diff --git a/app/controllers/api/v1/accounts/assignable_agents_controller.rb b/app/controllers/api/v1/accounts/assignable_agents_controller.rb
new file mode 100644
index 000000000..a712342dd
--- /dev/null
+++ b/app/controllers/api/v1/accounts/assignable_agents_controller.rb
@@ -0,0 +1,24 @@
+class Api::V1::Accounts::AssignableAgentsController < Api::V1::Accounts::BaseController
+  before_action :fetch_inboxes
+
+  def index
+    agent_ids = @inboxes.map do |inbox|
+      authorize inbox, :show?
+      member_ids = inbox.members.pluck(:user_id)
+      member_ids
+    end
+    agent_ids = agent_ids.inject(:&)
+    agents = Current.account.users.where(id: agent_ids)
+    @assignable_agents = (agents + Current.account.administrators).uniq
+  end
+
+  private
+
+  def fetch_inboxes
+    @inboxes = Current.account.inboxes.find(permitted_params[:inbox_ids])
+  end
+
+  def permitted_params
+    params.permit(inbox_ids: [])
+  end
+end
diff --git a/app/controllers/api/v1/accounts/inboxes_controller.rb b/app/controllers/api/v1/accounts/inboxes_controller.rb
index 66a71985d..4bc85546a 100644
--- a/app/controllers/api/v1/accounts/inboxes_controller.rb
+++ b/app/controllers/api/v1/accounts/inboxes_controller.rb
@@ -12,6 +12,7 @@ class Api::V1::Accounts::InboxesController < Api::V1::Accounts::BaseController
 
   def show; end
 
+  # Deprecated: This API will be removed in 2.7.0
   def assignable_agents
     @assignable_agents = (Current.account.users.where(id: @inbox.members.select(:user_id)) + Current.account.administrators).uniq
   end
diff --git a/app/javascript/dashboard/api/assignableAgents.js b/app/javascript/dashboard/api/assignableAgents.js
new file mode 100644
index 000000000..5b999facf
--- /dev/null
+++ b/app/javascript/dashboard/api/assignableAgents.js
@@ -0,0 +1,16 @@
+/* global axios */
+import ApiClient from './ApiClient';
+
+class AssignableAgents extends ApiClient {
+  constructor() {
+    super('assignable_agents', { accountScoped: true });
+  }
+
+  get(inboxIds) {
+    return axios.get(this.url, {
+      params: { inbox_ids: inboxIds },
+    });
+  }
+}
+
+export default new AssignableAgents();
diff --git a/app/javascript/dashboard/api/inboxes.js b/app/javascript/dashboard/api/inboxes.js
index 1cf6ba113..a76ef1414 100644
--- a/app/javascript/dashboard/api/inboxes.js
+++ b/app/javascript/dashboard/api/inboxes.js
@@ -6,10 +6,6 @@ class Inboxes extends ApiClient {
     super('inboxes', { accountScoped: true });
   }
 
-  getAssignableAgents(inboxId) {
-    return axios.get(`${this.url}/${inboxId}/assignable_agents`);
-  }
-
   getCampaigns(inboxId) {
     return axios.get(`${this.url}/${inboxId}/campaigns`);
   }
diff --git a/app/javascript/dashboard/api/specs/assignableAgents.spec.js b/app/javascript/dashboard/api/specs/assignableAgents.spec.js
new file mode 100644
index 000000000..6c9c5ec9a
--- /dev/null
+++ b/app/javascript/dashboard/api/specs/assignableAgents.spec.js
@@ -0,0 +1,18 @@
+import assignableAgentsAPI from '../assignableAgents';
+import describeWithAPIMock from './apiSpecHelper';
+
+describe('#AssignableAgentsAPI', () => {
+  describeWithAPIMock('API calls', context => {
+    it('#getAssignableAgents', () => {
+      assignableAgentsAPI.get([1]);
+      expect(context.axiosMock.get).toHaveBeenCalledWith(
+        '/api/v1/assignable_agents',
+        {
+          params: {
+            inbox_ids: [1],
+          },
+        }
+      );
+    });
+  });
+});
diff --git a/app/javascript/dashboard/api/specs/inboxes.spec.js b/app/javascript/dashboard/api/specs/inboxes.spec.js
index b261bb930..0d755d44a 100644
--- a/app/javascript/dashboard/api/specs/inboxes.spec.js
+++ b/app/javascript/dashboard/api/specs/inboxes.spec.js
@@ -10,17 +10,9 @@ describe('#InboxesAPI', () => {
     expect(inboxesAPI).toHaveProperty('create');
     expect(inboxesAPI).toHaveProperty('update');
     expect(inboxesAPI).toHaveProperty('delete');
-    expect(inboxesAPI).toHaveProperty('getAssignableAgents');
     expect(inboxesAPI).toHaveProperty('getCampaigns');
   });
   describeWithAPIMock('API calls', context => {
-    it('#getAssignableAgents', () => {
-      inboxesAPI.getAssignableAgents(1);
-      expect(context.axiosMock.get).toHaveBeenCalledWith(
-        '/api/v1/inboxes/1/assignable_agents'
-      );
-    });
-
     it('#getCampaigns', () => {
       inboxesAPI.getCampaigns(2);
       expect(context.axiosMock.get).toHaveBeenCalledWith(
diff --git a/app/javascript/dashboard/store/modules/inboxAssignableAgents.js b/app/javascript/dashboard/store/modules/inboxAssignableAgents.js
index 31a2d98d0..1acb6897a 100644
--- a/app/javascript/dashboard/store/modules/inboxAssignableAgents.js
+++ b/app/javascript/dashboard/store/modules/inboxAssignableAgents.js
@@ -1,6 +1,6 @@
 import Vue from 'vue';
 
-import InboxesAPI from 'dashboard/api/inboxes.js';
+import AssignableAgentsAPI from '../../api/assignableAgents';
 
 const state = {
   records: {},
@@ -31,7 +31,7 @@ export const actions = {
     try {
       const {
         data: { payload },
-      } = await InboxesAPI.getAssignableAgents(inboxId);
+      } = await AssignableAgentsAPI.get([inboxId]);
       commit(types.SET_INBOX_ASSIGNABLE_AGENTS, { inboxId, members: payload });
     } catch (error) {
       throw new Error(error);
diff --git a/app/views/api/v1/accounts/assignable_agents/index.json.jbuilder b/app/views/api/v1/accounts/assignable_agents/index.json.jbuilder
new file mode 100644
index 000000000..af71dea1e
--- /dev/null
+++ b/app/views/api/v1/accounts/assignable_agents/index.json.jbuilder
@@ -0,0 +1,5 @@
+json.payload do
+  json.array! @assignable_agents do |agent|
+    json.partial! 'api/v1/models/agent.json.jbuilder', resource: agent
+  end
+end
diff --git a/config/routes.rb b/config/routes.rb
index a80f6ca39..b2029a739 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -43,7 +43,7 @@ Rails.application.routes.draw do
           resource :bulk_actions, only: [:create]
           resources :agents, only: [:index, :create, :update, :destroy]
           resources :agent_bots, only: [:index, :create, :show, :update, :destroy]
-
+          resources :assignable_agents, only: [:index]
           resources :callbacks, only: [] do
             collection do
               post :register_facebook_page
diff --git a/spec/controllers/api/v1/accounts/assignable_agents_controller_spec.rb b/spec/controllers/api/v1/accounts/assignable_agents_controller_spec.rb
new file mode 100644
index 000000000..6f1a068ee
--- /dev/null
+++ b/spec/controllers/api/v1/accounts/assignable_agents_controller_spec.rb
@@ -0,0 +1,67 @@
+require 'rails_helper'
+
+RSpec.describe 'Assignable Agents API', type: :request do
+  let(:account) { create(:account) }
+  let(:agent1) { create(:user, account: account, role: :agent) }
+  let!(:agent2) { create(:user, account: account, role: :agent) }
+  let!(:admin) { create(:user, account: account, role: :administrator) }
+
+  describe 'GET /api/v1/accounts/{account.id}/assignable_agents' do
+    let(:inbox1) { create(:inbox, account: account) }
+    let(:inbox2) { create(:inbox, account: account) }
+
+    before do
+      create(:inbox_member, user: agent1, inbox: inbox1)
+      create(:inbox_member, user: agent1, inbox: inbox2)
+    end
+
+    context 'when it is an unauthenticated user' do
+      it 'returns unauthorized' do
+        get "/api/v1/accounts/#{account.id}/assignable_agents"
+
+        expect(response).to have_http_status(:unauthorized)
+      end
+    end
+
+    context 'when the user is not part of an inbox' do
+      context 'when the user is an admininstrator' do
+        it 'returns all assignable inbox members along with administrators' do
+          get "/api/v1/accounts/#{account.id}/assignable_agents",
+              params: { inbox_ids: [inbox1.id, inbox2.id] },
+              headers: admin.create_new_auth_token,
+              as: :json
+
+          expect(response).to have_http_status(:success)
+          response_data = JSON.parse(response.body, symbolize_names: true)[:payload]
+          expect(response_data.size).to eq(2)
+          expect(response_data.pluck(:role)).to include('agent', 'administrator')
+        end
+      end
+
+      context 'when the user is an agent' do
+        it 'returns unauthorized' do
+          get "/api/v1/accounts/#{account.id}/assignable_agents",
+              params: { inbox_ids: [inbox1.id, inbox2.id] },
+              headers: agent2.create_new_auth_token,
+              as: :json
+
+          expect(response).to have_http_status(:unauthorized)
+        end
+      end
+    end
+
+    context 'when the user is part of the inbox' do
+      it 'returns all assignable inbox members along with administrators' do
+        get "/api/v1/accounts/#{account.id}/assignable_agents",
+            params: { inbox_ids: [inbox1.id, inbox2.id] },
+            headers: agent1.create_new_auth_token,
+            as: :json
+
+        expect(response).to have_http_status(:success)
+        response_data = JSON.parse(response.body, symbolize_names: true)[:payload]
+        expect(response_data.size).to eq(2)
+        expect(response_data.pluck(:role)).to include('agent', 'administrator')
+      end
+    end
+  end
+end