helidon-io · tvallin · Mar 11, 2026 · Mar 11, 2026
diff --git a/codegen/src/main/java/io/helidon/extensions/mcp/codegen/McpCodegenUtil.java b/codegen/src/main/java/io/helidon/extensions/mcp/codegen/McpCodegenUtil.java
@@ -21,7 +21,6 @@
 import java.util.stream.Collectors;
 
 import io.helidon.codegen.classmodel.ClassModel;
-import io.helidon.codegen.classmodel.Executable;
 import io.helidon.codegen.classmodel.Method;
 import io.helidon.codegen.classmodel.Parameter;
 import io.helidon.common.types.AccessModifier;
@@ -172,23 +171,6 @@ static void addToListMethod(ClassModel.Builder classModel, TypeName type) {
         classModel.addMethod(method.build());
     }
 
-    /**
-     * Add text content to the builder as literal. The text can be multi line.
-     *
-     * @param builder executable builder
-     * @param text text content
-     */
-    static void generateSafeMultiLine(Executable.Builder<?, ?> builder, String text) {
-        if (text.contains("\n")) {
-            builder.addContentLine("\"\"\"")
-                    .increaseContentPadding()
-                    .addContent(text.replace("\\\"", "\""))
-                    .addContent("\"\"\"");
-        } else {
-            builder.addContentLiteral(text);
-        }
-    }
-
     /**
      * Returns {@code true} if the provided type is an MCP type and create request getter for that type,
      * otherwise nothing is created and return {@code false}.

diff --git a/codegen/src/main/java/io/helidon/extensions/mcp/codegen/McpToolCodegen.java b/codegen/src/main/java/io/helidon/extensions/mcp/codegen/McpToolCodegen.java
@@ -35,7 +35,6 @@
 
 import static io.helidon.extensions.mcp.codegen.McpCodegenUtil.addToListMethod;
 import static io.helidon.extensions.mcp.codegen.McpCodegenUtil.createClassName;
-import static io.helidon.extensions.mcp.codegen.McpCodegenUtil.generateSafeMultiLine;
 import static io.helidon.extensions.mcp.codegen.McpCodegenUtil.getDescription;
 import static io.helidon.extensions.mcp.codegen.McpCodegenUtil.getElementsWithAnnotation;
 import static io.helidon.extensions.mcp.codegen.McpCodegenUtil.isBoolean;
@@ -114,11 +113,10 @@ private void addToolOutputSchema(Method.Builder builder, TypedElementInfo elemen
         }
 
         String outputShema = textSchema.flatMap(t -> t.stringValue())
-                .orElseThrow(() -> new CodegenException("Cannot parse output text schema"))
-                .replace("\"", "\\\"");
-        builder.addContent("return Optional.of(");
-        generateSafeMultiLine(builder, outputShema);
-        builder.addContentLine(");");
+                .orElseThrow(() -> new CodegenException("Cannot parse output text schema"));
+        builder.addContent("return Optional.of(")
+                .addContentLiteral(outputShema)
+                .addContentLine(");");
     }
 
     private void addToolSchemaMethod(Method.Builder builder, TypedElementInfo element) {

diff --git a/examples/calendar-application/calendar-declarative/pom.xml b/examples/calendar-application/calendar-declarative/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2025 Oracle and/or its affiliates.
+    Copyright (c) 2025, 2026 Oracle and/or its affiliates.
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
     <parent>
         <groupId>io.helidon.applications</groupId>
         <artifactId>helidon-se</artifactId>
-        <version>4.3.1</version>
+        <version>4.4.0</version>
         <relativePath/>
     </parent>
 

diff --git a/examples/calendar-application/calendar/pom.xml b/examples/calendar-application/calendar/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2025 Oracle and/or its affiliates.
+    Copyright (c) 2025, 2026 Oracle and/or its affiliates.
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
     <parent>
         <groupId>io.helidon.applications</groupId>
         <artifactId>helidon-se</artifactId>
-        <version>4.3.1</version>
+        <version>4.4.0</version>
         <relativePath/>
     </parent>
 

diff --git a/examples/secured-server/pom.xml b/examples/secured-server/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2025 Oracle and/or its affiliates.
+    Copyright (c) 2025, 2026 Oracle and/or its affiliates.
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
     <parent>
         <groupId>io.helidon.applications</groupId>
         <artifactId>helidon-se</artifactId>
-        <version>4.3.1</version>
+        <version>4.4.0</version>
         <relativePath/>
     </parent>
 

diff --git a/examples/weather-application/mcp-client/pom.xml b/examples/weather-application/mcp-client/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2025 Oracle and/or its affiliates.
+    Copyright (c) 2025, 2026 Oracle and/or its affiliates.
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
     <parent>
         <groupId>io.helidon.applications</groupId>
         <artifactId>helidon-se</artifactId>
-        <version>4.3.1</version>
+        <version>4.4.0</version>
         <relativePath/>
     </parent>
 

diff --git a/examples/weather-application/mcp-server-declarative/pom.xml b/examples/weather-application/mcp-server-declarative/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2025 Oracle and/or its affiliates.
+    Copyright (c) 2025, 2026 Oracle and/or its affiliates.
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
     <parent>
         <groupId>io.helidon.applications</groupId>
         <artifactId>helidon-se</artifactId>
-        <version>4.3.1</version>
+        <version>4.4.0</version>
         <relativePath/>
     </parent>
 

diff --git a/examples/weather-application/mcp-server/pom.xml b/examples/weather-application/mcp-server/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2025 Oracle and/or its affiliates.
+    Copyright (c) 2025, 2026 Oracle and/or its affiliates.
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
     <parent>
         <groupId>io.helidon.applications</groupId>
         <artifactId>helidon-se</artifactId>
-        <version>4.3.1</version>
+        <version>4.4.0</version>
         <relativePath/>
     </parent>
 

diff --git a/pom.xml b/pom.xml
@@ -60,7 +60,7 @@
 
     <properties>
         <version.java>21</version.java>
-        <helidon.version>4.3.1</helidon.version>
+        <helidon.version>4.4.0</helidon.version>
 
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

diff --git a/server/pom.xml b/server/pom.xml
@@ -35,6 +35,10 @@
             <groupId>io.helidon.webserver</groupId>
             <artifactId>helidon-webserver-cors</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.helidon.config</groupId>
+            <artifactId>helidon-config-metadata</artifactId>
+        </dependency>
         <dependency>
             <groupId>io.helidon.cors</groupId>
             <artifactId>helidon-cors</artifactId>

diff --git a/server/src/main/java/module-info.java b/server/src/main/java/module-info.java
@@ -34,6 +34,7 @@
     requires io.helidon.webserver.jsonrpc;
     requires io.helidon.cors;
     requires io.helidon.webserver.cors;
+    requires io.helidon.config.metadata;
 
     requires static io.helidon.common.features.api;