diff --git a/README.md b/README.md
index 96180d806..d0f4e8ab7 100644
--- a/README.md
+++ b/README.md
@@ -271,6 +271,12 @@ when it exists, otherwise `build/consumers/` inside the repo. `-Plocation=/path/
 changes only the consumer directory. Both tasks copy all four verified platform jars into
 `../PluginOuts/`.
 
+VolmLib is built from source when a `VolmLib` checkout sits beside the repo or in a parent directory
+(`VOLMLIB_DIR` or `-PlocalVolmLibDirectory=<path>` pick another one). Without one, or with
+`-PuseLocalVolmLib=false`, the build uses VolmLib `master-SNAPSHOT` from JitPack. There is no VolmLib
+version to bump. The build logs which VolmLib it used, and every jar records it in
+`META-INF/volmit/volmlib.properties`.
+
 If you need help compiling as a developer or contributor, ask in the Discord.
 
 ## Adapters / modded development
diff --git a/adapters/bukkit/plugin/build.gradle b/adapters/bukkit/plugin/build.gradle
index 38793cded..e3f1b98ed 100644
--- a/adapters/bukkit/plugin/build.gradle
+++ b/adapters/bukkit/plugin/build.gradle
@@ -2,15 +2,11 @@ String apiVersion = providers.gradleProperty('apiVersion').get()
 def mainClass = 'art.arcane.iris.Iris'
 def bootstrapperClass = 'art.arcane.iris.IrisBootstrap'
 
-String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate')
-    .orElse('com.github.VolmitSoftware:VolmLib:master-SNAPSHOT')
-    .get()
-
 dependencies {
     compileOnly(project(':core'))
     compileOnly(libs.lombok)
     annotationProcessor(libs.lombok)
-    compileOnly(volmLibCoordinate) {
+    compileOnly('com.github.VolmitSoftware.VolmLib:volmlib-shared:master-SNAPSHOT') {
         transitive = false
     }
     compileOnly(libs.paper.api)
@@ -23,7 +19,7 @@ dependencies {
     testImplementation(libs.bstats)
     testImplementation(project(':core'))
     testImplementation(testFixtures(project(':core')))
-    testImplementation(volmLibCoordinate) {
+    testImplementation('com.github.VolmitSoftware.VolmLib:volmlib-shared:master-SNAPSHOT') {
         transitive = false
     }
     compileOnly(libs.placeholderApi)
diff --git a/adapters/fabric/build.gradle b/adapters/fabric/build.gradle
index 3936168bd..264e015b1 100644
--- a/adapters/fabric/build.gradle
+++ b/adapters/fabric/build.gradle
@@ -32,11 +32,7 @@ buildscript {
         maven { url = uri('https://jitpack.io') }
     }
     dependencies {
-        Properties libraryProperties = new Properties()
-        file('../../gradle.properties').withInputStream { InputStream stream -> libraryProperties.load(stream) }
-        String libraryCoordinate = providers.gradleProperty('volmLibCoordinate')
-            .getOrElse(libraryProperties.getProperty('volmLibCoordinate'))
-        classpath("com.github.VolmitSoftware.VolmLib:packaging:${libraryCoordinate.tokenize(':').last()}")
+        classpath('com.github.VolmitSoftware.VolmLib:packaging:master-SNAPSHOT')
     }
 }
 
@@ -56,13 +52,13 @@ interface IrisFileOperations {
 IrisFileOperations irisFileOperations = objects.newInstance(IrisFileOperations)
 
 apply from: file('../../gradle/modded-generation-build-revision.gradle')
+apply from: file('../../gradle/volmlib-stamp.gradle')
 
 Properties rootProperties = new Properties()
 file('../../gradle.properties').withInputStream { InputStream stream -> rootProperties.load(stream) }
 String irisVersion = providers.gradleProperty('irisVersion').getOrElse(rootProperties.getProperty('irisVersion', '4.1.2-26.2'))
 String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse(rootProperties.getProperty('minecraftVersion', '26.3'))
 String fabricLoaderVersion = providers.gradleProperty('fabricLoaderVersion').getOrElse(rootProperties.getProperty('fabricLoaderVersion', '0.19.5'))
-String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate').getOrElse(rootProperties.getProperty('volmLibCoordinate', 'com.github.VolmitSoftware:VolmLib:master-SNAPSHOT'))
 Closure<String> irisArtifactName = { String platform, String targetVersion ->
     return "Iris v${project.version} [${platform}] ${targetVersion}.jar"
 }
@@ -180,10 +176,10 @@ dependencies {
     compileOnly(libs.spigot) {
         transitive = false
     }
-    add('bundle', volmLibCoordinate) {
+    add('bundle', 'com.github.VolmitSoftware.VolmLib:volmlib-shared:master-SNAPSHOT') {
         transitive = false
     }
-    add('devBundle', volmLibCoordinate) {
+    add('devBundle', 'com.github.VolmitSoftware.VolmLib:volmlib-shared:master-SNAPSHOT') {
         transitive = false
     }
     add('bundle', libs.zip) {
@@ -286,6 +282,9 @@ tasks.named('shadowJar', ShadowJar).configure {
             spec.delete(staleLoaderJars, legacyLoaderJar)
         }
     }
+    from(tasks.named('generateVolmLibStamp')) {
+        into('META-INF/volmit')
+    }
     archiveFileName.set(irisArtifactName('Fabric', "${minecraftVersion}+${fabricLoaderVersion}"))
     configurations = [project.configurations.named('bundle').get()]
     mergeServiceFiles()
diff --git a/adapters/forge/build.gradle b/adapters/forge/build.gradle
index 8a61c81b3..cae2d8269 100644
--- a/adapters/forge/build.gradle
+++ b/adapters/forge/build.gradle
@@ -32,11 +32,7 @@ buildscript {
         maven { url = uri('https://jitpack.io') }
     }
     dependencies {
-        Properties libraryProperties = new Properties()
-        file('../../gradle.properties').withInputStream { InputStream stream -> libraryProperties.load(stream) }
-        String libraryCoordinate = providers.gradleProperty('volmLibCoordinate')
-            .getOrElse(libraryProperties.getProperty('volmLibCoordinate'))
-        classpath("com.github.VolmitSoftware.VolmLib:packaging:${libraryCoordinate.tokenize(':').last()}")
+        classpath('com.github.VolmitSoftware.VolmLib:packaging:master-SNAPSHOT')
     }
 }
 
@@ -56,13 +52,13 @@ interface IrisFileOperations {
 IrisFileOperations irisFileOperations = objects.newInstance(IrisFileOperations)
 
 apply from: file('../../gradle/modded-generation-build-revision.gradle')
+apply from: file('../../gradle/volmlib-stamp.gradle')
 
 Properties rootProperties = new Properties()
 file('../../gradle.properties').withInputStream { InputStream stream -> rootProperties.load(stream) }
 String irisVersion = providers.gradleProperty('irisVersion').getOrElse(rootProperties.getProperty('irisVersion', '4.1.2-26.2'))
 String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse(rootProperties.getProperty('minecraftVersion', '26.3'))
 String forgeVersion = providers.gradleProperty('forgeVersion').getOrElse(rootProperties.getProperty('forgeVersion', '26.3-66.0.8'))
-String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate').getOrElse(rootProperties.getProperty('volmLibCoordinate', 'com.github.VolmitSoftware:VolmLib:master-SNAPSHOT'))
 Closure<String> loaderDisplayVersion = { String loaderVersion ->
     String coordinatePrefix = "${minecraftVersion}-"
     if (loaderVersion.startsWith(coordinatePrefix)) {
@@ -173,13 +169,13 @@ dependencies {
     compileOnly(libs.spigot) {
         transitive = false
     }
-    add('bundle', volmLibCoordinate) {
+    add('bundle', 'com.github.VolmitSoftware.VolmLib:volmlib-shared:master-SNAPSHOT') {
         transitive = false
     }
-    add('devBundle', volmLibCoordinate) {
+    add('devBundle', 'com.github.VolmitSoftware.VolmLib:volmlib-shared:master-SNAPSHOT') {
         transitive = false
     }
-    add('runBundle', volmLibCoordinate) {
+    add('runBundle', 'com.github.VolmitSoftware.VolmLib:volmlib-shared:master-SNAPSHOT') {
         transitive = false
     }
     add('bundle', libs.zip) {
@@ -271,6 +267,9 @@ tasks.named('shadowJar', ShadowJar).configure {
             spec.delete(staleLoaderJars, legacyLoaderJar)
         }
     }
+    from(tasks.named('generateVolmLibStamp')) {
+        into('META-INF/volmit')
+    }
     manifest {
         // FML 26.3 has no TOML mixin handling at all (ModFileParser reads neither [[mixins]] nor
         // accessTransformers on Forge). This manifest attribute is the only registration mechanism;
diff --git a/adapters/neoforge/build.gradle b/adapters/neoforge/build.gradle
index 5b8f1eb86..0ffff3760 100644
--- a/adapters/neoforge/build.gradle
+++ b/adapters/neoforge/build.gradle
@@ -32,11 +32,7 @@ buildscript {
         maven { url = uri('https://jitpack.io') }
     }
     dependencies {
-        Properties libraryProperties = new Properties()
-        file('../../gradle.properties').withInputStream { InputStream stream -> libraryProperties.load(stream) }
-        String libraryCoordinate = providers.gradleProperty('volmLibCoordinate')
-            .getOrElse(libraryProperties.getProperty('volmLibCoordinate'))
-        classpath("com.github.VolmitSoftware.VolmLib:packaging:${libraryCoordinate.tokenize(':').last()}")
+        classpath('com.github.VolmitSoftware.VolmLib:packaging:master-SNAPSHOT')
     }
 }
 
@@ -56,13 +52,13 @@ interface IrisFileOperations {
 IrisFileOperations irisFileOperations = objects.newInstance(IrisFileOperations)
 
 apply from: file('../../gradle/modded-generation-build-revision.gradle')
+apply from: file('../../gradle/volmlib-stamp.gradle')
 
 Properties rootProperties = new Properties()
 file('../../gradle.properties').withInputStream { InputStream stream -> rootProperties.load(stream) }
 String irisVersion = providers.gradleProperty('irisVersion').getOrElse(rootProperties.getProperty('irisVersion', '4.1.2-26.2'))
 String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse(rootProperties.getProperty('minecraftVersion', '26.3'))
 String neoForgeVersion = providers.gradleProperty('neoForgeVersion').getOrElse(rootProperties.getProperty('neoForgeVersion', '26.3.0.33-beta'))
-String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate').getOrElse(rootProperties.getProperty('volmLibCoordinate', 'com.github.VolmitSoftware:VolmLib:master-SNAPSHOT'))
 Closure<String> irisArtifactName = { String platform, String targetVersion ->
     return "Iris v${project.version} [${platform}] ${targetVersion}.jar"
 }
@@ -152,10 +148,10 @@ dependencies {
     compileOnly(libs.spigot) {
         transitive = false
     }
-    add('bundle', volmLibCoordinate) {
+    add('bundle', 'com.github.VolmitSoftware.VolmLib:volmlib-shared:master-SNAPSHOT') {
         transitive = false
     }
-    add('devBundle', volmLibCoordinate) {
+    add('devBundle', 'com.github.VolmitSoftware.VolmLib:volmlib-shared:master-SNAPSHOT') {
         transitive = false
     }
     add('bundle', libs.zip) {
@@ -274,6 +270,9 @@ tasks.named('shadowJar', ShadowJar).configure {
             spec.delete(staleLoaderJars, legacyLoaderJar)
         }
     }
+    from(tasks.named('generateVolmLibStamp')) {
+        into('META-INF/volmit')
+    }
     archiveFileName.set(irisArtifactName('NeoForge', "${minecraftVersion}+${neoForgeVersion}"))
     configurations = [project.configurations.named('bundle').get()]
     from(sourceSets.main.output)
diff --git a/build.gradle b/build.gradle
index b4269ebad..1295ab47b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -43,8 +43,7 @@ buildscript {
         maven { url = uri('https://jitpack.io') }
     }
     dependencies {
-        String volmLibRevision = providers.gradleProperty('volmLibCoordinate').get().tokenize(':').last()
-        classpath("com.github.VolmitSoftware.VolmLib:packaging:${volmLibRevision}")
+        classpath('com.github.VolmitSoftware.VolmLib:packaging:master-SNAPSHOT')
     }
 }
 
@@ -55,6 +54,7 @@ plugins {
 
 apply plugin: 'art.arcane.volmit-packaging'
 apply from: file('gradle/runtime-relocations.gradle')
+apply from: file('gradle/volmlib-stamp.gradle')
 
 interface IrisFileOperations {
     @Inject
@@ -76,15 +76,9 @@ String bukkitMinecraftRange = providers.gradleProperty('bukkitMinecraftRange').g
 String fabricLoaderVersion = providers.gradleProperty('fabricLoaderVersion').getOrElse('0.19.5')
 String forgeVersion = providers.gradleProperty('forgeVersion').getOrElse('26.3-66.0.8')
 String neoForgeVersion = providers.gradleProperty('neoForgeVersion').getOrElse('26.3.0.33-beta')
-String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate')
-    .orElse('com.github.VolmitSoftware:VolmLib:master-SNAPSHOT')
-    .get()
-String useLocalVolmLib = providers.gradleProperty('useLocalVolmLib').getOrElse('true')
-String localVolmLibDirectory = providers.gradleProperty('localVolmLibDirectory').getOrNull()
-boolean useMavenLocal = providers.gradleProperty('useMavenLocal')
-    .orElse(useLocalVolmLib.equalsIgnoreCase('true') ? 'false' : 'true')
-    .map { String value -> value.equalsIgnoreCase('true') }
-    .get()
+String volmLibShared = 'com.github.VolmitSoftware.VolmLib:volmlib-shared:master-SNAPSHOT'
+File localVolmLibCheckout = (File) gradle.extensions.extraProperties.get('volmLibDirectory')
+Map<String, String> volmLibStamp = (Map<String, String>) gradle.extensions.extraProperties.get('volmLibStamp')
 Closure<String> loaderDisplayVersion = { String loaderVersion ->
     String coordinatePrefix = "${minecraftVersion}-"
     if (loaderVersion.startsWith(coordinatePrefix)) {
@@ -153,11 +147,11 @@ nmsBindings.each { String key ->
         }
 
         dependencies {
-            implementation("com.github.VolmitSoftware.VolmLib:native-${key}:${volmLibCoordinate.tokenize(':').last()}") {
+            implementation("com.github.VolmitSoftware.VolmLib:native-${key}:master-SNAPSHOT") {
                 transitive = false
             }
             compileOnly(project(':core'))
-            compileOnly(volmLibCoordinate) {
+            compileOnly(volmLibShared) {
                 transitive = false
             }
             compileOnly(rootProject.libs.annotations)
@@ -169,10 +163,10 @@ nmsBindings.each { String key ->
             }
             testImplementation(project(':core'))
             testImplementation(testFixtures(project(':core')))
-            testImplementation("com.github.VolmitSoftware.VolmLib:native-common:${volmLibCoordinate.tokenize(':').last()}") {
+            testImplementation('com.github.VolmitSoftware.VolmLib:native-common:master-SNAPSHOT') {
                 transitive = false
             }
-            testCompileOnly(volmLibCoordinate) {
+            testCompileOnly(volmLibShared) {
                 transitive = false
             }
             testRuntimeOnly(project(':core'))
@@ -183,49 +177,32 @@ nmsBindings.each { String key ->
 
 def included = configurations.create('included')
 def nativeRuntime = configurations.create('nativeRuntime')
-def publishedNativeRuntime = configurations.create('publishedNativeRuntime') {
-    canBeConsumed = false
-    transitive = false
-    resolutionStrategy.useGlobalDependencySubstitutionRules = false
-}
-repositories.configureEach { repository ->
-    if (repository.name != 'publishedNativeProviders') {
-        repository.content { notForConfigurations('publishedNativeRuntime') }
-    }
-}
-repositories.maven {
-    name = 'publishedNativeProviders'
-    url = uri('https://jitpack.io/')
-    content {
-        onlyForConfigurations('publishedNativeRuntime')
-        includeGroup('com.github.VolmitSoftware.VolmLib')
-    }
-}
 def nativeRuntimeOutput = layout.buildDirectory.dir('generated/native-runtime')
 def nativeRuntimeRules = layout.buildDirectory.file('generated/native-runtime-keep.pro')
 List<String> nativeRuntimeModules = ['native-common'] + nmsBindings.collect { String adapter -> 'native-' + adapter }
 dependencies {
     nativeRuntimeModules.each { String module ->
-        add('nativeRuntime', "com.github.VolmitSoftware.VolmLib:${module}:${volmLibCoordinate.tokenize(':').last()}") {
+        add('nativeRuntime', "com.github.VolmitSoftware.VolmLib:${module}:master-SNAPSHOT") {
             transitive = false
         }
-        add('publishedNativeRuntime', "com.github.VolmitSoftware.VolmLib:${module}:${volmLibCoordinate.tokenize(':').last()}")
     }
 }
+// The natives PackedJar embeds are the single source for the runtime manifest, the reachability roots and
+// the ProGuard keep rules, so the shrinker can never prune against a different provider build.
+Closure<Map<String, File>> embeddedNatives = { ->
+    Map<ComponentIdentifier, File> resolved = new LinkedHashMap<>()
+    nativeRuntime.incoming.artifacts.artifacts.each { artifact ->
+        resolved.put(artifact.id.componentIdentifier, artifact.file)
+    }
+    return PackedJar.resolveNativeArtifacts(resolved)
+}
 def generateNativeRuntime = tasks.register('generateNativeRuntime') {
-    inputs.files(publishedNativeRuntime)
-    inputs.property('version', volmLibCoordinate.tokenize(':').last())
-    inputs.property('adapters', nmsBindings)
+    inputs.files(nativeRuntime)
+    inputs.property('modules', nativeRuntimeModules)
     outputs.dir(nativeRuntimeOutput)
     outputs.file(nativeRuntimeRules)
     doLast {
-        Map<ComponentIdentifier, File> resolved = new LinkedHashMap<>()
-        publishedNativeRuntime.incoming.artifacts.artifacts.each { artifact ->
-            resolved.put(artifact.id.componentIdentifier, artifact.file)
-        }
-        Map<String, File> artifacts = NativeRuntimeArtifacts.publishedArtifacts(resolved,
-            nativeRuntimeModules, volmLibCoordinate.tokenize(':').last())
-        NativeRuntimeArtifacts.generate(artifacts, volmLibCoordinate.tokenize(':').last(),
+        NativeRuntimeArtifacts.generate(embeddedNatives(), nativeRuntimeModules,
             nativeRuntimeOutput.get().asFile, nativeRuntimeRules.get().asFile)
     }
 }
@@ -240,6 +217,9 @@ tasks.named('jar', Jar).configure {
     inputs.files(included)
     dependsOn(generateNativeRuntime)
     from(nativeRuntimeOutput)
+    from(tasks.named('generateVolmLibStamp')) {
+        into('META-INF/volmit')
+    }
     duplicatesStrategy = DuplicatesStrategy.EXCLUDE
     includeEmptyDirs = false
     from(jarJar)
@@ -312,31 +292,6 @@ tasks.register('buildBukkit', Copy) {
 // task therefore has to carry the full inventory of what those builds read: every shared source tree,
 // every build script and version file they load, and the local VolmLib checkout when the composite
 // resolves one. Anything missing from that list publishes a stale jar.
-Closure<File> resolveLocalVolmLibDirectory = { ->
-    String configured = localVolmLibDirectory != null && !localVolmLibDirectory.isBlank()
-        ? localVolmLibDirectory
-        : System.getenv('VOLMLIB_DIR')
-    if (configured != null && !configured.isBlank()) {
-        File configuredDirectory = new File(configured)
-        if (!configuredDirectory.isAbsolute()) {
-            configuredDirectory = new File(rootDir, configured)
-        }
-        return configuredDirectory.isDirectory() ? configuredDirectory : null
-    }
-
-    File current = rootDir
-    while (current != null) {
-        File candidate = new File(current, 'VolmLib')
-        if (new File(candidate, 'settings.gradle').isFile() || new File(candidate, 'settings.gradle.kts').isFile()) {
-            return candidate
-        }
-
-        current = current.parentFile
-    }
-
-    return null
-}
-
 List<Object> moddedSharedInputs = []
 [
     'adapters/modded-common/src',
@@ -353,11 +308,11 @@ List<Object> moddedSharedInputs = []
     'lombok.config',
     'gradle/libs.versions.toml',
     'gradle/volmlib-resolution.settings.gradle',
+    'gradle/volmlib-stamp.gradle',
     'gradle/generation-build-revision.gradle',
     'gradle/modded-generation-build-revision.gradle',
     'gradle/native-minecraft-sources.gradle'
 ].each { String path -> moddedSharedInputs.add(layout.projectDirectory.file(path).asFile) }
-File localVolmLibCheckout = useLocalVolmLib.equalsIgnoreCase('true') ? resolveLocalVolmLibDirectory() : null
 if (localVolmLibCheckout != null) {
     moddedSharedInputs.add(fileTree(localVolmLibCheckout) {
         include('shared/src/main/**', 'native-api/src/main/**', 'native-terrain-api/src/main/**',
@@ -377,8 +332,7 @@ Closure<Void> declareModdedJarIo = { Exec task, String adapter, String artifactN
         layout.projectDirectory.file("adapters/${adapter}/settings.gradle").asFile
     ).withPropertyName('adapterSources')
     versions.each { String key, String value -> task.inputs.property(key, value) }
-    task.inputs.property('useLocalVolmLib', useLocalVolmLib)
-    task.inputs.property('volmLibCoordinate', volmLibCoordinate)
+    task.inputs.property('volmLibStamp', volmLibStamp)
     task.outputs.file(layout.projectDirectory.file("adapters/${adapter}/build/libs/${artifactName}"))
     return null
 }
@@ -394,8 +348,7 @@ tasks.register('fabricJar', Exec) {
         "-PirisVersion=${project.version}",
         "-PminecraftVersion=${minecraftVersion}",
         "-PfabricLoaderVersion=${fabricLoaderVersion}",
-        "-PuseLocalVolmLib=${useLocalVolmLib}",
-        "-PvolmLibCoordinate=${volmLibCoordinate}"
+        "-PuseLocalVolmLib=${localVolmLibCheckout != null}"
     ]
     if (localVolmLibCheckout != null) {
         environment('ORG_GRADLE_PROJECT_localVolmLibDirectory', localVolmLibCheckout.absolutePath)
@@ -432,8 +385,7 @@ tasks.register('forgeJar', Exec) {
         "-PirisVersion=${project.version}",
         "-PminecraftVersion=${minecraftVersion}",
         "-PforgeVersion=${forgeVersion}",
-        "-PuseLocalVolmLib=${useLocalVolmLib}",
-        "-PvolmLibCoordinate=${volmLibCoordinate}"
+        "-PuseLocalVolmLib=${localVolmLibCheckout != null}"
     ]
     if (localVolmLibCheckout != null) {
         environment('ORG_GRADLE_PROJECT_localVolmLibDirectory', localVolmLibCheckout.absolutePath)
@@ -470,8 +422,7 @@ tasks.register('neoforgeJar', Exec) {
         "-PirisVersion=${project.version}",
         "-PminecraftVersion=${minecraftVersion}",
         "-PneoForgeVersion=${neoForgeVersion}",
-        "-PuseLocalVolmLib=${useLocalVolmLib}",
-        "-PvolmLibCoordinate=${volmLibCoordinate}"
+        "-PuseLocalVolmLib=${localVolmLibCheckout != null}"
     ]
     if (localVolmLibCheckout != null) {
         environment('ORG_GRADLE_PROJECT_localVolmLibDirectory', localVolmLibCheckout.absolutePath)
@@ -528,8 +479,7 @@ tasks.register('moddedTest', Exec) {
         "-PirisVersion=${project.version}",
         "-PminecraftVersion=${minecraftVersion}",
         "-PfabricLoaderVersion=${fabricLoaderVersion}",
-        "-PuseLocalVolmLib=${useLocalVolmLib}",
-        "-PvolmLibCoordinate=${volmLibCoordinate}"
+        "-PuseLocalVolmLib=${localVolmLibCheckout != null}"
     ]
     if (localVolmLibCheckout != null) {
         environment('ORG_GRADLE_PROJECT_localVolmLibDirectory', localVolmLibCheckout.absolutePath)
@@ -545,8 +495,7 @@ tasks.register('moddedTest', Exec) {
     inputs.property('irisVersion', project.version.toString())
     inputs.property('minecraftVersion', minecraftVersion)
     inputs.property('fabricLoaderVersion', fabricLoaderVersion)
-    inputs.property('useLocalVolmLib', useLocalVolmLib)
-    inputs.property('volmLibCoordinate', volmLibCoordinate)
+    inputs.property('volmLibStamp', volmLibStamp)
     outputs.dir(layout.projectDirectory.dir('adapters/fabric/build/test-results/test'))
     mustRunAfter(tasks.named('jar'))
     mustRunAfter(project(':core').tasks.named('check'))
@@ -585,6 +534,7 @@ List<String> commonModdedArtifactEntries = [
     'native/windows-x86_64/jlibdeflate.dll',
     'META-INF/iris/generation-kernels/catalog.tsv',
     'META-INF/iris/generation-kernels/abi-1.revision',
+    'META-INF/volmit/volmlib.properties',
     'META-INF/services/art.arcane.iris.localization.IrisMessageContributor',
     'art/arcane/iris/generation/runtime/IrisEngine.class',
     'art/arcane/iris/pack/datapack/DataVersion.class',
@@ -700,6 +650,7 @@ List<String> requiredBukkitArtifactEntries = [
     'slimjar.dat',
     'slimjar-resolutions.dat',
     'META-INF/iris/native-runtime.properties',
+    'META-INF/volmit/volmlib.properties',
     'iris-language-source.properties',
     'agent.jar',
     'art/arcane/iris/Iris.class',
@@ -725,6 +676,7 @@ tasks.register('verifyBukkitArtifact') {
     dependsOn('jar')
     File artifact = bukkitArtifact
     inputs.file(artifact)
+    inputs.files(nativeRuntime)
     inputs.files(commandHandlerSources)
     inputs.files(mantleComponentSources)
     doLast {
@@ -733,7 +685,7 @@ tasks.register('verifyBukkitArtifact') {
                 requiredBukkitArtifactEntries,
                 16,
                 runtimeDownloadedPrefixes)
-        NativeRuntimeArtifacts.verify(artifact, nmsBindings, volmLibCoordinate.tokenize(':').last())
+        NativeRuntimeArtifacts.verify(artifact, nativeRuntimeModules, embeddedNatives())
         logger.lifecycle("Verified ${artifact.name} packaging and class reference graph")
     }
 }
@@ -819,11 +771,6 @@ tasks.register('irisDev', Copy) {
     dependsOn(':core:javadocJar')
 }
 
-configurations.configureEach {
-    resolutionStrategy.cacheChangingModulesFor(0, 'seconds')
-    resolutionStrategy.cacheDynamicVersionsFor(0, 'seconds')
-}
-
 allprojects {
     apply plugin: 'java'
 
@@ -834,9 +781,6 @@ allprojects {
     }
 
     repositories {
-        if (useMavenLocal) {
-            mavenLocal()
-        }
         mavenCentral()
         maven { url = uri('https://repo.papermc.io/repository/maven-public/') }
         maven { url = uri('https://repo.codemc.org/repository/maven-public/') }
@@ -990,7 +934,7 @@ project(':adapters:bukkit:nms:v26_3_R1') {
         canBeResolved = true
     }
     dependencies.add(headlessNativeSources.name,
-            "com.github.VolmitSoftware.VolmLib:native-minecraft26_2-sources:${volmLibCoordinate.tokenize(':').last()}")
+            'com.github.VolmitSoftware.VolmLib:native-minecraft26_2-sources:master-SNAPSHOT')
     List<String> headlessNativeTypes = ['ModdedBlockState', 'ModdedBiome', 'NativeBlockProperties', 'NativeBlockResolver',
             'NativeBlockFaces', 'NativeStateRotator', 'NativeStateMerger',
             'NativeRegistryAccess', 'ModdedItem', 'ModdedEntityType', 'NativeTileReader', 'NativeTileData']
@@ -1016,10 +960,10 @@ project(':adapters:bukkit:nms:v26_3_R1') {
     dependencies {
         offlineImplementation(project(':probe'))
         offlineImplementation(project(':core'))
-        offlineImplementation("com.github.VolmitSoftware.VolmLib:native-common:${volmLibCoordinate.tokenize(':').last()}") {
+        offlineImplementation('com.github.VolmitSoftware.VolmLib:native-common:master-SNAPSHOT') {
             transitive = false
         }
-        offlineImplementation(volmLibCoordinate) {
+        offlineImplementation(volmLibShared) {
             transitive = false
         }
     }
@@ -1132,14 +1076,11 @@ commands:
 }
 
 tasks.withType(PackedJar).configureEach {
-    nativeManifestPath.set('META-INF/iris/native-runtime.properties')
-    nativeResourceDirectory.set('META-INF/iris/native/')
-    dependsOn(tasks.named('verifyBukkitArtifact'), configurations.nativeRuntime)
-    nativeArtifacts.set(providers.provider {
-        Map<ComponentIdentifier, File> resolved = new LinkedHashMap<>()
-        configurations.nativeRuntime.incoming.artifacts.artifacts.each { artifact ->
-            resolved.put(artifact.id.componentIdentifier, artifact.file)
-        }
-        PackedJar.resolveNativeArtifacts(resolved)
-    })
+    nativeManifestPath.set(NativeRuntimeArtifacts.MANIFEST)
+    nativeResourceDirectory.set(NativeRuntimeArtifacts.RESOURCES)
+    dependsOn(tasks.named('verifyBukkitArtifact'), nativeRuntime)
+    nativeArtifacts.set(providers.provider { embeddedNatives() })
+    doLast { PackedJar task ->
+        NativeRuntimeArtifacts.verifyPacked(task.outputJar.get().asFile, nativeRuntimeModules, embeddedNatives())
+    }
 }
diff --git a/buildSrc/build.gradle b/buildSrc/build.gradle
index 67f86ee32..6aa6169ff 100644
--- a/buildSrc/build.gradle
+++ b/buildSrc/build.gradle
@@ -32,6 +32,7 @@ dependencies {
     implementation(gradleApi())
     implementation('org.ow2.asm:asm:9.10.1')
     implementation('org.apache.commons:commons-compress:1.28.0')
+    implementation('org.tukaani:xz:1.10')
     implementation('io.papermc.paperweight:paperweight-userdev:2.0.0-beta.21')
     testImplementation('junit:junit:4.13.2')
 }
diff --git a/buildSrc/src/main/java/NativeRuntimeArtifacts.java b/buildSrc/src/main/java/NativeRuntimeArtifacts.java
index e49bba3ed..f5aa0aaf5 100644
--- a/buildSrc/src/main/java/NativeRuntimeArtifacts.java
+++ b/buildSrc/src/main/java/NativeRuntimeArtifacts.java
@@ -1,7 +1,7 @@
 import org.gradle.api.GradleException;
-import org.gradle.api.artifacts.component.ComponentIdentifier;
-import org.gradle.api.artifacts.component.ModuleComponentIdentifier;
+import org.tukaani.xz.XZInputStream;
 
+import java.io.ByteArrayInputStream;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
@@ -11,6 +11,7 @@ import java.nio.file.Path;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Enumeration;
 import java.util.HexFormat;
 import java.util.List;
@@ -21,46 +22,32 @@ import java.util.TreeMap;
 import java.util.TreeSet;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
 
 public final class NativeRuntimeArtifacts {
     public static final String MANIFEST = "META-INF/iris/native-runtime.properties";
+    public static final String RESOURCES = "META-INF/iris/native/";
+    private static final String PAYLOAD = "META-INF/volmit/runtime.jar.xz";
     private static final String GROUP = "com.github.VolmitSoftware.VolmLib";
     private static final String NATIVE = "art/arcane/volmlib/nativelib/";
 
     private NativeRuntimeArtifacts() {
     }
 
-    public static Map<String, File> publishedArtifacts(Map<ComponentIdentifier, File> resolved,
-                                                       List<String> modules, String version) {
-        Map<String, File> artifacts = new TreeMap<>();
-        for (Map.Entry<ComponentIdentifier, File> entry : resolved.entrySet()) {
-            if (!(entry.getKey() instanceof ModuleComponentIdentifier component)
-                    || !GROUP.equals(component.getGroup()) || !version.equals(component.getVersion())
-                    || !modules.contains(component.getModule())) {
-                throw new GradleException("Native runtime providers must resolve to published coordinates at "
-                        + version + ": " + entry.getKey().getDisplayName());
-            }
-            if (artifacts.put(component.getModule(), entry.getValue()) != null) {
-                throw new GradleException("Duplicate native runtime provider: " + component.getModule());
-            }
-        }
-        if (!artifacts.keySet().equals(new TreeSet<>(modules))) {
-            throw new GradleException("Published native runtime providers differ: " + artifacts.keySet()
-                    + "; expected " + modules);
-        }
-        return artifacts;
-    }
-
-    public static void generate(Map<String, File> artifacts, String version, File output, File rules) throws IOException {
+    public static void generate(Map<String, File> natives, List<String> modules, File output, File rules) throws IOException {
+        requireModules(natives, modules);
+        Map<String, File> providers = new TreeMap<>(natives);
         List<String> manifest = new ArrayList<>();
-        manifest.add("modules=" + String.join(",", artifacts.keySet()));
-        manifest.add("repository=https://jitpack.io/");
+        manifest.add("modules=" + String.join(",", providers.keySet()));
+        manifest.add("storage=embedded");
         Set<String> retained = new TreeSet<>();
-        for (Map.Entry<String, File> artifact : artifacts.entrySet()) {
-            String module = artifact.getKey();
-            manifest.add(module + ".coordinate=" + GROUP + ":" + module + ":" + version);
-            manifest.add(module + ".sha256=" + digest(artifact.getValue()));
-            try (JarFile jar = new JarFile(artifact.getValue())) {
+        for (Map.Entry<String, File> provider : providers.entrySet()) {
+            String module = provider.getKey();
+            String digest = digest(Files.readAllBytes(provider.getValue().toPath()));
+            manifest.add(module + ".coordinate=" + GROUP + ":" + module + ":embedded-" + digest);
+            manifest.add(module + ".sha256=" + digest);
+            try (JarFile jar = new JarFile(provider.getValue())) {
                 Enumeration<JarEntry> entries = jar.entries();
                 while (entries.hasMoreElements()) {
                     JarEntry entry = entries.nextElement();
@@ -92,31 +79,15 @@ public final class NativeRuntimeArtifacts {
         Files.write(rules.toPath(), keep, StandardCharsets.UTF_8);
     }
 
-    public static void verify(File artifact, List<String> adapters, String version) throws IOException {
+    public static void verify(File artifact, List<String> modules, Map<String, File> natives) throws IOException {
+        requireModules(natives, modules);
         try (JarFile jar = new JarFile(artifact)) {
             JarEntry entry = jar.getJarEntry(MANIFEST);
             if (entry == null) {
                 throw new GradleException("Missing native runtime dependency manifest");
             }
-            Properties manifest = new Properties();
             try (InputStream input = jar.getInputStream(entry)) {
-                manifest.load(input);
-            }
-            Set<String> expected = new TreeSet<>();
-            expected.add("native-common");
-            for (String adapter : adapters) {
-                expected.add("native-" + adapter);
-            }
-            Set<String> actual = new TreeSet<>(List.of(manifest.getProperty("modules", "").split(",")));
-            if (!expected.equals(actual)) {
-                throw new GradleException("Native dependency modules differ: " + actual + "; expected " + expected);
-            }
-            for (String module : expected) {
-                String coordinate = GROUP + ":" + module + ":" + version;
-                if (!coordinate.equals(manifest.getProperty(module + ".coordinate"))
-                        || !manifest.getProperty(module + ".sha256", "").matches("[0-9a-f]{64}")) {
-                    throw new GradleException("Invalid native runtime dependency: " + module);
-                }
+                verifyManifest(input.readAllBytes(), natives);
             }
             Enumeration<JarEntry> entries = jar.entries();
             while (entries.hasMoreElements()) {
@@ -128,6 +99,82 @@ public final class NativeRuntimeArtifacts {
         }
     }
 
+    public static void verifyPacked(File artifact, List<String> modules, Map<String, File> natives) throws IOException {
+        requireModules(natives, modules);
+        Map<String, byte[]> contents;
+        try (JarFile jar = new JarFile(artifact)) {
+            JarEntry payload = jar.getJarEntry(PAYLOAD);
+            if (payload == null) {
+                contents = read(Files.newInputStream(artifact.toPath()));
+            } else {
+                try (InputStream input = new XZInputStream(jar.getInputStream(payload))) {
+                    contents = read(new ByteArrayInputStream(input.readAllBytes()));
+                }
+                JarEntry outer = jar.getJarEntry(MANIFEST);
+                byte[] embedded = contents.get(MANIFEST);
+                if (outer != null && embedded != null) {
+                    try (InputStream input = jar.getInputStream(outer)) {
+                        if (!Arrays.equals(input.readAllBytes(), embedded)) {
+                            throw new GradleException("Packed native runtime manifests differ");
+                        }
+                    }
+                }
+            }
+        }
+        byte[] manifest = contents.get(MANIFEST);
+        if (manifest == null) {
+            throw new GradleException("Missing native runtime dependency manifest");
+        }
+        verifyManifest(manifest, natives);
+        for (String module : natives.keySet()) {
+            byte[] provider = contents.get(RESOURCES + module + ".jar");
+            if (provider == null) {
+                throw new GradleException("Missing embedded native provider: " + module);
+            }
+            if (!digest(provider).equals(digest(Files.readAllBytes(natives.get(module).toPath())))) {
+                throw new GradleException("Embedded native provider differs from the resolved build: " + module);
+            }
+        }
+    }
+
+    private static void verifyManifest(byte[] bytes, Map<String, File> natives) throws IOException {
+        Properties manifest = new Properties();
+        manifest.load(new ByteArrayInputStream(bytes));
+        Set<String> actual = new TreeSet<>(List.of(manifest.getProperty("modules", "").split(",")));
+        if (!natives.keySet().equals(actual)) {
+            throw new GradleException("Native dependency modules differ: " + actual + "; expected " + natives.keySet());
+        }
+        if (!"embedded".equals(manifest.getProperty("storage"))) {
+            throw new GradleException("Native runtime providers must be embedded: " + manifest.getProperty("storage"));
+        }
+        for (Map.Entry<String, File> provider : natives.entrySet()) {
+            String module = provider.getKey();
+            String digest = digest(Files.readAllBytes(provider.getValue().toPath()));
+            if (!digest.equals(manifest.getProperty(module + ".sha256"))
+                    || !(GROUP + ":" + module + ":embedded-" + digest).equals(manifest.getProperty(module + ".coordinate"))) {
+                throw new GradleException("Native runtime manifest does not describe the embedded provider: " + module);
+            }
+        }
+    }
+
+    private static void requireModules(Map<String, File> natives, List<String> modules) {
+        if (!natives.keySet().equals(new TreeSet<>(modules))) {
+            throw new GradleException("Embedded native providers differ: " + natives.keySet() + "; expected " + modules);
+        }
+    }
+
+    private static Map<String, byte[]> read(InputStream source) throws IOException {
+        Map<String, byte[]> contents = new TreeMap<>();
+        try (ZipInputStream archive = new ZipInputStream(source)) {
+            for (ZipEntry entry = archive.getNextEntry(); entry != null; entry = archive.getNextEntry()) {
+                if (!entry.isDirectory()) {
+                    contents.put(entry.getName(), archive.readAllBytes());
+                }
+            }
+        }
+        return contents;
+    }
+
     private static boolean implementation(String name) {
         if (!name.startsWith(NATIVE)) {
             return false;
@@ -137,9 +184,9 @@ public final class NativeRuntimeArtifacts {
                 || relative.matches("v[0-9_]+R[0-9]+/.*");
     }
 
-    private static String digest(File file) throws IOException {
+    private static String digest(byte[] bytes) {
         try {
-            return HexFormat.of().formatHex(MessageDigest.getInstance("SHA-256").digest(Files.readAllBytes(file.toPath())));
+            return HexFormat.of().formatHex(MessageDigest.getInstance("SHA-256").digest(bytes));
         } catch (NoSuchAlgorithmException exception) {
             throw new IllegalStateException(exception);
         }
diff --git a/buildSrc/src/test/java/NativeRuntimeArtifactsTest.java b/buildSrc/src/test/java/NativeRuntimeArtifactsTest.java
index 52d9df462..fb4afa76b 100644
--- a/buildSrc/src/test/java/NativeRuntimeArtifactsTest.java
+++ b/buildSrc/src/test/java/NativeRuntimeArtifactsTest.java
@@ -1,12 +1,15 @@
 import org.gradle.api.GradleException;
-import org.gradle.api.artifacts.ModuleIdentifier;
-import org.gradle.api.artifacts.component.ComponentIdentifier;
-import org.gradle.api.artifacts.component.ModuleComponentIdentifier;
+import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.Opcodes;
+import org.tukaani.xz.LZMA2Options;
+import org.tukaani.xz.XZOutputStream;
 
+import java.io.ByteArrayOutputStream;
 import java.io.File;
+import java.io.IOException;
 import java.io.Reader;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -15,122 +18,149 @@ import java.util.HexFormat;
 import java.util.List;
 import java.util.Map;
 import java.util.Properties;
+import java.util.TreeMap;
 import java.util.jar.JarEntry;
 import java.util.jar.JarOutputStream;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
 
 public class NativeRuntimeArtifactsTest {
-    @Test
-    public void acceptsOnlyRequestedPublishedCoordinates() {
-        File common = new File("common.jar");
-        File provider = new File("provider.jar");
-        Map<ComponentIdentifier, File> resolved = Map.of(
-                module("native-common", "revision"), common,
-                module("native-v26_2_R1", "revision"), provider);
-        assertEquals(Map.of("native-common", common, "native-v26_2_R1", provider),
-                NativeRuntimeArtifacts.publishedArtifacts(resolved,
-                        List.of("native-common", "native-v26_2_R1"), "revision"));
-    }
+    private static final List<String> MODULES = List.of("native-common", "native-v26_2_R1");
+
+    @Rule
+    public TemporaryFolder temporary = new TemporaryFolder();
 
     @Test
-    public void rejectsCompositeProjectArtifacts() {
-        ComponentIdentifier project = () -> "project :VolmLib:native-common";
-        assertThrows(GradleException.class, () -> NativeRuntimeArtifacts.publishedArtifacts(
-                Map.of(project, new File("native-common-local-SNAPSHOT.jar")), List.of("native-common"), "revision"));
-    }
-
-    @Test
-    public void rejectsUnexpectedCoordinates() {
-        List<ComponentIdentifier> invalid = List.of(
-                new PublishedModule("other.group", "native-common", "revision"),
-                module("native-common", "other-revision"),
-                module("native-v26_3_R1", "revision"));
-        for (ComponentIdentifier component : invalid) {
-            assertThrows(GradleException.class, () -> NativeRuntimeArtifacts.publishedArtifacts(
-                    Map.of(component, new File("provider.jar")), List.of("native-common"), "revision"));
-        }
-    }
-
-    @Test
-    public void rejectsMissingProviders() {
-        assertThrows(GradleException.class, () -> NativeRuntimeArtifacts.publishedArtifacts(
-                Map.of(module("native-common", "revision"), new File("common.jar")),
-                List.of("native-common", "native-v26_2_R1"), "revision"));
-    }
-
-    @Test
-    public void recordsExactDependenciesAndRetainsSharedProviderReferences() throws Exception {
-        Path directory = Files.createTempDirectory("native-artifacts");
-        File provider = directory.resolve("provider.jar").toFile();
-        ClassWriter writer = new ClassWriter(0);
-        writer.visit(Opcodes.V17, Opcodes.ACC_PUBLIC, "art/arcane/volmlib/nativelib/v26_2_R1/terrain/Provider", null,
-                "art/arcane/volmlib/util/collection/KList", null);
-        writer.visitEnd();
-        try (JarOutputStream jar = new JarOutputStream(Files.newOutputStream(provider.toPath()))) {
-            jar.putNextEntry(new JarEntry("art/arcane/volmlib/nativelib/v26_2_R1/terrain/Provider.class"));
-            jar.write(writer.toByteArray());
-            jar.closeEntry();
-        }
-        File rules = directory.resolve("keep.pro").toFile();
-        NativeRuntimeArtifacts.generate(Map.of("native-common", provider, "native-v26_2_R1", provider),
-                "revision", directory.toFile(), rules);
+    public void describesTheEmbeddedProvidersAndRetainsTheirSharedReferences() throws Exception {
+        Map<String, File> natives = natives();
+        File output = temporary.newFolder("generated");
+        File rules = new File(output, "keep.pro");
+        NativeRuntimeArtifacts.generate(natives, MODULES, output, rules);
         Properties manifest = new Properties();
-        try (Reader reader = Files.newBufferedReader(directory.resolve(NativeRuntimeArtifacts.MANIFEST))) {
+        try (Reader reader = Files.newBufferedReader(output.toPath().resolve(NativeRuntimeArtifacts.MANIFEST))) {
             manifest.load(reader);
         }
-        String digest = HexFormat.of().formatHex(MessageDigest.getInstance("SHA-256")
-                .digest(Files.readAllBytes(provider.toPath())));
-        assertEquals(digest, manifest.getProperty("native-common.sha256"));
-        assertEquals(digest, manifest.getProperty("native-v26_2_R1.sha256"));
+        assertEquals("native-common,native-v26_2_R1", manifest.getProperty("modules"));
+        assertEquals("embedded", manifest.getProperty("storage"));
+        assertFalse(manifest.containsKey("repository"));
+        for (String module : MODULES) {
+            String digest = digest(Files.readAllBytes(natives.get(module).toPath()));
+            assertEquals(digest, manifest.getProperty(module + ".sha256"));
+            assertEquals("com.github.VolmitSoftware.VolmLib:" + module + ":embedded-" + digest,
+                    manifest.getProperty(module + ".coordinate"));
+        }
         assertTrue(Files.readString(rules.toPath()).contains("-keep class art.arcane.volmlib.util.collection.KList { *; }"));
-        File plugin = directory.resolve("plugin.jar").toFile();
-        try (JarOutputStream jar = new JarOutputStream(Files.newOutputStream(plugin.toPath()))) {
-            jar.putNextEntry(new JarEntry(NativeRuntimeArtifacts.MANIFEST));
-            Files.copy(directory.resolve(NativeRuntimeArtifacts.MANIFEST), jar);
-            jar.closeEntry();
-        }
-        NativeRuntimeArtifacts.verify(plugin, List.of("v26_2_R1"), "revision");
-        assertThrows(GradleException.class, () -> NativeRuntimeArtifacts.verify(plugin, List.of("v26_3_R1"), "revision"));
-        assertThrows(GradleException.class, () -> NativeRuntimeArtifacts.verify(plugin, List.of("v26_2_R1"), "other"));
+        assertEquals(List.of("art/arcane/volmlib/util/collection/KList"),
+                Files.readAllLines(output.toPath().resolve("META-INF/volmit/runtime-roots.list")));
     }
 
-    private static ModuleComponentIdentifier module(String module, String version) {
-        return new PublishedModule("com.github.VolmitSoftware.VolmLib", module, version);
+    @Test
+    public void rejectsAProviderSetThatDiffersFromTheRuntimeModules() throws Exception {
+        Map<String, File> natives = natives();
+        natives.remove("native-v26_2_R1");
+        File output = temporary.newFolder("generated");
+        assertThrows(GradleException.class, () -> NativeRuntimeArtifacts.generate(natives, MODULES, output,
+                new File(output, "keep.pro")));
     }
 
-    private record PublishedModule(String group, String module, String version)
-            implements ModuleComponentIdentifier, ModuleIdentifier {
-        @Override
-        public String getGroup() {
-            return group;
-        }
+    @Test
+    public void verifiesThePluginManifestAgainstTheProvidersBeingEmbedded() throws Exception {
+        Map<String, File> natives = natives();
+        File plugin = plugin(natives, Map.of());
+        NativeRuntimeArtifacts.verify(plugin, MODULES, natives);
+        assertThrows(GradleException.class, () -> NativeRuntimeArtifacts.verify(plugin,
+                List.of("native-common", "native-v26_3_R1"), natives));
+        Map<String, File> rebuilt = new TreeMap<>(natives);
+        rebuilt.put("native-v26_2_R1", provider("rebuilt.jar", "art/arcane/volmlib/util/collection/KMap"));
+        assertThrows(GradleException.class, () -> NativeRuntimeArtifacts.verify(plugin, MODULES, rebuilt));
+    }
 
-        @Override
-        public String getModule() {
-            return module;
-        }
+    @Test
+    public void rejectsProviderImplementationsBundledOutsideTheEmbeddedJars() throws Exception {
+        Map<String, File> natives = natives();
+        File plugin = plugin(natives, Map.of("art/arcane/volmlib/nativelib/v26_2_R1/terrain/Provider.class", new byte[0]));
+        assertThrows(GradleException.class, () -> NativeRuntimeArtifacts.verify(plugin, MODULES, natives));
+    }
 
-        @Override
-        public String getVersion() {
-            return version;
-        }
+    @Test
+    public void verifiesTheEmbeddedProviderBytesInsideThePackedRuntime() throws Exception {
+        Map<String, File> natives = natives();
+        Map<String, byte[]> runtime = runtime(natives, natives);
+        NativeRuntimeArtifacts.verifyPacked(packed(runtime), MODULES, natives);
+        NativeRuntimeArtifacts.verifyPacked(jar("ordinary.jar", runtime), MODULES, natives);
+        Map<String, File> rebuilt = new TreeMap<>(natives);
+        rebuilt.put("native-v26_2_R1", provider("rebuilt.jar", "art/arcane/volmlib/util/collection/KMap"));
+        assertThrows(GradleException.class, () -> NativeRuntimeArtifacts.verifyPacked(packed(runtime(natives, rebuilt)),
+                MODULES, natives));
+        Map<String, byte[]> missing = new TreeMap<>(runtime);
+        missing.remove(NativeRuntimeArtifacts.RESOURCES + "native-v26_2_R1.jar");
+        assertThrows(GradleException.class, () -> NativeRuntimeArtifacts.verifyPacked(packed(missing), MODULES, natives));
+    }
 
-        @Override
-        public ModuleIdentifier getModuleIdentifier() {
-            return this;
-        }
+    private Map<String, File> natives() throws IOException {
+        Map<String, File> natives = new TreeMap<>();
+        natives.put("native-common", provider("common.jar", "java/lang/Object"));
+        natives.put("native-v26_2_R1", provider("v26_2_R1.jar", "art/arcane/volmlib/util/collection/KList"));
+        return natives;
+    }
 
-        @Override
-        public String getName() {
-            return module;
-        }
+    private File provider(String name, String superclass) throws IOException {
+        ClassWriter writer = new ClassWriter(0);
+        writer.visit(Opcodes.V17, Opcodes.ACC_PUBLIC, "art/arcane/volmlib/nativelib/v26_2_R1/terrain/Provider", null,
+                superclass, null);
+        writer.visitEnd();
+        return jar(name, Map.of("art/arcane/volmlib/nativelib/v26_2_R1/terrain/Provider.class", writer.toByteArray()));
+    }
 
-        @Override
-        public String getDisplayName() {
-            return group + ":" + module + ":" + version;
+    private File plugin(Map<String, File> natives, Map<String, byte[]> extra) throws IOException {
+        File generated = temporary.newFolder();
+        NativeRuntimeArtifacts.generate(natives, MODULES, generated, new File(generated, "keep.pro"));
+        Map<String, byte[]> contents = new TreeMap<>(extra);
+        contents.put(NativeRuntimeArtifacts.MANIFEST,
+                Files.readAllBytes(generated.toPath().resolve(NativeRuntimeArtifacts.MANIFEST)));
+        return jar("plugin.jar", contents);
+    }
+
+    private Map<String, byte[]> runtime(Map<String, File> described, Map<String, File> embedded) throws IOException {
+        File generated = temporary.newFolder();
+        NativeRuntimeArtifacts.generate(described, MODULES, generated, new File(generated, "keep.pro"));
+        Map<String, byte[]> contents = new TreeMap<>();
+        contents.put(NativeRuntimeArtifacts.MANIFEST,
+                Files.readAllBytes(generated.toPath().resolve(NativeRuntimeArtifacts.MANIFEST)));
+        for (Map.Entry<String, File> provider : embedded.entrySet()) {
+            contents.put(NativeRuntimeArtifacts.RESOURCES + provider.getKey() + ".jar",
+                    Files.readAllBytes(provider.getValue().toPath()));
         }
+        return contents;
+    }
+
+    private File packed(Map<String, byte[]> runtime) throws IOException {
+        ByteArrayOutputStream compressed = new ByteArrayOutputStream();
+        try (XZOutputStream xz = new XZOutputStream(compressed, new LZMA2Options(1))) {
+            xz.write(Files.readAllBytes(jar("payload.jar", runtime).toPath()));
+        }
+        Map<String, byte[]> outer = new TreeMap<>();
+        outer.put(NativeRuntimeArtifacts.MANIFEST, runtime.get(NativeRuntimeArtifacts.MANIFEST));
+        outer.put("META-INF/volmit/runtime.jar.xz", compressed.toByteArray());
+        return jar("packed.jar", outer);
+    }
+
+    private File jar(String name, Map<String, byte[]> contents) throws IOException {
+        Path file = temporary.newFolder().toPath().resolve(name);
+        try (JarOutputStream jar = new JarOutputStream(Files.newOutputStream(file))) {
+            for (Map.Entry<String, byte[]> entry : contents.entrySet()) {
+                jar.putNextEntry(new JarEntry(entry.getKey()));
+                jar.write(entry.getValue());
+                jar.closeEntry();
+            }
+        }
+        return file.toFile();
+    }
+
+    private static String digest(byte[] bytes) throws Exception {
+        return HexFormat.of().formatHex(MessageDigest.getInstance("SHA-256").digest(bytes));
     }
 }
diff --git a/core/build.gradle b/core/build.gradle
index 3f47c75b7..edc046f0c 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -38,9 +38,6 @@ plugins {
 apply from: rootProject.file('gradle/runtime-relocations.gradle')
 
 def lib = 'art.arcane.iris.util'
-String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate')
-    .orElse('com.github.VolmitSoftware:VolmLib:master-SNAPSHOT')
-    .get()
 
 String languageSourceReference = providers.gradleProperty('languageRevision').orElse('master').get()
 List<File> languageSourceFiles = fileTree('src/main/resources/languages') {
@@ -93,10 +90,10 @@ tasks.named('processResources').configure {
  */
 dependencies {
     api(project(':spi'))
-    api("com.github.VolmitSoftware.VolmLib:native-api:${volmLibCoordinate.tokenize(':').last()}") {
+    api('com.github.VolmitSoftware.VolmLib:native-api:master-SNAPSHOT') {
         transitive = false
     }
-    api("com.github.VolmitSoftware.VolmLib:native-terrain-api:${volmLibCoordinate.tokenize(':').last()}") {
+    api('com.github.VolmitSoftware.VolmLib:native-terrain-api:master-SNAPSHOT') {
         transitive = false
     }
 
@@ -129,7 +126,7 @@ dependencies {
 
     // Shaded
     implementation('de.crazydev22.slimjar.helper:spigot:2.1.9')
-    implementation(volmLibCoordinate) {
+    implementation('com.github.VolmitSoftware.VolmLib:volmlib-shared:master-SNAPSHOT') {
         transitive = false
     }
     implementation('com.moandjiezana.toml:toml4j:0.7.2') {
diff --git a/gradle.properties b/gradle.properties
index d1dde0a20..46532118c 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -28,4 +28,3 @@ apiVersion=26.1
 fabricLoaderVersion=0.19.5
 forgeVersion=26.3-66.0.8
 neoForgeVersion=26.3.0.33-beta
-volmLibCoordinate=com.github.VolmitSoftware.VolmLib:volmlib-shared:d24d28acddbf3555c0c30ac99569ebacd476ce27
diff --git a/gradle/generation-build-revision.gradle b/gradle/generation-build-revision.gradle
index 8785ce3a2..eee1cb288 100644
--- a/gradle/generation-build-revision.gradle
+++ b/gradle/generation-build-revision.gradle
@@ -13,13 +13,12 @@ Configuration kernelDependencies = configurations.create('generationKernelDepend
     extendsFrom(configurations.implementation, configurations.slim, configurations.annotationProcessor)
 }
 dependencies.add(kernelDependencies.name, libs.guava)
-String nativeLibraryVersion = providers.gradleProperty('volmLibCoordinate').get().tokenize(':').last()
 List<String> nativeRevisionModules = ['native-common', 'native-minecraft26_2-sources']
 for (String adapter : rootProject.extensions.extraProperties.get('nativeDevelopmentAdapters')) {
     nativeRevisionModules.add('native-' + adapter)
 }
 for (String module : nativeRevisionModules) {
-    dependencies.add(kernelDependencies.name, "com.github.VolmitSoftware.VolmLib:${module}:${nativeLibraryVersion}") {
+    dependencies.add(kernelDependencies.name, "com.github.VolmitSoftware.VolmLib:${module}:master-SNAPSHOT") {
         transitive = false
     }
 }
diff --git a/gradle/native-minecraft-sources.gradle b/gradle/native-minecraft-sources.gradle
index 4cc8201af..38ab738e0 100644
--- a/gradle/native-minecraft-sources.gradle
+++ b/gradle/native-minecraft-sources.gradle
@@ -3,16 +3,12 @@ Configuration nativeMinecraftSources = configurations.create('nativeMinecraftSou
     canBeResolved = true
 }
 
-Properties nativeLibraryProperties = new Properties()
-file('../../gradle.properties').withInputStream { InputStream stream -> nativeLibraryProperties.load(stream) }
-String nativeLibraryCoordinate = providers.gradleProperty('volmLibCoordinate')
-    .getOrElse(nativeLibraryProperties.getProperty('volmLibCoordinate'))
 String nativeSourceLoader = extensions.extraProperties.get('nativeSourceLoader')
 String nativeSourceImplementation = 'minecraft26_2'
 String nativeSourceMinecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse('26.3')
 extensions.extraProperties.set('nativeSourceImplementation', nativeSourceImplementation)
 dependencies.add(nativeMinecraftSources.name,
-    "com.github.VolmitSoftware.VolmLib:native-${nativeSourceImplementation}-sources:${nativeLibraryCoordinate.tokenize(':').last()}")
+    "com.github.VolmitSoftware.VolmLib:native-${nativeSourceImplementation}-sources:master-SNAPSHOT")
 
 TaskProvider<Sync> unpackNativeMinecraftSources = tasks.register('unpackNativeMinecraftSources', Sync) {
     dependsOn(nativeMinecraftSources)
diff --git a/gradle/volmlib-resolution.settings.gradle b/gradle/volmlib-resolution.settings.gradle
index 02ffef79d..6e2f580dc 100644
--- a/gradle/volmlib-resolution.settings.gradle
+++ b/gradle/volmlib-resolution.settings.gradle
@@ -40,10 +40,17 @@
  *   otherwise                         walk up from settingsDir looking for a `VolmLib` directory
  *                                     that contains a settings script.
  *
- * When nothing is found the build falls back to the published `volmLibCoordinate` from
- * gradle.properties.
+ * When nothing is found, or substitution is disabled, every VolmLib coordinate resolves the published
+ * master-SNAPSHOT from JitPack instead, re-checked on every build like the rest of the plugin fleet.
+ *
+ * The outcome is logged once per top-level build and handed to the build scripts through `gradle`
+ * extra properties: `volmLibDirectory` (the substituted checkout, or null) and `volmLibStamp` (the
+ * content of META-INF/volmit/volmlib.properties in every shipped jar).
  */
 
+import org.gradle.api.artifacts.Configuration
+import org.gradle.process.ExecOutput
+
 import java.io.File
 
 boolean irisHasVolmLibSettings(File directory) {
@@ -85,9 +92,47 @@ boolean irisUseLocalVolmLib = providers.gradleProperty('useLocalVolmLib')
     .orElse('true')
     .map { String value -> value.equalsIgnoreCase('true') }
     .get()
-File irisLocalVolmLibDirectory = irisResolveLocalVolmLibDirectory()
+File irisLocalVolmLibDirectory = irisUseLocalVolmLib ? irisResolveLocalVolmLibDirectory() : null
 
-if (irisUseLocalVolmLib && irisLocalVolmLibDirectory != null) {
+String irisGit(File directory, String... arguments) {
+    try {
+        ExecOutput result = providers.exec {
+            commandLine(['git', '-C', directory.absolutePath] + arguments.toList())
+            ignoreExitValue = true
+        }
+        return result.result.get().exitValue == 0 ? result.standardOutput.asText.get().trim() : null
+    } catch (Exception ignored) {
+        return null
+    }
+}
+
+Map<String, String> irisVolmLibStamp
+String irisVolmLibDescription
+if (irisLocalVolmLibDirectory == null) {
+    irisVolmLibStamp = [source: 'published master-SNAPSHOT']
+    irisVolmLibDescription = 'published master-SNAPSHOT'
+    gradle.allprojects { Project project ->
+        project.buildscript.configurations.configureEach { Configuration configuration ->
+            configuration.resolutionStrategy.cacheChangingModulesFor(0, 'seconds')
+        }
+        project.configurations.configureEach { Configuration configuration ->
+            configuration.resolutionStrategy.cacheChangingModulesFor(0, 'seconds')
+        }
+    }
+} else {
+    String commit = irisGit(irisLocalVolmLibDirectory, 'rev-parse', 'HEAD')
+    String status = commit == null ? null : irisGit(irisLocalVolmLibDirectory, 'status', '--porcelain')
+    String dirty = status == null ? 'unknown' : String.valueOf(!status.isEmpty())
+    irisVolmLibStamp = [source: 'local', commit: commit ?: 'unknown', dirty: dirty]
+    irisVolmLibDescription = "${irisLocalVolmLibDirectory.canonicalPath} @ ${commit == null ? 'unknown' : commit.take(7)}${dirty == 'true' ? '+dirty' : ''}"
+}
+gradle.extensions.extraProperties.set('volmLibDirectory', irisLocalVolmLibDirectory)
+gradle.extensions.extraProperties.set('volmLibStamp', irisVolmLibStamp)
+if (gradle.parent == null) {
+    logger.lifecycle("VolmLib: ${irisVolmLibDescription}")
+}
+
+if (irisLocalVolmLibDirectory != null) {
     includeBuild(irisLocalVolmLibDirectory) {
         dependencySubstitution {
             substitute(module('com.github.VolmitSoftware:VolmLib')).using(project(':shared'))
diff --git a/gradle/volmlib-stamp.gradle b/gradle/volmlib-stamp.gradle
new file mode 100644
index 000000000..f655c8df8
--- /dev/null
+++ b/gradle/volmlib-stamp.gradle
@@ -0,0 +1,26 @@
+/*
+ * Iris is a World Generator for Minecraft Servers
+ * Copyright (c) 2026 Arcane Arts (Volmit Software)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+// Writes the VolmLib provenance that gradle/volmlib-resolution.settings.gradle resolved. Every shipped jar
+// carries it as META-INF/volmit/volmlib.properties.
+Map<String, String> volmLibStamp = (Map<String, String>) gradle.extensions.extraProperties.get('volmLibStamp')
+
+tasks.register('generateVolmLibStamp', WriteProperties) {
+    destinationFile.set(layout.buildDirectory.file('generated/volmlib-stamp/volmlib.properties'))
+    properties(volmLibStamp)
+}
diff --git a/jitpack.yml b/jitpack.yml
index 8b9002186..9f0056e7f 100644
--- a/jitpack.yml
+++ b/jitpack.yml
@@ -1,4 +1,4 @@
 jdk:
   - openjdk25
 install:
-  - ./gradlew --no-daemon build publishToMavenLocal -PuseLocalVolmLib=false -PuseMavenLocal=false
+  - ./gradlew --no-daemon build publishToMavenLocal -PuseLocalVolmLib=false
diff --git a/probe/build.gradle b/probe/build.gradle
index 512c6cd26..75fb1ca1a 100644
--- a/probe/build.gradle
+++ b/probe/build.gradle
@@ -9,10 +9,6 @@ application {
     mainClass = 'art.arcane.iris.probe.ClassloadProbe'
 }
 
-String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate')
-    .orElse('com.github.VolmitSoftware:VolmLib:master-SNAPSHOT')
-    .get()
-
 configurations {
     studioProbeApi
 }
@@ -23,10 +19,10 @@ dependencies {
     testImplementation('junit:junit:4.13.2')
     testImplementation(libs.gson)
     testImplementation(testFixtures(project(':core')))
-    testImplementation(volmLibCoordinate) {
+    testImplementation('com.github.VolmitSoftware.VolmLib:volmlib-shared:master-SNAPSHOT') {
         transitive = false
     }
-    compileOnly(volmLibCoordinate) {
+    compileOnly('com.github.VolmitSoftware.VolmLib:volmlib-shared:master-SNAPSHOT') {
         transitive = false
     }
     runtimeOnly(libs.paralithic)
diff --git a/publish-volmlib.bat b/publish-volmlib.bat
deleted file mode 100644
index 8095840c0..000000000
--- a/publish-volmlib.bat
+++ /dev/null
@@ -1,59 +0,0 @@
-@echo off
-REM Publishes VolmLib to the local Maven repository under the coordinate this project
-REM resolves by default: com.github.VolmitSoftware:VolmLib:master-SNAPSHOT.
-REM
-REM VolmLib is normally picked up as a composite build straight from source, so this is
-REM only needed when you build with -PuseLocalVolmLib=false, or when another tool has to
-REM resolve VolmLib from the local Maven repository rather than the included build.
-REM
-REM The lookup mirrors settings.gradle: it walks up from this script looking for a
-REM VolmLib checkout sitting beside the project root. Set VOLMLIB_DIR to override.
-REM Any extra arguments are forwarded to gradle.
-
-setlocal
-
-set "SCRIPT_DIR=%~dp0"
-if "%SCRIPT_DIR:~-1%"=="\" set "SCRIPT_DIR=%SCRIPT_DIR:~0,-1%"
-
-set "VOLMLIB_DIRECTORY="
-
-if defined VOLMLIB_DIR call :check "%VOLMLIB_DIR%"
-if not defined VOLMLIB_DIRECTORY call :search "%SCRIPT_DIR%"
-
-if not defined VOLMLIB_DIRECTORY (
-    echo Could not find a VolmLib checkout. 1>&2
-    echo Expected a VolmLib directory beside this project root, or VOLMLIB_DIR pointing at one. 1>&2
-    exit /b 1
-)
-
-echo ==^> Publishing VolmLib from %VOLMLIB_DIRECTORY%
-
-pushd "%VOLMLIB_DIRECTORY%"
-if errorlevel 1 exit /b 1
-
-call gradlew.bat publishToMavenLocal -Pgroup=com.github.VolmitSoftware -Pversion=master-SNAPSHOT -PvolmLibArtifactId=VolmLib %*
-set "PUBLISH_RESULT=%ERRORLEVEL%"
-
-popd
-exit /b %PUBLISH_RESULT%
-
-:check
-if exist "%~1\settings.gradle" set "VOLMLIB_DIRECTORY=%~f1"
-if exist "%~1\settings.gradle.kts" set "VOLMLIB_DIRECTORY=%~f1"
-goto :eof
-
-:search
-set "CURRENT=%~f1"
-:search_loop
-if exist "%CURRENT%\VolmLib\settings.gradle" (
-    set "VOLMLIB_DIRECTORY=%CURRENT%\VolmLib"
-    goto :eof
-)
-if exist "%CURRENT%\VolmLib\settings.gradle.kts" (
-    set "VOLMLIB_DIRECTORY=%CURRENT%\VolmLib"
-    goto :eof
-)
-for %%I in ("%CURRENT%\..") do set "PARENT=%%~fI"
-if /i "%PARENT%"=="%CURRENT%" goto :eof
-set "CURRENT=%PARENT%"
-goto :search_loop
diff --git a/publish-volmlib.sh b/publish-volmlib.sh
deleted file mode 100644
index 322de2278..000000000
--- a/publish-volmlib.sh
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/usr/bin/env bash
-#
-# Publishes VolmLib to the local Maven repository under the coordinate this project
-# resolves by default: com.github.VolmitSoftware:VolmLib:master-SNAPSHOT.
-#
-# VolmLib is normally picked up as a composite build straight from source, so this is
-# only needed when you build with -PuseLocalVolmLib=false, or when another tool has to
-# resolve VolmLib from ~/.m2 rather than from the included build.
-#
-# The lookup mirrors settings.gradle: it walks up from this script looking for a
-# VolmLib checkout sitting beside the project root. Set VOLMLIB_DIR to override.
-# Any extra arguments are forwarded to gradle.
-
-set -o pipefail
-
-SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
-
-has_volmlib_settings() {
-    [[ -f "$1/settings.gradle" || -f "$1/settings.gradle.kts" ]]
-}
-
-resolve_volmlib_directory() {
-    if [[ -n "$VOLMLIB_DIR" ]] && has_volmlib_settings "$VOLMLIB_DIR"; then
-        printf '%s' "$VOLMLIB_DIR"
-        return 0
-    fi
-
-    local current="$SCRIPT_DIR"
-    while [[ -n "$current" ]]; do
-        if has_volmlib_settings "$current/VolmLib"; then
-            printf '%s' "$current/VolmLib"
-            return 0
-        fi
-
-        local parent
-        parent="$(dirname -- "$current")"
-        [[ "$parent" == "$current" ]] && break
-        current="$parent"
-    done
-
-    return 1
-}
-
-if ! VOLMLIB_DIRECTORY="$(resolve_volmlib_directory)"; then
-    printf 'Could not find a VolmLib checkout.\n' >&2
-    printf 'Expected a VolmLib directory beside this project root, or VOLMLIB_DIR pointing at one.\n' >&2
-    exit 1
-fi
-
-printf '==> Publishing VolmLib from %s\n' "$VOLMLIB_DIRECTORY"
-
-cd "$VOLMLIB_DIRECTORY" || exit 1
-./gradlew publishToMavenLocal \
-    -Pgroup=com.github.VolmitSoftware \
-    -Pversion=master-SNAPSHOT \
-    -PvolmLibArtifactId=VolmLib \
-    "$@"
diff --git a/spi/build.gradle b/spi/build.gradle
index cfd4f6732..6e4427943 100644
--- a/spi/build.gradle
+++ b/spi/build.gradle
@@ -12,7 +12,7 @@ java {
 }
 
 dependencies {
-    api("com.github.VolmitSoftware.VolmLib:native-api:${providers.gradleProperty('volmLibCoordinate').get().tokenize(':').last()}") {
+    api('com.github.VolmitSoftware.VolmLib:native-api:master-SNAPSHOT') {
         transitive = false
     }
     testImplementation('junit:junit:4.13.2')