diff --git a/app/javascript/dashboard/api/captain/hermesBuilder.js b/app/javascript/dashboard/api/captain/hermesBuilder.js
index 4782271c0..cea68963f 100644
--- a/app/javascript/dashboard/api/captain/hermesBuilder.js
+++ b/app/javascript/dashboard/api/captain/hermesBuilder.js
@@ -14,6 +14,10 @@ class HermesBuilder extends ApiClient {
     return axios.post(this.url, { text });
   }
 
+  start() {
+    return axios.post(`${this.url}/start`);
+  }
+
   reset() {
     return axios.delete(`${this.url}/reset`);
   }
diff --git a/app/javascript/dashboard/i18n/locale/en/captain.json b/app/javascript/dashboard/i18n/locale/en/captain.json
index 1db4eae22..08b88f46a 100644
--- a/app/javascript/dashboard/i18n/locale/en/captain.json
+++ b/app/javascript/dashboard/i18n/locale/en/captain.json
@@ -899,11 +899,12 @@
     "HEADER_DESCRIPTION": "Chat with the Builder to create a new Hermes agent. It asks questions and saves the spec as JSON for review at the end.",
     "RESET": "Clear conversation",
     "RESET_CONFIRM": "Clear current conversation with the Builder?",
-    "EMPTY_STATE": "Type \"hello\" to start. The Builder will guide you.",
+    "EMPTY_STATE": "Ready to create a new Hermes agent? Click \"Start creation\" and the Builder will guide you.",
     "PLACEHOLDER": "Type and press Enter to send (Shift+Enter for new line)",
     "SEND": "Send",
     "SESSION_LABEL": "Session:",
     "SEND_FAILED": "Send failed: {message}",
-    "RESET_FAILED": "Failed to clear session."
+    "RESET_FAILED": "Failed to clear session.",
+    "START": "Start creation"
   }
 }
\ No newline at end of file
diff --git a/app/javascript/dashboard/i18n/locale/pt_BR/captain.json b/app/javascript/dashboard/i18n/locale/pt_BR/captain.json
index 543584605..cbbc6c9a2 100644
--- a/app/javascript/dashboard/i18n/locale/pt_BR/captain.json
+++ b/app/javascript/dashboard/i18n/locale/pt_BR/captain.json
@@ -900,11 +900,12 @@
     "HEADER_DESCRIPTION": "Converse com o Construtor pra criar um novo agente Hermes. Ele faz perguntas e ao final salva a especificação em JSON pra revisão.",
     "RESET": "Limpar conversa",
     "RESET_CONFIRM": "Limpar conversa atual com o Construtor?",
-    "EMPTY_STATE": "Mande \"olá\" pra começar. O Construtor vai te guiar.",
+    "EMPTY_STATE": "Pronto pra criar um novo agente Hermes? Clica em \"Iniciar criação\" e o Construtor te guia.",
     "PLACEHOLDER": "Escreva e Enter pra enviar (Shift+Enter pula linha)",
     "SEND": "Enviar",
     "SESSION_LABEL": "Sessão:",
     "SEND_FAILED": "Erro ao enviar: {message}",
-    "RESET_FAILED": "Falha ao limpar sessão."
+    "RESET_FAILED": "Falha ao limpar sessão.",
+    "START": "Iniciar criação"
   }
 }
\ No newline at end of file
diff --git a/app/javascript/dashboard/routes/dashboard/captain/builder/Index.vue b/app/javascript/dashboard/routes/dashboard/captain/builder/Index.vue
index 23e5a0806..de5cc933e 100644
--- a/app/javascript/dashboard/routes/dashboard/captain/builder/Index.vue
+++ b/app/javascript/dashboard/routes/dashboard/captain/builder/Index.vue
@@ -88,6 +88,24 @@ const resetSession = async () => {
   }
 };
 
+const startSession = async () => {
+  if (sending.value) return;
+  sending.value = true;
+  try {
+    await hermesBuilderApi.start();
+    // Construtor vai responder com primeira pergunta via callback async
+    // — polling pega em ~2s
+  } catch (e) {
+    useAlert(
+      t('CAPTAIN_HERMES_BUILDER.SEND_FAILED', {
+        message: e.response?.data?.error || e.message || 'unknown',
+      })
+    );
+  } finally {
+    sending.value = false;
+  }
+};
+
 const formatTime = iso => {
   if (!iso) return '';
   const d = new Date(iso);
@@ -124,7 +142,10 @@ watch(messages, () => nextTick().then(scrollToBottom), { deep: true });
 
       <section ref="scrollContainer" class="messages">
         <div v-if="!messages.length" class="empty-state">
-          {{ t('CAPTAIN_HERMES_BUILDER.EMPTY_STATE') }}
+          <p>{{ t('CAPTAIN_HERMES_BUILDER.EMPTY_STATE') }}</p>
+          <Button variant="primary" :disabled="sending" @click="startSession">
+            {{ t('CAPTAIN_HERMES_BUILDER.START') }}
+          </Button>
         </div>
         <div
           v-for="(msg, idx) in messages"
@@ -216,6 +237,14 @@ watch(messages, () => nextTick().then(scrollToBottom), { deep: true });
   color: var(--color-text-light, #9ca3af);
   font-size: 14px;
   text-align: center;
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+  align-items: center;
+
+  p {
+    margin: 0;
+  }
 }
 
 .msg {
diff --git a/config/routes.rb b/config/routes.rb
index 9e6648927..c8e0a556a 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -60,6 +60,7 @@ Rails.application.routes.draw do
           namespace :captain do
             resources :hermes_builder, only: [:index, :create] do
               collection do
+                post :start
                 delete :reset
               end
             end
diff --git a/enterprise/app/controllers/enterprise/api/v1/accounts/captain/hermes_builder_controller.rb b/enterprise/app/controllers/api/v1/accounts/captain/hermes_builder_controller.rb
similarity index 66%
rename from enterprise/app/controllers/enterprise/api/v1/accounts/captain/hermes_builder_controller.rb
rename to enterprise/app/controllers/api/v1/accounts/captain/hermes_builder_controller.rb
index 9d4efcc56..f2aac82ea 100644
--- a/enterprise/app/controllers/enterprise/api/v1/accounts/captain/hermes_builder_controller.rb
+++ b/enterprise/app/controllers/api/v1/accounts/captain/hermes_builder_controller.rb
@@ -8,7 +8,7 @@
 #   5. UI faz GET /messages a cada 2s (polling) e renderiza
 #
 # Sessão é por account+user (1 admin → 1 sessão de builder por vez).
-class Enterprise::Api::V1::Accounts::Captain::HermesBuilderController < Api::V1::Accounts::BaseController
+class Api::V1::Accounts::Captain::HermesBuilderController < Api::V1::Accounts::BaseController
   before_action :authorize_admin
 
   def index
@@ -29,6 +29,21 @@ class Enterprise::Api::V1::Accounts::Captain::HermesBuilderController < Api::V1:
     render json: { error: "Falha ao contatar Construtor: #{e.message}" }, status: :bad_gateway
   end
 
+  # Inicia sessão limpa enviando comando-gatilho oculto pro Construtor pra
+  # ele começar o fluxo socrático de criação. UI chama este endpoint
+  # quando admin clica "Iniciar" — sem ter que digitar primeira msg.
+  def start
+    HermesBuilder::Storage.clear(session_key)
+    HermesBuilder::Dispatcher.send_to_construtor(
+      session_id: session_id,
+      message: '__START__ Inicie o fluxo de criação de novo agente Hermes. Comece pela primeira pergunta do Bloco 1 (nome do agente).'
+    )
+    render json: { ok: true, session_id: session_id }, status: :accepted
+  rescue HermesBuilder::Dispatcher::DispatchError => e
+    Rails.logger.error("[HermesBuilder#start] dispatch failed: #{e.message}")
+    render json: { error: "Falha ao contatar Construtor: #{e.message}" }, status: :bad_gateway
+  end
+
   def reset
     HermesBuilder::Storage.clear(session_key)
     render json: { ok: true }