diff --git a/lib/ccai.rb b/lib/ccai.rb
index 0191922..4006f38 100644
--- a/lib/ccai.rb
+++ b/lib/ccai.rb
@@ -11,6 +11,8 @@
 require 'ccai/email/email_service'
 require 'ccai/webhook/webhook_service'
 require 'ccai/contact/contact_service'
+require 'ccai/brand/brand_service'
+require 'ccai/campaign/campaign_service'
 
 # Main module for the CCAI Ruby client
 module CCAI
diff --git a/lib/ccai/brand/brand_service.rb b/lib/ccai/brand/brand_service.rb
new file mode 100644
index 0000000..7f2fed6
--- /dev/null
+++ b/lib/ccai/brand/brand_service.rb
@@ -0,0 +1,105 @@
+# frozen_string_literal: true
+
+# Copyright (c) 2025 CloudContactAI LLC
+# Licensed under the MIT License. See LICENSE in the project root for license information.
+
+module CCAI
+  module Brand
+    # Service for managing Brands (10DLC compliance)
+    class BrandService
+      # Create a new BrandService instance
+      #
+      # @param client [CCAI::Client] The parent CCAI client
+      def initialize(client)
+        @client = client
+      end
+
+      # Create a new brand
+      #
+      # @param brand [Hash] Brand attributes
+      # @return [Hash] API response
+      def create(brand)
+        validate!(brand)
+        @client.compliance_request(:post, '/v1/brands', brand)
+      end
+
+      # Get a brand by ID
+      #
+      # @param brand_id [String] Brand ID
+      # @return [Hash] API response
+      def get(brand_id)
+        raise ArgumentError, 'brandId is required' if brand_id.nil? || brand_id.to_s.empty?
+
+        @client.compliance_request(:get, "/v1/brands/#{brand_id}")
+      end
+
+      # List all brands for the account
+      #
+      # @return [Hash] API response
+      def list
+        @client.compliance_request(:get, '/v1/brands')
+      end
+
+      # Update a brand
+      #
+      # @param brand_id [String] Brand ID
+      # @param brand [Hash] Updated brand attributes
+      # @return [Hash] API response
+      def update(brand_id, brand)
+        raise ArgumentError, 'brandId is required' if brand_id.nil? || brand_id.to_s.empty?
+
+        validate!(brand, is_create: false)
+        @client.compliance_request(:patch, "/v1/brands/#{brand_id}", brand)
+      end
+
+      # Delete a brand
+      #
+      # @param brand_id [String] Brand ID
+      # @return [Hash] API response
+      def delete(brand_id)
+        raise ArgumentError, 'brandId is required' if brand_id.nil? || brand_id.to_s.empty?
+
+        @client.compliance_request(:delete, "/v1/brands/#{brand_id}")
+      end
+
+      private
+
+      REQUIRED_CREATE_FIELDS = %i[
+        legalCompanyName entityType taxId taxIdCountry country
+        verticalType websiteUrl street city state postalCode
+        contactFirstName contactLastName contactEmail contactPhone
+      ].freeze
+
+      def validate!(brand, is_create: true)
+        if is_create
+          REQUIRED_CREATE_FIELDS.each do |field|
+            val = brand[field] || brand[field.to_s]
+            raise ArgumentError, "#{field} is required" if val.nil? || val.to_s.strip.empty?
+          end
+        end
+
+        entity_type = brand[:entityType] || brand['entityType']
+        if entity_type == 'PUBLIC_PROFIT'
+          stock_symbol   = brand[:stockSymbol]  || brand['stockSymbol']
+          stock_exchange = brand[:stockExchange] || brand['stockExchange']
+          if stock_symbol.nil? || stock_symbol.to_s.empty?
+            raise ArgumentError, 'stockSymbol is required for PUBLIC_PROFIT entities'
+          end
+          if stock_exchange.nil? || stock_exchange.to_s.empty?
+            raise ArgumentError, 'stockExchange is required for PUBLIC_PROFIT entities'
+          end
+        end
+
+        website_url = brand[:websiteUrl] || brand['websiteUrl']
+        if website_url && !website_url.to_s.match?(/^https?:\/\//)
+          raise ArgumentError, 'websiteUrl must start with http:// or https://'
+        end
+
+        contact_email = brand[:contactEmail] || brand['contactEmail']
+        if contact_email && !contact_email.to_s.match?(/\A[^@\s]+@[^@\s]+\.[^@\s]+\z/)
+          raise ArgumentError, 'contactEmail must be a valid email address'
+        end
+      end
+    end
+  end
+end
diff --git a/lib/ccai/campaign/campaign_service.rb b/lib/ccai/campaign/campaign_service.rb
new file mode 100644
index 0000000..d9bb845
--- /dev/null
+++ b/lib/ccai/campaign/campaign_service.rb
@@ -0,0 +1,127 @@
+# frozen_string_literal: true
+
+# Copyright (c) 2025 CloudContactAI LLC
+# Licensed under the MIT License. See LICENSE in the project root for license information.
+
+module CCAI
+  module Campaign
+    # Service for managing Campaigns (10DLC compliance)
+    class CampaignService
+      # Create a new CampaignService instance
+      #
+      # @param client [CCAI::Client] The parent CCAI client
+      def initialize(client)
+        @client = client
+      end
+
+      # Create a new campaign
+      #
+      # @param campaign [Hash] Campaign attributes
+      # @return [Hash] API response
+      def create(campaign)
+        validate!(campaign, is_create: true)
+        @client.compliance_request(:post, '/v1/campaigns', campaign)
+      end
+
+      # Get a campaign by ID
+      #
+      # @param campaign_id [String] Campaign ID
+      # @return [Hash] API response
+      def get(campaign_id)
+        raise ArgumentError, 'campaignId is required' if campaign_id.nil? || campaign_id.to_s.empty?
+
+        @client.compliance_request(:get, "/v1/campaigns/#{campaign_id}")
+      end
+
+      # List all campaigns for the account
+      #
+      # @return [Hash] API response
+      def list
+        @client.compliance_request(:get, '/v1/campaigns')
+      end
+
+      # Update a campaign
+      #
+      # @param campaign_id [String] Campaign ID
+      # @param campaign [Hash] Updated campaign attributes
+      # @return [Hash] API response
+      def update(campaign_id, campaign)
+        raise ArgumentError, 'campaignId is required' if campaign_id.nil? || campaign_id.to_s.empty?
+
+        validate!(campaign, is_create: false)
+        @client.compliance_request(:patch, "/v1/campaigns/#{campaign_id}", campaign)
+      end
+
+      # Delete a campaign
+      #
+      # @param campaign_id [String] Campaign ID
+      # @return [Hash] API response
+      def delete(campaign_id)
+        raise ArgumentError, 'campaignId is required' if campaign_id.nil? || campaign_id.to_s.empty?
+
+        @client.compliance_request(:delete, "/v1/campaigns/#{campaign_id}")
+      end
+
+      private
+
+      REQUIRED_CREATE_FIELDS = %i[
+        brandId useCase description messageFlow
+        hasEmbeddedLinks hasEmbeddedPhone isAgeGated isDirectLending
+        optInKeywords optInMessage optInProofUrl
+        helpKeywords helpMessage
+        optOutKeywords optOutMessage
+        sampleMessages
+      ].freeze
+
+      def validate!(campaign, is_create: true)
+        if is_create
+          REQUIRED_CREATE_FIELDS.each do |field|
+            val = campaign.key?(field) ? campaign[field] : campaign[field.to_s]
+            raise ArgumentError, "#{field} is required" if val.nil?
+          end
+
+          brand_id = campaign.key?(:brandId) ? campaign[:brandId] : campaign['brandId']
+          raise ArgumentError, 'brandId is required' if brand_id.to_s.strip.empty?
+        end
+
+        sample_messages = campaign.key?(:sampleMessages) ? campaign[:sampleMessages] : campaign['sampleMessages']
+        if sample_messages
+          unless sample_messages.is_a?(Array) && sample_messages.length.between?(2, 5)
+            raise ArgumentError, 'sampleMessages must have between 2 and 5 items'
+          end
+
+          opt_out_keywords = (campaign[:optOutKeywords] || campaign['optOutKeywords'] || []).map(&:upcase)
+          help_keywords    = (campaign[:helpKeywords]   || campaign['helpKeywords']   || []).map(&:upcase)
+
+          has_stop = sample_messages.any? do |m|
+            msg = m.to_s.upcase
+            msg.include?('REPLY STOP') || opt_out_keywords.any? { |kw| msg.include?("REPLY #{kw}") }
+          end
+          raise ArgumentError, 'at least one sampleMessage must contain "Reply STOP" or an optOutKeyword' unless has_stop
+
+          has_help = sample_messages.any? do |m|
+            msg = m.to_s.upcase
+            msg.include?('REPLY HELP') || help_keywords.any? { |kw| msg.include?("REPLY #{kw}") }
+          end
+          raise ArgumentError, 'at least one sampleMessage must contain "Reply HELP" or a helpKeyword' unless has_help
+        end
+
+        opt_out_msg = campaign[:optOutMessage] || campaign['optOutMessage']
+        if opt_out_msg
+          opt_out_keywords = (campaign[:optOutKeywords] || campaign['optOutKeywords'] || []).map(&:upcase)
+          unless opt_out_msg.to_s.upcase.include?('STOP') || opt_out_keywords.any? { |kw| opt_out_msg.to_s.upcase.include?(kw) }
+            raise ArgumentError, 'optOutMessage must contain "STOP" or an optOutKeyword'
+          end
+        end
+
+        use_case = campaign[:useCase] || campaign['useCase']
+        if use_case && %w[MIXED LOW_VOLUME_MIXED].include?(use_case.to_s)
+          sub_use_cases = campaign[:subUseCases] || campaign['subUseCases']
+          unless sub_use_cases.is_a?(Array) && sub_use_cases.length.between?(2, 3)
+            raise ArgumentError, 'MIXED/LOW_VOLUME_MIXED campaigns require 2-3 subUseCases'
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/ccai/client.rb b/lib/ccai/client.rb
index 271876c..0e1149f 100644
--- a/lib/ccai/client.rb
+++ b/lib/ccai/client.rb
@@ -10,21 +10,25 @@
 require 'ccai/email/email_service'
 require 'ccai/webhook/webhook_service'
 require 'ccai/contact/contact_service'
+require 'ccai/brand/brand_service'
+require 'ccai/campaign/campaign_service'
 
 module CCAI
   # Configuration for the CCAI client
   class Config
-    attr_reader :client_id, :api_key, :base_url, :email_base_url, :files_base_url, :use_test_environment
+    attr_reader :client_id, :api_key, :base_url, :email_base_url, :files_base_url, :compliance_base_url, :use_test_environment
 
     # Production URLs
-    PROD_BASE_URL  = 'https://core.cloudcontactai.com/api'
-    PROD_EMAIL_URL = 'https://email-campaigns.cloudcontactai.com/api/v1'
-    PROD_FILES_URL = 'https://files.cloudcontactai.com'
+    PROD_BASE_URL        = 'https://core.cloudcontactai.com/api'
+    PROD_EMAIL_URL       = 'https://email-campaigns.cloudcontactai.com/api/v1'
+    PROD_FILES_URL       = 'https://files.cloudcontactai.com'
+    PROD_COMPLIANCE_URL  = 'https://compliance.cloudcontactai.com/api'
 
     # Test environment URLs
-    TEST_BASE_URL  = 'https://core-test-cloudcontactai.allcode.com/api'
-    TEST_EMAIL_URL = 'https://email-campaigns-test-cloudcontactai.allcode.com/api/v1'
-    TEST_FILES_URL = 'https://files-test-cloudcontactai.allcode.com'
+    TEST_BASE_URL        = 'https://core-test-cloudcontactai.allcode.com/api'
+    TEST_EMAIL_URL       = 'https://email-campaigns-test-cloudcontactai.allcode.com/api/v1'
+    TEST_FILES_URL       = 'https://files-test-cloudcontactai.allcode.com'
+    TEST_COMPLIANCE_URL  = 'https://compliance-test-cloudcontactai.allcode.com/api'
 
     # Create a new configuration
     #
@@ -34,7 +38,8 @@ class Config
     # @param base_url [String, nil] Override base URL for the core API
     # @param email_base_url [String, nil] Override base URL for the Email API
     # @param files_base_url [String, nil] Override base URL for the Files API
-    def initialize(client_id:, api_key:, use_test_environment: false, base_url: nil, email_base_url: nil, files_base_url: nil)
+    # @param compliance_base_url [String, nil] Override base URL for the Compliance API
+    def initialize(client_id:, api_key:, use_test_environment: false, base_url: nil, email_base_url: nil, files_base_url: nil, compliance_base_url: nil)
       @client_id = client_id
       @api_key = api_key
       @use_test_environment = use_test_environment
@@ -51,12 +56,16 @@ def initialize(client_id:, api_key:, use_test_environment: false, base_url: nil,
       @files_base_url = files_base_url ||
                         ENV.fetch('CCAI_FILES_BASE_URL', nil) ||
                         (use_test_environment ? TEST_FILES_URL : PROD_FILES_URL)
+
+      @compliance_base_url = compliance_base_url ||
+                             ENV.fetch('CCAI_COMPLIANCE_BASE_URL', nil) ||
+                             (use_test_environment ? TEST_COMPLIANCE_URL : PROD_COMPLIANCE_URL)
     end
   end
 
   # Main client for interacting with the CloudContactAI API
   class Client
-    attr_reader :config, :sms, :mms, :email, :webhook, :contact
+    attr_reader :config, :sms, :mms, :email, :webhook, :contact, :brand, :campaign
 
     # Create a new CCAI client instance
     #
@@ -88,6 +97,12 @@ def initialize(config)
 
       # Initialize the Contact service
       @contact = Contact::ContactService.new(self)
+
+      # Initialize the Brand service
+      @brand = Brand::BrandService.new(self)
+
+      # Initialize the Campaign service
+      @campaign = Campaign::CampaignService.new(self)
     end
 
     # Get the client ID
@@ -125,6 +140,13 @@ def files_base_url
       @config.files_base_url
     end
 
+    # Get the base URL for the Compliance API
+    #
+    # @return [String] Compliance base URL
+    def compliance_base_url
+      @config.compliance_base_url
+    end
+
     # Whether the test environment is active
     #
     # @return [Boolean]
@@ -155,8 +177,31 @@ def request(method, endpoint, data = nil, headers = nil)
         raise Error.new("Request failed: #{e.message}")
       end
     end
+
+    # Make an authenticated API request to the Compliance API
+    #
+    # @param method [Symbol] HTTP method (:get, :post, etc.)
+    # @param endpoint [String] API endpoint
+    # @param data [Hash, nil] Request data
+    # @return [Hash] API response
+    # @raise [CCAI::Error] If the API returns an error
+    def compliance_request(method, endpoint, data = nil)
+      url = "#{@config.compliance_base_url}#{endpoint}"
+
+      begin
+        response = @connection.run_request(method, url, data ? data.to_json : nil, nil)
+
+        if response.success?
+          response.body.nil? || response.body.empty? ? {} : JSON.parse(response.body)
+        else
+          raise Error.new("API Error: #{response.status} - #{response.body}")
+        end
+      rescue Faraday::Error => e
+        raise Error.new("Request failed: #{e.message}")
+      end
+    end
   end
 
   # Base error class for CCAI errors
   class Error < StandardError; end
-end
+end
\ No newline at end of file