diff --git a/build.gradle.kts b/build.gradle.kts
index c6e7631..7402cd4 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -63,6 +63,39 @@ subprojects {
     }
 }
 
+// includeBuild() provides automatic plugin substitution but root tasks
+// don't propagate to composite builds. Wire in the gradle-plugin publish.
+// We use afterEvaluate to ensure all plugins are applied before we reference tasks.
+gradle.projectsEvaluated {
+    tasks.register("publishToMavenLocal") {
+        group = "publishing"
+        description = "Publish all modules (including gradle-plugin) to Maven Local"
+
+        // Depend on subprojects that have maven-publish applied
+        subprojects.forEach { subproject ->
+            if (subproject.plugins.hasPlugin("maven-publish")) {
+                dependsOn(subproject.tasks.named("publishToMavenLocal"))
+            }
+        }
+        // Also publish the gradle-plugin composite build
+        dependsOn(gradle.includedBuild("gradle-plugin").task(":publishToMavenLocal"))
+    }
+
+    tasks.register("publishAllPublicationsToComposeRepoRepository") {
+        group = "publishing"
+        description = "Publish all modules (including gradle-plugin) to ComposeRepo"
+
+        // Depend on subprojects that have the ComposeRepo task
+        subprojects.forEach { subproject ->
+            if (subproject.tasks.findByName("publishAllPublicationsToComposeRepoRepository") != null) {
+                dependsOn(subproject.tasks.named("publishAllPublicationsToComposeRepoRepository"))
+            }
+        }
+        // Also publish the gradle-plugin composite build
+        dependsOn(gradle.includedBuild("gradle-plugin").task(":publishAllPublicationsToComposeRepoRepository"))
+    }
+}
+
 inline fun <reified T> Project.configureIfExists(fn: T.() -> Unit) {
     extensions.findByType(T::class.java)?.fn()
 }
diff --git a/modules/gradle-plugin/build.gradle.kts b/modules/gradle-plugin/build.gradle.kts
index e24b4e8..9a209ad 100644
--- a/modules/gradle-plugin/build.gradle.kts
+++ b/modules/gradle-plugin/build.gradle.kts
@@ -1,3 +1,5 @@
+import java.util.Properties
+import java.io.File
 import org.jetbrains.kotlin.gradle.tasks.KotlinJvmCompile
 
 plugins {
@@ -25,6 +27,16 @@ dependencies {
 
 group = "org.jetbrains.compose.storytale"
 
+// Composite builds don't inherit properties from the root project.
+// Read from the root's gradle.properties as a fallback.
+val rootGradleProperties = Properties().apply {
+    val rootProps = rootProject.rootDir.toPath().resolve("../../gradle.properties").toFile()
+    if (rootProps.exists()) load(rootProps.inputStream())
+}
+version = findProperty("storytale.deploy.version")
+    ?: rootGradleProperties.getProperty("storytale.deploy.version")
+    ?: error("'storytale.deploy.version' was not set")
+
 val emptyJavadocJar by tasks.registering(Jar::class) {
     archiveClassifier.set("javadoc")
 }
@@ -39,6 +51,16 @@ publishing {
             artifact(emptyJavadocJar)
         }
     }
+    repositories {
+        maven {
+            name = "ComposeRepo"
+            setUrl(System.getenv("COMPOSE_REPO_URL"))
+            credentials {
+                username = System.getenv("COMPOSE_REPO_USERNAME")
+                password = System.getenv("COMPOSE_REPO_KEY")
+            }
+        }
+    }
 }
 
 tasks.withType<KotlinJvmCompile>().configureEach {
diff --git a/modules/gradle-plugin/settings.gradle.kts b/modules/gradle-plugin/settings.gradle.kts
index df14551..939d055 100644
--- a/modules/gradle-plugin/settings.gradle.kts
+++ b/modules/gradle-plugin/settings.gradle.kts
@@ -1,3 +1,5 @@
+rootProject.name = "gradle-plugin"
+
 dependencyResolutionManagement {
     repositories {
         google()