diff --git a/apps/ui/js/agents.js b/apps/ui/js/agents.js
index 3128d33..53fa723 100644
--- a/apps/ui/js/agents.js
+++ b/apps/ui/js/agents.js
@@ -5,7 +5,7 @@ function agentUiStatus(status) {
 }
 
 function mapAgent(agent) {
-  return {
+  var mapped = {
     id: agent.id,
     slug: agent.slug,
     display_name: agent.display_name,
@@ -21,10 +21,12 @@ function mapAgent(agent) {
     latest_published_version: agent.latest_published_version,
     mcp_endpoint: agent.mcp_endpoint || '',
   };
+
+  return window.localizeDemoAgent ? window.localizeDemoAgent(mapped) : mapped;
 }
 
 function mapOperation(operation) {
-  return {
+  var mapped = {
     id: operation.id,
     name: operation.name,
     display_name: operation.display_name,
@@ -33,6 +35,8 @@ function mapOperation(operation) {
     current_draft_version: operation.current_draft_version || 1,
     latest_published_version: operation.latest_published_version,
   };
+
+  return window.localizeDemoOperation ? window.localizeDemoOperation(mapped) : mapped;
 }
 
 function currentLocale() {
diff --git a/apps/ui/js/catalog.js b/apps/ui/js/catalog.js
index 19e4820..525b0f1 100644
--- a/apps/ui/js/catalog.js
+++ b/apps/ui/js/catalog.js
@@ -33,7 +33,7 @@ function currentLocale() {
 }
 
 function mapOperation(item) {
-  return {
+  var mapped = {
     id: item.id,
     name: item.name,
     display_name: item.display_name,
@@ -53,6 +53,8 @@ function mapOperation(item) {
     },
     agent_refs: item.agent_refs || [],
   };
+
+  return window.localizeDemoOperation ? window.localizeDemoOperation(mapped) : mapped;
 }
 
 function emptyStats() {
diff --git a/apps/ui/js/i18n.js b/apps/ui/js/i18n.js
index 552d527..a0bca7c 100644
--- a/apps/ui/js/i18n.js
+++ b/apps/ui/js/i18n.js
@@ -750,6 +750,20 @@ var TRANSLATIONS = {
     'agents.toast.lifecycle_error_message': 'Failed to update agent lifecycle',
     'agents.toast.endpoint_title': 'MCP endpoint copied',
 
+    // Demo content
+    'demo.agent.revops-copilot.display_name': 'RevOps Copilot',
+    'demo.agent.revops-copilot.description': 'Revenue operations assistant with CRM and billing tools.',
+    'demo.agent.support-triage.display_name': 'Support Triage',
+    'demo.agent.support-triage.description': 'Draft support agent focused on unary gRPC workflows.',
+    'demo.operation.crm_create_lead.display_name': 'Create CRM Lead',
+    'demo.operation.crm_create_lead.description': 'Create a lead record in the CRM system.',
+    'demo.operation.billing_get_invoice.display_name': 'Get Invoice Status',
+    'demo.operation.billing_get_invoice.description': 'Fetch invoice state and amount from billing.',
+    'demo.operation.support_lookup_ticket.display_name': 'Lookup Support Ticket',
+    'demo.operation.support_lookup_ticket.description': 'Draft unary gRPC support lookup using a descriptor set.',
+    'demo.operation.marketing_archive_contact.display_name': 'Archive Marketing Contact',
+    'demo.operation.marketing_archive_contact.description': 'Legacy archived flow kept for audit only.',
+
     // Login
     'login.title':    'Sign in',
     'login.subtitle': 'Welcome back to your workspace',
@@ -1515,6 +1529,20 @@ var TRANSLATIONS = {
     'agents.toast.lifecycle_error_message': 'Не удалось обновить состояние агента',
     'agents.toast.endpoint_title': 'MCP endpoint скопирован',
 
+    // Demo content
+    'demo.agent.revops-copilot.display_name': 'Помощник RevOps',
+    'demo.agent.revops-copilot.description': 'Ассистент Revenue Operations с CRM- и billing-инструментами.',
+    'demo.agent.support-triage.display_name': 'Триаж поддержки',
+    'demo.agent.support-triage.description': 'Черновой агент поддержки, сфокусированный на unary gRPC-сценариях.',
+    'demo.operation.crm_create_lead.display_name': 'Создать CRM-лид',
+    'demo.operation.crm_create_lead.description': 'Создает запись лида в CRM-системе.',
+    'demo.operation.billing_get_invoice.display_name': 'Статус инвойса',
+    'demo.operation.billing_get_invoice.description': 'Получает состояние и сумму инвойса из billing-системы.',
+    'demo.operation.support_lookup_ticket.display_name': 'Найти тикет поддержки',
+    'demo.operation.support_lookup_ticket.description': 'Черновой unary gRPC lookup поддержки через descriptor set.',
+    'demo.operation.marketing_archive_contact.display_name': 'Архивировать маркетинговый контакт',
+    'demo.operation.marketing_archive_contact.description': 'Устаревший архивный сценарий, оставленный только для аудита.',
+
     // Login
     'login.title':    'Войти',
     'login.subtitle': 'Добро пожаловать обратно',
@@ -1547,6 +1575,64 @@ function tf(key, vars) {
   }, t(key));
 }
 
+function hasTranslation(key) {
+  return t(key) !== key;
+}
+
+function localizeDemoAgent(agent) {
+  if (!agent || !agent.slug) {
+    return agent;
+  }
+
+  var displayNameKey = 'demo.agent.' + agent.slug + '.display_name';
+  var descriptionKey = 'demo.agent.' + agent.slug + '.description';
+
+  if (!hasTranslation(displayNameKey) && !hasTranslation(descriptionKey)) {
+    return agent;
+  }
+
+  return Object.assign({}, agent, {
+    display_name: hasTranslation(displayNameKey) ? t(displayNameKey) : agent.display_name,
+    description: hasTranslation(descriptionKey) ? t(descriptionKey) : agent.description,
+  });
+}
+
+function localizeDemoOperation(operation) {
+  if (!operation || !operation.name) {
+    return operation;
+  }
+
+  var displayNameKey = 'demo.operation.' + operation.name + '.display_name';
+  var descriptionKey = 'demo.operation.' + operation.name + '.description';
+
+  if (!hasTranslation(displayNameKey) && !hasTranslation(descriptionKey)) {
+    return operation;
+  }
+
+  var next = Object.assign({}, operation);
+
+  if (hasTranslation(displayNameKey)) {
+    next.display_name = t(displayNameKey);
+    if (Object.prototype.hasOwnProperty.call(operation, 'operation_display_name')) {
+      next.operation_display_name = t(displayNameKey);
+    }
+  }
+
+  if (hasTranslation(descriptionKey)) {
+    if (Object.prototype.hasOwnProperty.call(operation, 'description')) {
+      next.description = t(descriptionKey);
+    }
+    if (Object.prototype.hasOwnProperty.call(operation, 'tool_description')) {
+      next.tool_description = t(descriptionKey);
+    }
+  }
+
+  return next;
+}
+
+window.localizeDemoAgent = localizeDemoAgent;
+window.localizeDemoOperation = localizeDemoOperation;
+
 function applyLang() {
   // text content
   document.querySelectorAll('[data-i18n]').forEach(function(el) {
diff --git a/apps/ui/js/logs.js b/apps/ui/js/logs.js
index 385e11c..fbfdc90 100644
--- a/apps/ui/js/logs.js
+++ b/apps/ui/js/logs.js
@@ -69,6 +69,20 @@ document.addEventListener('DOMContentLoaded', function () {
 
   function normalizeLog(record) {
     var log = record.log;
+    var agent = window.localizeDemoAgent
+      ? window.localizeDemoAgent({
+        slug: record.agent_slug,
+        display_name: record.agent_display_name,
+        description: '',
+      })
+      : null;
+    var operation = window.localizeDemoOperation
+      ? window.localizeDemoOperation({
+        name: record.operation_name,
+        operation_display_name: record.operation_display_name,
+      })
+      : null;
+
     return {
       id: log.id,
       createdAt: log.created_at,
@@ -80,9 +94,9 @@ document.addEventListener('DOMContentLoaded', function () {
       toolName: log.tool_name,
       message: log.message,
       operationName: record.operation_name,
-      operationDisplayName: record.operation_display_name,
+      operationDisplayName: operation ? operation.operation_display_name : record.operation_display_name,
       agentSlug: record.agent_slug,
-      agentDisplayName: record.agent_display_name,
+      agentDisplayName: agent ? agent.display_name : record.agent_display_name,
       requestPreview: log.request_preview,
       responsePreview: log.response_preview,
       errorKind: log.error_kind,
@@ -143,7 +157,7 @@ document.addEventListener('DOMContentLoaded', function () {
 
       var opSpan = document.createElement('span');
       opSpan.className = 'log-op-name';
-      opSpan.textContent = item.operationName;
+      opSpan.textContent = item.operationDisplayName || item.operationName;
       msgDiv.appendChild(opSpan);
       msgDiv.appendChild(document.createTextNode('\u00a0\u00a0'));
 
diff --git a/apps/ui/js/usage.js b/apps/ui/js/usage.js
index 22c7a6a..99f16e0 100644
--- a/apps/ui/js/usage.js
+++ b/apps/ui/js/usage.js
@@ -71,6 +71,18 @@ document.addEventListener('DOMContentLoaded', function () {
     return 'REST';
   }
 
+  function localizedUsageOperation(operation) {
+    if (!window.localizeDemoOperation) {
+      return operation;
+    }
+
+    return window.localizeDemoOperation({
+      name: operation.operation_name,
+      operation_display_name: operation.operation_display_name,
+      description: operation.operation_description || null,
+    });
+  }
+
   function chartBucketLabel(timestamp, period, index) {
     var date = new Date(timestamp);
     if (period === '7d') {
@@ -276,6 +288,7 @@ document.addEventListener('DOMContentLoaded', function () {
     }, 0);
 
     operations.forEach(function (operation) {
+      var localizedOperation = localizedUsageOperation(operation);
       var node = rowTemplate.content.cloneNode(true);
       var errorRate = operation.calls_total === 0
         ? 0
@@ -284,7 +297,7 @@ document.addEventListener('DOMContentLoaded', function () {
         ? 0
         : ((operation.calls_total / totalCalls) * 100);
 
-      node.querySelector('.col-name').textContent = operation.operation_display_name;
+      node.querySelector('.col-name').textContent = localizedOperation.operation_display_name || operation.operation_display_name;
       node.querySelector('.col-op-slug').textContent = operation.operation_name;
 
       var proto = node.querySelector('.col-proto');
@@ -371,11 +384,12 @@ document.addEventListener('DOMContentLoaded', function () {
 
     var rows = [tKey('usage.csv.header')];
     state.usage.operations.forEach(function (operation) {
+      var localizedOperation = localizedUsageOperation(operation);
       var errorRate = operation.calls_total === 0
         ? 0
         : ((operation.calls_error / operation.calls_total) * 100);
       rows.push([
-        '"' + operation.operation_display_name + '"',
+        '"' + (localizedOperation.operation_display_name || operation.operation_display_name) + '"',
         '"' + protocolLabel(operation.protocol) + '"',
         operation.calls_total,
         operation.calls_error,