diff --git a/frontend/src/pages/WorkflowEditorPage.jsx b/frontend/src/pages/WorkflowEditorPage.jsx
index a761be2..0aae0c2 100644
--- a/frontend/src/pages/WorkflowEditorPage.jsx
+++ b/frontend/src/pages/WorkflowEditorPage.jsx
@@ -426,14 +426,14 @@ export default function WorkflowEditorPage() {
                 <div className="config-section">
                   <label>KI-Prompt auswählen</label>
                   <select
-                    value={selectedNode.data.prompt_id ? String(selectedNode.data.prompt_id) : ''}
+                    value={selectedNode.data.prompt_slug ? String(selectedNode.data.prompt_slug) : ''}
                     onChange={(e) => {
-                      const promptId = e.target.value
-                      console.log('🎯 Prompt selected:', promptId, 'Type:', typeof promptId)
-                      const selectedPrompt = availablePrompts.find(p => String(p.id) === promptId)
+                      const promptSlug = e.target.value
+                      console.log('🎯 Prompt selected:', promptSlug, 'Type:', typeof promptSlug)
+                      const selectedPrompt = availablePrompts.find(p => p.slug === promptSlug)
                       console.log('📋 Selected prompt object:', selectedPrompt)
                       handleNodeUpdate(selectedNode.id, {
-                        prompt_id: promptId || null,  // UUID as string, no parseInt!
+                        prompt_slug: promptSlug || null,
                         prompt_name: selectedPrompt?.name || null
                       })
                     }}
@@ -448,14 +448,14 @@ export default function WorkflowEditorPage() {
                   >
                     <option value="">-- Basis-Prompt wählen --</option>
                     {availablePrompts.map(prompt => (
-                      <option key={prompt.id} value={String(prompt.id)}>
+                      <option key={prompt.id} value={prompt.slug}>
                         {prompt.name}
                       </option>
                     ))}
                   </select>
-                  {selectedNode.data.prompt_id && (
+                  {selectedNode.data.prompt_slug && (
                     <div style={{ marginTop: 8, fontSize: 12, color: 'var(--text3)' }}>
-                      Prompt ID: {selectedNode.data.prompt_id} ({selectedNode.data.prompt_name || 'unbekannt'})
+                      Prompt: {selectedNode.data.prompt_slug} ({selectedNode.data.prompt_name || 'unbekannt'})
                     </div>
                   )}
                 </div>
diff --git a/frontend/src/utils/workflowSerializer.js b/frontend/src/utils/workflowSerializer.js
index 4983a5b..8d885bd 100644
--- a/frontend/src/utils/workflowSerializer.js
+++ b/frontend/src/utils/workflowSerializer.js
@@ -21,7 +21,7 @@ export function serializeToWorkflowGraph(nodes, edges, metadata = {}) {
 
     // Type-spezifische Felder
     ...(node.type === 'analysis' && {
-      prompt_id: node.data.prompt_id || null,
+      prompt_slug: node.data.prompt_slug || null,
       prompt_name: node.data.prompt_name || null,
       questions: node.data.questions || [],
       fallback_strategy: node.data.fallback_strategy || 'conservative_skip'
@@ -78,7 +78,7 @@ export function deserializeFromWorkflowGraph(jsonbData) {
       label: node.label,
 
       ...(node.type === 'analysis' && {
-        prompt_id: node.prompt_id,
+        prompt_slug: node.prompt_slug,
         prompt_name: node.prompt_name || null, // Falls vom Backend mitgeliefert
         questions: node.questions || [],
         fallback_strategy: node.fallback_strategy || 'conservative_skip'