diff --git a/.gitignore b/.gitignore
index b71c920bc2..e39e074afb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,9 +5,6 @@
 *.java._trace
 *.smap
 *.checkbin
-*.xtendbin
-/*/xtend-gen/*
-!/*/xtend-gen/.gitignore
 
 # macOS
 .DS_Store
diff --git a/AGENTS.md b/AGENTS.md
index 42c3653354..a43e83c917 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -9,7 +9,7 @@ This document helps AI coding agents work effectively with the DSL DevKit codeba
 - **Java**: 21+
 - **Maven**
 - **Tycho**
-- **Xtext/Xtend**
+- **Xtext**
 
 ## Setup
 
@@ -55,7 +55,7 @@ mvn checkstyle:check pmd:check spotbugs:check -f ./ddk-parent/pom.xml
 
 ### PMD
 - **Ruleset**: `ddk-configuration/pmd/ruleset.xml`
-- Excludes: `src-gen/`, `src-model/`, `xtend-gen/`
+- Excludes: `src-gen/`, `src-model/`
 
 ### Checkstyle
 - **Config**: `ddk-configuration/checkstyle/avaloq.xml`
@@ -109,10 +109,6 @@ The project runs **all tests through one aggregator module**, not per-`.test`-mo
 These directories contain generated code - do not edit manually:
 - `src-gen/` - Xtext generated sources
 - `src-model/` - EMF model generated sources
-- `xtend-gen/` - Xtend transpiled Java sources
-
-### Xtend
-- `.xtend` files in `src/` compile to Java in `xtend-gen/`
 
 ## Common Tasks
 
@@ -125,7 +121,7 @@ These directories contain generated code - do not edit manually:
 
 ### Fixing PMD Violations
 1. Check ruleset at `ddk-configuration/pmd/ruleset.xml`
-2. Violations in generated code (`src-gen/`, `xtend-gen/`) are excluded
+2. Violations in generated code (`src-gen/`) are excluded
 3. Run `mvn pmd:check -f ./ddk-parent/pom.xml` to verify fixes
 
 ### Fixing Checkstyle Violations
diff --git a/com.avaloq.tools.ddk.xtext.export/.classpath b/com.avaloq.tools.ddk.xtext.export/.classpath
index fa7306227a..2e254f7cff 100644
--- a/com.avaloq.tools.ddk.xtext.export/.classpath
+++ b/com.avaloq.tools.ddk.xtext.export/.classpath
@@ -6,11 +6,6 @@
       <attribute name="ignore_optional_problems" value="true"/>
     </attributes>
   </classpathentry>
-  <classpathentry kind="src" path="xtend-gen">
-    <attributes>
-      <attribute name="ignore_optional_problems" value="true"/>
-    </attributes>
-  </classpathentry>
   <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21"/>
   <classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
   <classpathentry kind="output" path="bin"/>
diff --git a/com.avaloq.tools.ddk.xtext.export/build.properties b/com.avaloq.tools.ddk.xtext.export/build.properties
index 7838757824..d69df83aa0 100644
--- a/com.avaloq.tools.ddk.xtext.export/build.properties
+++ b/com.avaloq.tools.ddk.xtext.export/build.properties
@@ -1,6 +1,5 @@
 source.. = src/,\
-           src-gen/,\
-           xtend-gen/
+           src-gen/
 bin.includes = META-INF/,\
                .,\
                plugin.xml,\
diff --git a/com.avaloq.tools.ddk.xtext.export/xtend-gen/.gitignore b/com.avaloq.tools.ddk.xtext.export/xtend-gen/.gitignore
deleted file mode 100644
index e69de29bb2..0000000000
diff --git a/com.avaloq.tools.ddk.xtext.expression/.classpath b/com.avaloq.tools.ddk.xtext.expression/.classpath
index fa7306227a..2e254f7cff 100644
--- a/com.avaloq.tools.ddk.xtext.expression/.classpath
+++ b/com.avaloq.tools.ddk.xtext.expression/.classpath
@@ -6,11 +6,6 @@
       <attribute name="ignore_optional_problems" value="true"/>
     </attributes>
   </classpathentry>
-  <classpathentry kind="src" path="xtend-gen">
-    <attributes>
-      <attribute name="ignore_optional_problems" value="true"/>
-    </attributes>
-  </classpathentry>
   <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21"/>
   <classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
   <classpathentry kind="output" path="bin"/>
diff --git a/com.avaloq.tools.ddk.xtext.expression/build.properties b/com.avaloq.tools.ddk.xtext.expression/build.properties
index 7838757824..d69df83aa0 100644
--- a/com.avaloq.tools.ddk.xtext.expression/build.properties
+++ b/com.avaloq.tools.ddk.xtext.expression/build.properties
@@ -1,6 +1,5 @@
 source.. = src/,\
-           src-gen/,\
-           xtend-gen/
+           src-gen/
 bin.includes = META-INF/,\
                .,\
                plugin.xml,\
diff --git a/com.avaloq.tools.ddk.xtext.expression/xtend-gen/.gitignore b/com.avaloq.tools.ddk.xtext.expression/xtend-gen/.gitignore
deleted file mode 100644
index e69de29bb2..0000000000
diff --git a/com.avaloq.tools.ddk.xtext.scope/.classpath b/com.avaloq.tools.ddk.xtext.scope/.classpath
index fa7306227a..2e254f7cff 100644
--- a/com.avaloq.tools.ddk.xtext.scope/.classpath
+++ b/com.avaloq.tools.ddk.xtext.scope/.classpath
@@ -6,11 +6,6 @@
       <attribute name="ignore_optional_problems" value="true"/>
     </attributes>
   </classpathentry>
-  <classpathentry kind="src" path="xtend-gen">
-    <attributes>
-      <attribute name="ignore_optional_problems" value="true"/>
-    </attributes>
-  </classpathentry>
   <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21"/>
   <classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
   <classpathentry kind="output" path="bin"/>
diff --git a/com.avaloq.tools.ddk.xtext.scope/build.properties b/com.avaloq.tools.ddk.xtext.scope/build.properties
index 7838757824..d69df83aa0 100644
--- a/com.avaloq.tools.ddk.xtext.scope/build.properties
+++ b/com.avaloq.tools.ddk.xtext.scope/build.properties
@@ -1,6 +1,5 @@
 source.. = src/,\
-           src-gen/,\
-           xtend-gen/
+           src-gen/
 bin.includes = META-INF/,\
                .,\
                plugin.xml,\
diff --git a/com.avaloq.tools.ddk.xtext.scope/xtend-gen/.gitignore b/com.avaloq.tools.ddk.xtext.scope/xtend-gen/.gitignore
deleted file mode 100644
index e69de29bb2..0000000000
diff --git a/ddk-configuration/pmd/ruleset.xml b/ddk-configuration/pmd/ruleset.xml
index 8277c89135..c2bbd02f5f 100644
--- a/ddk-configuration/pmd/ruleset.xml
+++ b/ddk-configuration/pmd/ruleset.xml
@@ -9,7 +9,6 @@
   <!-- Exclude default folders for generated files from analysis -->
   <exclude-pattern>.*/src-gen/.*</exclude-pattern>
   <exclude-pattern>.*/src-model/.*</exclude-pattern>
-  <exclude-pattern>.*/xtend-gen/.*</exclude-pattern>
   <exclude-pattern>.*/ddk/xtext/test/ui/quickfix/AbstractQuickFixTest.*</exclude-pattern>
 
   <rule ref="category/java/errorprone.xml">
diff --git a/ddk-parent/pom.xml b/ddk-parent/pom.xml
index 289544bd60..f8ade1e0ac 100644
--- a/ddk-parent/pom.xml
+++ b/ddk-parent/pom.xml
@@ -56,7 +56,6 @@
     <pmd.plugin.version>3.28.0</pmd.plugin.version>
     <pmd.version>7.27.0</pmd.version>
     <tycho.version>5.0.4</tycho.version>
-    <xtend.version>2.44.0</xtend.version>
 
     <!-- jgit qualifier: error in CI, warning for local dirty trees -->
     <jgit.dirtyWorkingTree>error</jgit.dirtyWorkingTree>
@@ -237,25 +236,6 @@
           </archive>
         </configuration>
       </plugin>
-      <plugin>
-        <groupId>org.eclipse.xtext</groupId>
-        <artifactId>xtend-maven-plugin</artifactId>
-        <version>${xtend.version}</version>
-        <executions>
-          <execution>
-            <id>xtend-generate</id>
-            <phase>generate-sources</phase>
-            <goals>
-              <goal>compile</goal>
-              <goal>testCompile</goal>
-            </goals>
-            <configuration>
-              <outputDirectory>${basedir}/xtend-gen/</outputDirectory>
-              <testOutputDirectory>${basedir}/xtend-gen/</testOutputDirectory>
-            </configuration>
-          </execution>
-        </executions>
-      </plugin>
       <plugin>
         <groupId>org.eclipse.tycho</groupId>
         <artifactId>tycho-p2-plugin</artifactId>
@@ -352,7 +332,6 @@
           <excludeRoots>
             <excludeRoot>${basedir}/src-gen</excludeRoot>
             <excludeRoot>${basedir}/src-model</excludeRoot>
-            <excludeRoot>${basedir}/xtend-gen</excludeRoot>
           </excludeRoots>
         </configuration>
       </plugin>
@@ -417,19 +396,6 @@
         <plugin>
           <artifactId>maven-clean-plugin</artifactId>
           <version>${clean.version}</version>
-          <configuration>
-            <filesets>
-              <fileset>
-                <directory>xtend-gen</directory>
-                <includes>
-                  <include>**</include>
-                </includes>
-                <excludes>
-                  <exclude>.gitignore</exclude>
-                </excludes>
-              </fileset>
-            </filesets>
-          </configuration>
         </plugin>
       </plugins>
     </pluginManagement>
diff --git a/ddk-target/ddk.target b/ddk-target/ddk.target
index b7bda3bd6e..ac3cf107aa 100644
--- a/ddk-target/ddk.target
+++ b/ddk-target/ddk.target
@@ -28,7 +28,6 @@
     <repository location="https://download.eclipse.org/modeling/emft/mwe/updates/releases/2.25.0/"/>
   </location>
   <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-    <unit id="org.eclipse.xtend.sdk.feature.group" version="0.0.0"/>
     <unit id="org.eclipse.xtext.sdk.feature.group" version="0.0.0"/>
     <unit id="org.eclipse.xtext.xtext.generator" version="0.0.0"/>
     <repository location="https://download.eclipse.org/modeling/tmf/xtext/updates/releases/2.43.0/"/>