diff --git a/src/core/tasks/workflow.xml b/src/core/tasks/workflow.xml
index fcf6f96b..8c55ec37 100644
--- a/src/core/tasks/workflow.xml
+++ b/src/core/tasks/workflow.xml
@@ -1,4 +1,4 @@
-<task id="_bmad/core/tasks/workflow.xml" name="Execute Workflow" standalone="false">
+<task id="_bmad/core/tasks/workflow.xml" name="Execute Workflow" standalone="false" internal="true">
   <objective>Execute given workflow by loading its configuration, following instructions, and producing output</objective>
 
   <llm critical="true">
diff --git a/tools/cli/installers/lib/core/manifest-generator.js b/tools/cli/installers/lib/core/manifest-generator.js
index 33e5d0cb..a78bbd5f 100644
--- a/tools/cli/installers/lib/core/manifest-generator.js
+++ b/tools/cli/installers/lib/core/manifest-generator.js
@@ -385,6 +385,11 @@ class ManifestGenerator {
         const filePath = path.join(dirPath, file);
         const content = await fs.readFile(filePath, 'utf8');
 
+        // Skip internal/engine files (not user-facing tasks)
+        if (content.includes('internal="true"')) {
+          continue;
+        }
+
         let name = file.replace(/\.(xml|md)$/, '');
         let displayName = name;
         let description = '';
diff --git a/tools/cli/installers/lib/ide/_base-ide.js b/tools/cli/installers/lib/ide/_base-ide.js
index b3ce3af3..4ae11677 100644
--- a/tools/cli/installers/lib/ide/_base-ide.js
+++ b/tools/cli/installers/lib/ide/_base-ide.js
@@ -446,6 +446,11 @@ class BaseIdeSetup {
           try {
             const content = await fs.readFile(fullPath, 'utf8');
 
+            // Skip internal/engine files (not user-facing tasks/tools)
+            if (content.includes('internal="true"')) {
+              continue;
+            }
+
             // Check for standalone="true" in XML files
             if (entry.name.endsWith('.xml')) {
               // Look for standalone="true" in the opening tag (task or tool)
diff --git a/tools/cli/installers/lib/ide/shared/bmad-artifacts.js b/tools/cli/installers/lib/ide/shared/bmad-artifacts.js
index b85b5994..7bcfd6a7 100644
--- a/tools/cli/installers/lib/ide/shared/bmad-artifacts.js
+++ b/tools/cli/installers/lib/ide/shared/bmad-artifacts.js
@@ -146,10 +146,18 @@ async function getTasksFromDir(dirPath, moduleName) {
       continue;
     }
 
+    const filePath = path.join(dirPath, file);
+    const content = await fs.readFile(filePath, 'utf8');
+
+    // Skip internal/engine files (not user-facing tasks)
+    if (content.includes('internal="true"')) {
+      continue;
+    }
+
     // Remove extension to get task name
     const ext = file.endsWith('.xml') ? '.xml' : '.md';
     tasks.push({
-      path: path.join(dirPath, file),
+      path: filePath,
       name: file.replace(ext, ''),
       module: moduleName,
     });