate, security rating, or proof that a package is missing. Verify imports against the project's manifests and inspect each finding in its local design context.
This horizontal bar chart shows where configured pattern scores accumulate across directories. Treat the bars as locations to inspect, not as evidence of authorship or code quality. Use the file-level findings to decide whether a directory needs a focused ownership, dependency, complexity, or review check.
The scanner identified 780 distinct pattern matches across 5 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.
Reading the findings table: The Severity column indicates the configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| CRITICAL | …r-api/src/test/java/org/bukkit/support/TestServer.java | 43 | return io.papermc.paper.registry.RegistryAccess.registryAccess().getRegistry(((Class<Keyed>)invocationOnMock | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/RegionAccessor.java | 457 | com.google.common.base.Preconditions.checkArgument(type.getEntityClass() != null, "%s is not a valid EntityType, | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/RegionAccessor.java | 462 | com.google.common.base.Preconditions.checkArgument(type.getEntityClass() != null, "%s is not a valid EntityType, | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/Server.java | 1373 | return this.broadcast(net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().deser | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/FireworkEffect.java | 47 | public static final net.kyori.adventure.util.Index<String, org.bukkit.FireworkEffect.Type> NAMES = net.kyori.adv | CODE |
| CRITICAL | …ava/org/bukkit/configuration/ConfigurationSection.java | 1090 | return this.getComponent(path, net.kyori.adventure.text.minimessage.MiniMessage.miniMessage(), fallback); | CODE |
| CRITICAL | …ava/org/bukkit/configuration/ConfigurationSection.java | 1103 | this.setComponent(path, net.kyori.adventure.text.minimessage.MiniMessage.miniMessage(), value); | CODE |
| CRITICAL | …-api/src/main/java/org/bukkit/entity/LivingEntity.java | 1415 | com.google.common.base.Preconditions.checkArgument(hand != null && hand.isHand(), String.format("Expected a vali | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/entity/Player.java | 80 | return net.kyori.adventure.identity.Identity.identity(this.getUniqueId()); | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/entity/Player.java | 2829 | this.sendResourcePacks(net.kyori.adventure.resource.ResourcePackRequest.resourcePackRequest() | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/entity/Player.java | 2833 | .packs(net.kyori.adventure.resource.ResourcePackInfo.resourcePackInfo(uuid, java.net.URI.create(url), hash)) | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/entity/Player.java | 3607 | return net.kyori.adventure.text.event.HoverEvent.showEntity(op.apply(net.kyori.adventure.text.event.HoverEvent.S | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/entity/Entity.java | 1159 | return net.kyori.adventure.text.event.HoverEvent.showEntity(op.apply(net.kyori.adventure.text.event.HoverEvent.S | CODE |
| CRITICAL | …c/main/java/org/bukkit/plugin/SimplePluginManager.java | 600 | callEvent(new com.destroystokyo.paper.event.server.ServerExceptionEvent(new com.destroystokyo.paper.exception.Se | CODE |
| CRITICAL | …c/main/java/org/bukkit/plugin/SimplePluginManager.java | 673 | callEvent(new com.destroystokyo.paper.event.server.ServerExceptionEvent(new com.destroystokyo.paper. | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/plugin/Plugin.java | 211 | return net.kyori.adventure.text.logger.slf4j.ComponentLogger.logger(getLogger().getName()); | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/plugin/Plugin.java | 227 | return org.apache.logging.log4j.LogManager.getLogger(getLogger().getName()); | CODE |
| CRITICAL | …i/src/main/java/org/bukkit/plugin/java/JavaPlugin.java | 292 | private static final PluginLoader INSTANCE = net.kyori.adventure.util.Services.service(PluginLoader.class) | CODE |
| CRITICAL | …i/src/main/java/org/bukkit/plugin/java/JavaPlugin.java | 296 | init(server, description, dataFolder, file, classLoader, description, com.destroystokyo.paper.utils.PaperPluginL | CODE |
| CRITICAL | …ain/java/org/bukkit/plugin/java/PluginClassLoader.java | 74 | this.logger = com.destroystokyo.paper.utils.PaperPluginLogger.getLogger(description); // Paper - Register logger | CODE |
| CRITICAL | …ain/java/org/bukkit/plugin/java/PluginClassLoader.java | 77 | this.classLoaderGroup = io.papermc.paper.plugin.provider.classloader.PaperClassLoaderStorage.instance().register | CODE |
| CRITICAL⚡ | …ain/java/org/bukkit/plugin/java/PluginClassLoader.java | 322 | if (org.bukkit.configuration.serialization.ConfigurationSerializable.class.isAssignableFrom(clazz)) { | CODE |
| CRITICAL⚡ | …ain/java/org/bukkit/plugin/java/PluginClassLoader.java | 324 | org.bukkit.configuration.serialization.ConfigurationSerialization.registerClass(serializable); | CODE |
| CRITICAL⚡ | …ain/java/org/bukkit/plugin/java/PluginClassLoader.java | 329 | if (org.bukkit.configuration.serialization.ConfigurationSerializable.class.isAssignableFrom(clazz)) { | CODE |
| CRITICAL⚡ | …ain/java/org/bukkit/plugin/java/PluginClassLoader.java | 331 | org.bukkit.configuration.serialization.ConfigurationSerialization.unregisterClass(serializable); | CODE |
| CRITICAL | …ava/org/bukkit/plugin/messaging/StandardMessenger.java | 544 | channel = org.apache.commons.lang3.StringUtils.normalizeSpace(channel); | CODE |
| CRITICAL | …/src/main/java/org/bukkit/permissions/Permissible.java | 139 | return net.kyori.adventure.util.TriState.byBoolean(this.hasPermission(permission)); | CODE |
| CRITICAL | …/src/main/java/org/bukkit/permissions/Permissible.java | 153 | return net.kyori.adventure.util.TriState.byBoolean(this.hasPermission(permission)); | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/map/MapCursor.java | 71 | this.caption = caption == null ? null : net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.leg | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/map/MapCursor.java | 124 | this.caption = caption == null ? null : net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.leg | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/map/MapCursor.java | 270 | return this.caption == null ? null : net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacy | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/map/MapCursor.java | 281 | this.caption = caption == null ? null : net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.leg | CODE |
| CRITICAL | …i/src/main/java/org/bukkit/scoreboard/DisplaySlot.java | 32 | public static final net.kyori.adventure.util.Index<String, DisplaySlot> NAMES = net.kyori.adventure.util.Index.creat | CODE |
| CRITICAL | …pi/src/main/java/org/bukkit/scoreboard/Scoreboard.java | 174 | return this.registerNewObjective(name, criteria, net.kyori.adventure.text.serializer.legacy.LegacyComponentSeria | CODE |
| CRITICAL | …src/main/java/org/bukkit/inventory/SmithingRecipe.java | 48 | com.google.common.base.Preconditions.checkArgument(!result.isEmpty() || this instanceof ComplexRecipe, "Recipe c | CODE |
| CRITICAL | …/src/main/java/org/bukkit/inventory/InventoryView.java | 286 | return net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().deserialize(this.get | CODE |
| CRITICAL | …-api/src/main/java/org/bukkit/inventory/ItemStack.java | 1097 | return io.papermc.paper.inventory.ItemRarity.valueOf(this.getItemMeta().getRarity().name()); | CODE |
| CRITICAL | …src/main/java/org/bukkit/command/SimpleCommandMap.java | 145 | String[] args = org.apache.commons.lang3.StringUtils.split(commandLine, ' '); // Paper - fix adjacent spaces (fr | CODE |
| CRITICAL | …src/main/java/org/bukkit/command/SimpleCommandMap.java | 170 | server.getPluginManager().callEvent(new com.destroystokyo.paper.event.server.ServerExceptionEvent(new com.de | CODE |
| CRITICAL | …src/main/java/org/bukkit/command/SimpleCommandMap.java | 176 | server.getPluginManager().callEvent(new com.destroystokyo.paper.event.server.ServerExceptionEvent(new com.de | CODE |
| CRITICAL | …src/main/java/org/bukkit/command/SimpleCommandMap.java | 257 | server.getPluginManager().callEvent(new com.destroystokyo.paper.event.server.ServerExceptionEvent(new com.de | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/command/Command.java | 202 | if (!permissionMessage.equals(net.kyori.adventure.text.Component.empty())) { | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/command/Command.java | 203 | target.sendMessage(permissionMessage.replaceText(net.kyori.adventure.text.TextReplacementConfig.builder().ma | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/command/Command.java | 341 | return net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().serializeOrNull(perm | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/command/Command.java | 412 | this.permissionMessage = net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().de | CODE |
| CRITICAL⚡ | paper-api/src/main/java/org/bukkit/command/Command.java | 467 | broadcastCommandMessage(source, net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySecti | CODE |
| CRITICAL⚡ | paper-api/src/main/java/org/bukkit/command/Command.java | 475 | net.kyori.adventure.text.TextComponent.Builder result = net.kyori.adventure.text.Component.text() | CODE |
| CRITICAL⚡ | paper-api/src/main/java/org/bukkit/command/Command.java | 479 | .append(net.kyori.adventure.text.Component.text(": ")) | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/command/Command.java | 501 | net.kyori.adventure.text.TextComponent.Builder colored = net.kyori.adventure.text.Component.text() | CODE |
| CRITICAL | paper-api/src/main/java/org/bukkit/command/Command.java | 504 | .append(net.kyori.adventure.text.Component.text("["), result, net.kyori.adventure.text.Component.text("]")); | CODE |
| CRITICAL | …pi/src/main/java/org/bukkit/command/CommandSender.java | 139 | this.sendMessage(net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().serialize( | CODE |
| CRITICAL | …pi/src/main/java/org/bukkit/command/CommandSender.java | 161 | this.sendMessage(net.kyori.adventure.text.minimessage.MiniMessage.miniMessage().deserialize(message, this)); | CODE |
| CRITICAL | …pi/src/main/java/org/bukkit/command/CommandSender.java | 174 | this.sendMessage(net.kyori.adventure.text.minimessage.MiniMessage.miniMessage().deserialize(message, this, resol | CODE |
| CRITICAL | …pi/src/main/java/org/bukkit/command/CommandSender.java | 183 | this.sendMessage(net.kyori.adventure.text.Component.text(message)); | CODE |
| CRITICAL | …pi/src/main/java/org/bukkit/command/CommandSender.java | 211 | this.sendMessage(new net.md_5.bungee.api.chat.TextComponent(components).toLegacyText()); | CODE |
| CRITICAL | …n/java/org/bukkit/command/PluginCommandYamlParser.java | 77 | newCmd.permissionMessage(net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySect | CODE |
| CRITICAL | …in/java/org/bukkit/command/defaults/ReloadCommand.java | 75 | return com.google.common.collect.Lists.newArrayList("permissions", "commands"); // Paper | CODE |
| CRITICAL | …ain/java/org/bukkit/event/inventory/InventoryType.java | 198 | this.defaultTitleComponent = net.kyori.adventure.text.Component.text(defaultTitle); // Paper - Adventure | CODE |
| CRITICAL | …/main/java/org/bukkit/event/block/SignChangeEvent.java | 56 | this.adventure$lines.add(net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection( | CODE |
| CRITICAL | …/main/java/org/bukkit/event/block/SignChangeEvent.java | 114 | return this.adventure$lines.stream().map(net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.le | CODE |
| 707 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | …t/java/org/bukkit/metadata/MetadataConversionTest.java | 1 | // Copyright (C) 2011 Ryan Michela | COMMENT |
| LOW | …-api/src/main/java/org/bukkit/inventory/ItemStack.java | 1241 | // * | COMMENT |
| LOW | …-server/src/main/resources/configurations/commands.yml | 1 | # This is the Bukkit commands configuration file for Paper. | COMMENT |
| LOW | paper-server/src/main/resources/configurations/help.yml | 1 | # This is the Bukkit help configuration file for Paper. | COMMENT |
| LOW | paper-server/src/main/resources/configurations/help.yml | 21 | # general-topics: | COMMENT |
| LOW | paper-server/src/main/resources/configurations/help.yml | 41 | # | COMMENT |
| LOW | paper-server/src/main/resources/configurations/help.yml | 61 | # Docs: https://docs.papermc.io/ | COMMENT |
| LOW | …bukkit/craftbukkit/inventory/CraftInventoryPlayer.java | 81 | ServerPlayer player = ((CraftPlayer) this.getHolder()).getHandle(); | COMMENT |
| LOW | …bukkit/craftbukkit/inventory/CraftInventoryPlayer.java | 101 | // The player's hotbar is indexed 0-8 in setItem(). The order goes: 0-8 hotbar, 9-35 normal inventory, 36 boots, | COMMENT |
| LOW | build-data/dev-imports.txt | 1 | # You can use this file to import files from minecraft libraries into the project | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM⚡ | paper-server/src/main/resources/configurations/help.yml | 7 | # This file is divided up into the following parts: | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM⚡ | paper-server/src/main/resources/configurations/help.yml | 15 | # ================================================================ | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW⚡ | paper-server/src/main/resources/configurations/help.yml | 17 | # Set this to true to list the individual command help topics in the master help. | COMMENT |