diff --git a/src/services/workflow-service.js b/src/services/workflow-service.js
index 2545205..df010f6 100644
--- a/src/services/workflow-service.js
+++ b/src/services/workflow-service.js
@@ -92,9 +92,12 @@ async function fetchAllWorkflows() {
 }
 
 /**
- * Search workflows by query string
- * @param {string} query - Search query (matches name, description, etc.)
- * @param {string|null} category - Optional category filter
+ * Search workflows by query string.
+ * Real AD keys (lowercase, cf. D5): id, name, version, applicationName,
+ * commonInfo — no description/code/category field exists.
+ * @param {string} query - Search query (matches workflow name)
+ * @param {string|null} category - Optional applicationName filter (the only
+ *                                 grouping the AD API provides)
  * @param {number} limit - Maximum results to return
  */
 async function searchWorkflows(query, category = null, limit = 50) {
@@ -107,21 +110,16 @@ async function searchWorkflows(query, category = null, limit = 50) {
     const lowerQuery = query.toLowerCase();
     results = results.filter(w => {
       const name = (w.name || w.Name || '').toLowerCase();
-      const description = (w.description || w.Description || '').toLowerCase();
-      const code = (w.code || w.Code || '').toLowerCase();
-
-      return name.includes(lowerQuery) ||
-             description.includes(lowerQuery) ||
-             code.includes(lowerQuery);
+      return name.includes(lowerQuery);
     });
   }
 
-  // Filter by category if provided
+  // Filter by applicationName if provided
   if (category) {
     const lowerCategory = category.toLowerCase();
     results = results.filter(w => {
-      const wfCategory = (w.category || w.Category || '').toLowerCase();
-      return wfCategory.includes(lowerCategory);
+      const applicationName = (w.applicationName || w.ApplicationName || '').toLowerCase();
+      return applicationName.includes(lowerCategory);
     });
   }
 
@@ -156,17 +154,19 @@ async function getWorkflowDetails(workflowId) {
 }
 
 /**
- * List all workflow categories
+ * List distinct applicationName values.
+ * Workflows have no category field — applicationName is the only grouping the
+ * AD API provides, and every workflow of the active application carries the
+ * same value (e.g. "EasyWMS").
  */
 async function listWorkflowCategories() {
   const workflows = await fetchAllWorkflows();
 
-  // Extract unique categories (try both lowercase and uppercase)
   const categories = new Set();
   workflows.forEach(w => {
-    const category = w.category || w.Category;
-    if (category) {
-      categories.add(category);
+    const applicationName = w.applicationName || w.ApplicationName;
+    if (applicationName) {
+      categories.add(applicationName);
     }
   });
 
@@ -181,10 +181,10 @@ async function getWorkflowStats() {
   const workflows = await fetchAllWorkflows();
   const categories = await listWorkflowCategories();
 
-  // Count workflows per category
+  // Count workflows per applicationName (the only grouping in the data)
   const categoryCounts = {};
   workflows.forEach(w => {
-    const cat = w.category || w.Category || 'Uncategorized';
+    const cat = w.applicationName || w.ApplicationName || '(unknown)';
     categoryCounts[cat] = (categoryCounts[cat] || 0) + 1;
   });
 
diff --git a/src/tools/workflow-tools.js b/src/tools/workflow-tools.js
index 1f36f14..2b12f76 100644
--- a/src/tools/workflow-tools.js
+++ b/src/tools/workflow-tools.js
@@ -18,11 +18,11 @@ function listTools() {
         properties: {
           query: {
             type: 'string',
-            description: 'Search query (searches in name, description, code)',
+            description: 'Search query (searches in workflow name)',
           },
           category: {
             type: 'string',
-            description: 'Filter by workflow category/application',
+            description: 'Filter by applicationName — the only grouping the AD API provides (workflows have no category field). All workflows of the active application share the same value (e.g. "EasyWMS").',
           },
           limit: {
             type: 'number',
@@ -48,7 +48,7 @@ function listTools() {
     },
     {
       name: 'list_workflow_categories',
-      description: 'List all available workflow categories',
+      description: 'List workflow groupings by applicationName. Workflows have no category field in the AD API — applicationName is the only grouping available, and all workflows of the active application share the same value.',
       inputSchema: {
         type: 'object',
         properties: {},
@@ -107,16 +107,20 @@ async function searchWorkflows(args) {
       text: JSON.stringify({
         success: true,
         count: results.length,
-        workflows: results.map(w => ({
-          id: w.Id,
-          code: w.Code,
-          name: w.Name,
-          category: w.Category,
-          description: w.Description,
-          version: w.Version,
-          created: w.Created,
-          modified: w.Modified
-        }))
+        // Clés réelles de l'API AD (minuscules, cf. D5) : id, name, version,
+        // applicationName, commonInfo. Pas de code/category/description.
+        workflows: results.map(w => {
+          const commonInfo = w.commonInfo || w.CommonInfo || {};
+          return {
+            id: w.id || w.Id,
+            name: w.name || w.Name,
+            applicationName: w.applicationName || w.ApplicationName,
+            version: w.version || w.Version,
+            createdBy: commonInfo.createdBy,
+            createDate: commonInfo.createDate,
+            updateDate: commonInfo.updateDate
+          };
+        })
       }, null, 2)
     }]
   };
@@ -157,6 +161,7 @@ async function listWorkflowCategories(args) {
       type: 'text',
       text: JSON.stringify({
         success: true,
+        note: 'Workflows have no category field in the AD API — these are the distinct applicationName values, the only grouping available. All workflows of the active application share the same value.',
         totalCategories: categories.length,
         categories,
         stats: {