diff --git a/app/controllers/platform/api/v1/agent_bots_controller.rb b/app/controllers/platform/api/v1/agent_bots_controller.rb
index dd70a1ba5e9..594bb856e6f 100644
--- a/app/controllers/platform/api/v1/agent_bots_controller.rb
+++ b/app/controllers/platform/api/v1/agent_bots_controller.rb
@@ -3,7 +3,7 @@ class Platform::Api::V1::AgentBotsController < PlatformController
   before_action :validate_platform_app_permissible, except: [:index, :create]
 
   def index
-    @resources = @platform_app.platform_app_permissibles.where(permissible_type: 'AgentBot').all
+    @resources = @platform_app.platform_app_permissibles.where(permissible_type: 'AgentBot').includes(:permissible)
   end
 
   def show; end
diff --git a/app/models/agent_bot.rb b/app/models/agent_bot.rb
index 63f71615d30..1649a1e2b58 100644
--- a/app/models/agent_bot.rb
+++ b/app/models/agent_bot.rb
@@ -32,6 +32,7 @@ class AgentBot < ApplicationRecord
   has_many :agent_bot_inboxes, dependent: :destroy_async
   has_many :inboxes, through: :agent_bot_inboxes
   has_many :messages, as: :sender, dependent: :nullify
+  has_many :platform_app_permissibles, as: :permissible, dependent: :destroy
   has_many :assigned_conversations, class_name: 'Conversation',
                                     foreign_key: :assignee_agent_bot_id,
                                     dependent: :nullify,
diff --git a/app/views/platform/api/v1/agent_bots/index.json.jbuilder b/app/views/platform/api/v1/agent_bots/index.json.jbuilder
index daa54aa2bd6..c9172d5f82b 100644
--- a/app/views/platform/api/v1/agent_bots/index.json.jbuilder
+++ b/app/views/platform/api/v1/agent_bots/index.json.jbuilder
@@ -1,3 +1,6 @@
 json.array! @resources do |resource|
-  json.partial! 'platform/api/v1/models/agent_bot', formats: [:json], resource: resource.permissible
+  bot = resource.permissible
+  next if bot.nil?
+
+  json.partial! 'platform/api/v1/models/agent_bot', formats: [:json], resource: bot
 end
diff --git a/spec/controllers/platform/api/v1/agent_bots_controller_spec.rb b/spec/controllers/platform/api/v1/agent_bots_controller_spec.rb
index d8a2479eb38..793439a4341 100644
--- a/spec/controllers/platform/api/v1/agent_bots_controller_spec.rb
+++ b/spec/controllers/platform/api/v1/agent_bots_controller_spec.rb
@@ -39,6 +39,19 @@ RSpec.describe 'Platform Agent Bot API', type: :request do
         expect(data.length).to eq(1)
         expect(data.first['outgoing_url']).to eq(agent_bot.outgoing_url)
       end
+
+      it 'returns 200 and skips orphaned permissibles when an agent bot has been deleted' do
+        create(:platform_app_permissible, platform_app: platform_app, permissible: agent_bot)
+        # Use delete (not destroy!) to bypass dependent: :destroy callbacks so the
+        # permissible row survives — exactly the orphan scenario described in the issue.
+        agent_bot.delete
+
+        get '/platform/api/v1/agent_bots',
+            headers: { api_access_token: platform_app.access_token.token }, as: :json
+
+        expect(response).to have_http_status(:success)
+        expect(response.parsed_body).to be_empty
+      end
     end
   end
 
diff --git a/spec/models/agent_bot_spec.rb b/spec/models/agent_bot_spec.rb
index d3e5e2d6485..c3cf9a409f8 100644
--- a/spec/models/agent_bot_spec.rb
+++ b/spec/models/agent_bot_spec.rb
@@ -6,6 +6,7 @@ RSpec.describe AgentBot do
   describe 'associations' do
     it { is_expected.to have_many(:agent_bot_inboxes) }
     it { is_expected.to have_many(:inboxes) }
+    it { is_expected.to have_many(:platform_app_permissibles) }
   end
 
   describe 'concerns' do
@@ -38,6 +39,13 @@ RSpec.describe AgentBot do
 
       expect(message.reload.sender).to be_nil
     end
+
+    it 'destroys associated platform_app_permissibles' do
+      platform_app = create(:platform_app)
+      create(:platform_app_permissible, platform_app: platform_app, permissible: agent_bot)
+
+      expect { agent_bot.destroy! }.to change(PlatformAppPermissible, :count).by(-1)
+    end
   end
 
   describe '#system_bot?' do