diff --git a/modules/accredited_representative_portal/app/controllers/accredited_representative_portal/v0/power_of_attorney_requests_controller.rb b/modules/accredited_representative_portal/app/controllers/accredited_representative_portal/v0/power_of_attorney_requests_controller.rb
index 867b3db8d32..2f0dc0a512a 100644
--- a/modules/accredited_representative_portal/app/controllers/accredited_representative_portal/v0/power_of_attorney_requests_controller.rb
+++ b/modules/accredited_representative_portal/app/controllers/accredited_representative_portal/v0/power_of_attorney_requests_controller.rb
@@ -3,53 +3,16 @@
 module AccreditedRepresentativePortal
   module V0
     class PowerOfAttorneyRequestsController < ApplicationController
-      POA_REQUEST_ITEM_MOCK_DATA = {
-        status: 'Pending',
-        declinedReason: nil,
-        powerOfAttorneyCode: '091',
-        submittedAt: '2024-04-30T11:03:17Z',
-        acceptedOrDeclinedAt: nil,
-        isAddressChangingAuthorized: false,
-        isTreatmentDisclosureAuthorized: true,
-        veteran: {
-          firstName: 'Jon',
-          middleName: nil,
-          lastName: 'Smith',
-          participantId: '6666666666666'
-        },
-        representative: {
-          email: 'j2@example.com',
-          firstName: 'Jane',
-          lastName: 'Doe'
-        },
-        claimant: {
-          firstName: 'Sam',
-          lastName: 'Smith',
-          participantId: '777777777777777',
-          relationshipToVeteran: 'Child'
-        },
-        claimantAddress: {
-          city: 'Hartford',
-          state: 'CT',
-          zip: '06107',
-          country: 'GU',
-          militaryPostOffice: nil,
-          militaryPostalCode: nil
-        }
-      }.freeze
-
-      POA_REQUEST_LIST_MOCK_DATA = [
-        POA_REQUEST_ITEM_MOCK_DATA,
-        POA_REQUEST_ITEM_MOCK_DATA,
-        POA_REQUEST_ITEM_MOCK_DATA
-      ].freeze
-
       def index
-        render json: POA_REQUEST_LIST_MOCK_DATA
+        poa_requests = PowerOfAttorneyRequest.includes(resolution: :resolving).limit(100)
+        render json: PowerOfAttorneyRequestSerializer.new(poa_requests).serializable_hash, status: :ok
       end
 
       def show
-        render json: POA_REQUEST_ITEM_MOCK_DATA
+        poa_request = PowerOfAttorneyRequest.includes(resolution: :resolving).find(params[:id])
+        render json: PowerOfAttorneyRequestSerializer.new(poa_request).serializable_hash, status: :ok
+      rescue ActiveRecord::RecordNotFound
+        render json: { error: 'Record not found' }, status: :not_found
       end
     end
   end
diff --git a/modules/accredited_representative_portal/app/serializers/accredited_representative_portal/power_of_attorney_request_resolution_serializer.rb b/modules/accredited_representative_portal/app/serializers/accredited_representative_portal/power_of_attorney_request_resolution_serializer.rb
new file mode 100644
index 00000000000..99ce0602977
--- /dev/null
+++ b/modules/accredited_representative_portal/app/serializers/accredited_representative_portal/power_of_attorney_request_resolution_serializer.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+module AccreditedRepresentativePortal
+  class PowerOfAttorneyRequestResolutionSerializer
+    include JSONAPI::Serializer
+
+    attribute :id
+
+    attribute :type do |object|
+      object.resolving_type.demodulize.underscore.split('_').last
+    end
+
+    attribute :decision_type, if: proc { |obj| obj.resolving.respond_to?(:type) } do |object|
+      object.resolving.type
+    end
+
+    attribute :reason
+
+    attribute :creator_id, if: proc { |obj| obj.resolving.respond_to?(:creator_id) } do |object|
+      object.resolving.creator_id
+    end
+
+    attribute :created_at do |object|
+      object.created_at.iso8601
+    end
+  end
+end
diff --git a/modules/accredited_representative_portal/app/serializers/accredited_representative_portal/power_of_attorney_request_serializer.rb b/modules/accredited_representative_portal/app/serializers/accredited_representative_portal/power_of_attorney_request_serializer.rb
new file mode 100644
index 00000000000..4114143b6b1
--- /dev/null
+++ b/modules/accredited_representative_portal/app/serializers/accredited_representative_portal/power_of_attorney_request_serializer.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+module AccreditedRepresentativePortal
+  class PowerOfAttorneyRequestSerializer
+    include JSONAPI::Serializer
+
+    attributes :id, :claimant_id
+
+    attribute :created_at do |object|
+      object.created_at.iso8601
+    end
+
+    attribute :resolution do |object|
+      next nil if object.resolution.blank?
+
+      AccreditedRepresentativePortal::PowerOfAttorneyRequestResolutionSerializer.new(
+        object.resolution
+      ).serializable_hash[:data][:attributes]
+    end
+  end
+end
diff --git a/modules/accredited_representative_portal/spec/factories/power_of_attorney_decision.rb b/modules/accredited_representative_portal/spec/factories/power_of_attorney_decision.rb
index fd6f2e65d66..96066eafe0c 100644
--- a/modules/accredited_representative_portal/spec/factories/power_of_attorney_decision.rb
+++ b/modules/accredited_representative_portal/spec/factories/power_of_attorney_decision.rb
@@ -6,5 +6,13 @@
     id { Faker::Internet.uuid }
     association :creator, factory: :user_account
     type { 'Approval' }
+
+    trait :declination do
+      type { 'Declination' }
+    end
+
+    trait :approval do
+      type { 'Approval' }
+    end
   end
 end
diff --git a/modules/accredited_representative_portal/spec/factories/power_of_attorney_request.rb b/modules/accredited_representative_portal/spec/factories/power_of_attorney_request.rb
index 0aa23eea4f6..5d04780c575 100644
--- a/modules/accredited_representative_portal/spec/factories/power_of_attorney_request.rb
+++ b/modules/accredited_representative_portal/spec/factories/power_of_attorney_request.rb
@@ -5,5 +5,9 @@
     association :claimant, factory: :user_account
     id { Faker::Internet.uuid }
     created_at { Time.current }
+
+    trait :with_resolution do
+      resolution { create(:power_of_attorney_request_resolution, :with_decision) }
+    end
   end
 end
diff --git a/modules/accredited_representative_portal/spec/factories/power_of_attorney_request_resolution.rb b/modules/accredited_representative_portal/spec/factories/power_of_attorney_request_resolution.rb
index 20798bf1d54..1b7ca929b5a 100644
--- a/modules/accredited_representative_portal/spec/factories/power_of_attorney_request_resolution.rb
+++ b/modules/accredited_representative_portal/spec/factories/power_of_attorney_request_resolution.rb
@@ -3,12 +3,16 @@
 FactoryBot.define do
   factory :power_of_attorney_request_resolution,
           class: 'AccreditedRepresentativePortal::PowerOfAttorneyRequestResolution' do
-    association :power_of_attorney_request, factory: :power_of_attorney_request
-    resolving_id { SecureRandom.uuid }
-    reason_ciphertext { 'Encrypted Reason' }
+    association :power_of_attorney_request
+    resolving_type { 'AccreditedRepresentativePortal::PowerOfAttorneyRequestExpiration' }
+    reason { 'Test reason for resolution' }
     created_at { Time.current }
     encrypted_kms_key { SecureRandom.hex(16) }
 
+    after(:build) do |resolution|
+      resolution.id ||= SecureRandom.random_number(1000)
+    end
+
     trait :with_expiration do
       resolving_type { 'AccreditedRepresentativePortal::PowerOfAttorneyRequestExpiration' }
       resolving { create(:power_of_attorney_request_expiration) }
@@ -16,7 +20,13 @@
 
     trait :with_decision do
       resolving_type { 'AccreditedRepresentativePortal::PowerOfAttorneyRequestDecision' }
-      resolving { create(:power_of_attorney_request_decision) }
+      resolving { create(:power_of_attorney_request_decision, creator: create(:user_account)) }
+    end
+
+    trait :with_declination do
+      resolving_type { 'AccreditedRepresentativePortal::PowerOfAttorneyRequestDecision' }
+      reason { "Didn't authorize treatment record disclosure" }
+      resolving { create(:power_of_attorney_request_decision, creator: create(:user_account)) }
     end
 
     trait :with_invalid_type do
diff --git a/modules/accredited_representative_portal/spec/requests/accredited_representative_portal/v0/power_of_attorney_requests_spec.rb b/modules/accredited_representative_portal/spec/requests/accredited_representative_portal/v0/power_of_attorney_requests_spec.rb
index c1349f2db60..b9f4f6f2b58 100644
--- a/modules/accredited_representative_portal/spec/requests/accredited_representative_portal/v0/power_of_attorney_requests_spec.rb
+++ b/modules/accredited_representative_portal/spec/requests/accredited_representative_portal/v0/power_of_attorney_requests_spec.rb
@@ -4,28 +4,8 @@
 
 RSpec.describe AccreditedRepresentativePortal::V0::PowerOfAttorneyRequestsController, type: :request do
   let(:test_user) { create(:representative_user) }
-  let(:poa_request_details_id) { '123' }
-  let(:poa_request_details_mock_data) do
-    {
-      'status' => 'Pending',
-      'declinedReason' => nil,
-      'powerOfAttorneyCode' => '091',
-      'submittedAt' => '2024-04-30T11:03:17Z',
-      'acceptedOrDeclinedAt' => nil,
-      'isAddressChangingAuthorized' => false,
-      'isTreatmentDisclosureAuthorized' => true,
-      'veteran' => { 'firstName' => 'Jon', 'middleName' => nil, 'lastName' => 'Smith',
-                     'participantId' => '6666666666666' },
-      'representative' => { 'email' => 'j2@example.com', 'firstName' => 'Jane', 'lastName' => 'Doe' },
-      'claimant' => { 'firstName' => 'Sam', 'lastName' => 'Smith', 'participantId' => '777777777777777',
-                      'relationshipToVeteran' => 'Child' },
-      'claimantAddress' => { 'city' => 'Hartford', 'state' => 'CT', 'zip' => '06107', 'country' => 'GU',
-                             'militaryPostOffice' => nil, 'militaryPostalCode' => nil }
-    }
-  end
-  let(:poa_request_list_mock_data) do
-    [poa_request_details_mock_data, poa_request_details_mock_data, poa_request_details_mock_data]
-  end
+  let(:poa_request) { create(:power_of_attorney_request) }
+  let(:poa_requests) { create_list(:power_of_attorney_request, 3) }
 
   before do
     Flipper.enable(:accredited_representative_portal_pilot)
@@ -33,18 +13,34 @@
   end
 
   describe 'GET /accredited_representative_portal/v0/power_of_attorney_requests' do
-    it 'returns the list of a power of attorney request' do
+    it 'returns the list of power of attorney requests' do
+      poa_requests
+
       get('/accredited_representative_portal/v0/power_of_attorney_requests')
+
       expect(response).to have_http_status(:ok)
-      expect(JSON.parse(response.body)).to eq(poa_request_list_mock_data)
+      parsed_response = JSON.parse(response.body)
+
+      expected_response = AccreditedRepresentativePortal::PowerOfAttorneyRequestSerializer
+                          .new(poa_requests)
+                          .serializable_hash
+
+      expect(parsed_response.to_json).to eq(expected_response.to_json)
     end
   end
 
   describe 'GET /accredited_representative_portal/v0/power_of_attorney_requests/:id' do
-    it 'returns the details of a power of attorney request' do
-      get("/accredited_representative_portal/v0/power_of_attorney_requests/#{poa_request_details_id}")
+    it 'returns the details of a specific power of attorney request' do
+      get("/accredited_representative_portal/v0/power_of_attorney_requests/#{poa_request.id}")
+
       expect(response).to have_http_status(:ok)
-      expect(JSON.parse(response.body)).to include(poa_request_details_mock_data)
+      parsed_response = JSON.parse(response.body)
+
+      expected_response = AccreditedRepresentativePortal::PowerOfAttorneyRequestSerializer
+                          .new(poa_request)
+                          .serializable_hash
+
+      expect(parsed_response.to_json).to eq(expected_response.to_json)
     end
   end
 end
diff --git a/modules/accredited_representative_portal/spec/serializers/accredited_representative_portal/power_of_attorney_request_resolution_serializer_spec.rb b/modules/accredited_representative_portal/spec/serializers/accredited_representative_portal/power_of_attorney_request_resolution_serializer_spec.rb
new file mode 100644
index 00000000000..3df2538fd8b
--- /dev/null
+++ b/modules/accredited_representative_portal/spec/serializers/accredited_representative_portal/power_of_attorney_request_resolution_serializer_spec.rb
@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+require_relative '../../rails_helper'
+
+RSpec.describe AccreditedRepresentativePortal::PowerOfAttorneyRequestResolutionSerializer, type: :serializer do
+  describe 'serialization' do
+    subject { described_class.new(resolution).serializable_hash[:data][:attributes] }
+
+    let(:user) { create(:user_account) }
+    let(:resolution) do
+      create(:power_of_attorney_request_resolution, resolving: resolving, reason: 'Did not authorize')
+    end
+
+    context 'when resolving is a Decision' do
+      let(:resolving) { create(:power_of_attorney_request_decision, type: 'declination', creator: user) }
+
+      it 'serializes resolution with decision-specific fields' do
+        expect(subject).to eq(
+          id: resolution.id,
+          created_at: resolution.created_at.iso8601,
+          reason: 'Did not authorize',
+          type: 'decision',
+          decision_type: 'declination',
+          creator_id: user.id
+        )
+      end
+    end
+
+    context 'when resolving is an Expiration' do
+      let(:resolving) { create(:power_of_attorney_request_expiration) }
+
+      it 'serializes resolution with expiration-specific fields' do
+        expect(subject).to eq(
+          id: resolution.id,
+          created_at: resolution.created_at.iso8601,
+          reason: 'Did not authorize',
+          type: 'expiration'
+        )
+      end
+    end
+  end
+end
diff --git a/modules/accredited_representative_portal/spec/serializers/accredited_representative_portal/power_of_attorney_request_serializer_spec.rb b/modules/accredited_representative_portal/spec/serializers/accredited_representative_portal/power_of_attorney_request_serializer_spec.rb
new file mode 100644
index 00000000000..b923cf977bd
--- /dev/null
+++ b/modules/accredited_representative_portal/spec/serializers/accredited_representative_portal/power_of_attorney_request_serializer_spec.rb
@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+require_relative '../../rails_helper'
+
+RSpec.describe AccreditedRepresentativePortal::PowerOfAttorneyRequestSerializer, type: :serializer do
+  describe 'serialization' do
+    subject { described_class.new(poa_request).serializable_hash[:data][:attributes] }
+
+    let(:claimant) { create(:user_account) }
+    let(:poa_request) { create(:power_of_attorney_request, claimant: claimant, resolution: resolution) }
+
+    context 'when resolution exists' do
+      let(:resolution) do
+        create(:power_of_attorney_request_resolution,
+               resolving: create(:power_of_attorney_request_decision, type: 'declination'))
+      end
+
+      it 'serializes POA request with resolution' do
+        expect(subject).to eq(
+          id: poa_request.id,
+          claimant_id: poa_request.claimant_id,
+          created_at: poa_request.created_at.iso8601,
+          resolution: {
+            id: resolution.id,
+            created_at: resolution.created_at.iso8601,
+            reason: resolution.reason,
+            type: 'decision',
+            decision_type: 'declination',
+            creator_id: resolution.resolving.creator_id
+          }
+        )
+      end
+    end
+
+    context 'when resolution is absent' do
+      let(:resolution) { nil }
+
+      it 'serializes POA request without resolution' do
+        expect(subject).to eq(
+          id: poa_request.id,
+          claimant_id: poa_request.claimant_id,
+          created_at: poa_request.created_at.iso8601,
+          resolution: nil
+        )
+      end
+    end
+  end
+end