diff --git a/lib/trmnl/api/client.rb b/lib/trmnl/api/client.rb
new file mode 100644
index 0000000..bf0f21e
--- /dev/null
+++ b/lib/trmnl/api/client.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module TRMNL
+  module API
+    # Provides the primary client for making API requests.
+    class Client
+      include Dependencies[:settings]
+
+      include Endpoints::Dependencies[
+        endpoint_current_screen: :current_screen,
+        endpoint_display: :display,
+        endpoint_firmware: :firmware,
+        endpoint_log: :log,
+        endpoint_setup: :setup
+      ]
+
+      def initialize(**)
+        super
+        yield settings if block_given?
+      end
+
+      def current_screen(**) = endpoint_current_screen.call(**)
+
+      def display(**) = endpoint_display.call(**)
+
+      def firmware = endpoint_firmware.call
+
+      def log(**) = endpoint_log.call(**)
+
+      def setup(**) = endpoint_setup.call(**)
+    end
+  end
+end
diff --git a/spec/lib/trmnl/api/client_spec.rb b/spec/lib/trmnl/api/client_spec.rb
new file mode 100644
index 0000000..4de76d2
--- /dev/null
+++ b/spec/lib/trmnl/api/client_spec.rb
@@ -0,0 +1,78 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe TRMNL::API::Client do
+  subject(:client) { described_class.new }
+
+  include_context "with application dependencies"
+
+  describe "#initialize" do
+    it "answers original settings without block" do
+      client
+
+      expect(settings).to eq(
+        TRMNL::API::Configuration::Content[
+          content_type: "application/json",
+          uri: "https://trmnl.app/api"
+        ]
+      )
+    end
+
+    it "modifies settings with block" do
+      described_class.new { |settings| settings.uri = "https://api.test.io" }
+
+      expect(settings).to eq(
+        TRMNL::API::Configuration::Content[
+          content_type: "application/json",
+          uri: "https://api.test.io"
+        ]
+      )
+    end
+  end
+
+  describe "#current_screen" do
+    let(:endpoint) { instance_spy TRMNL::API::Endpoints::CurrentScreen }
+
+    it "messages endpoint" do
+      client = described_class.new endpoint_current_screen: endpoint
+      expect(client.current_screen(token: "abc")).to have_received(:call).with(token: "abc")
+    end
+  end
+
+  describe "#display" do
+    let(:endpoint) { instance_spy TRMNL::API::Endpoints::Display }
+
+    it "messages endpoint" do
+      client = described_class.new endpoint_display: endpoint
+      expect(client.display(token: "abc")).to have_received(:call).with(token: "abc")
+    end
+  end
+
+  describe "#firmware" do
+    let(:endpoint) { instance_spy TRMNL::API::Endpoints::Firmware }
+
+    it "messages endpoint" do
+      client = described_class.new endpoint_firmware: endpoint
+      expect(client.firmware).to have_received(:call)
+    end
+  end
+
+  describe "#log" do
+    let(:endpoint) { instance_spy TRMNL::API::Endpoints::Log }
+
+    it "messages endpoint" do
+      client = described_class.new endpoint_log: endpoint
+      expect(client.log(token: "abc", log: {})).to have_received(:call).with(token: "abc", log: {})
+    end
+  end
+
+  describe "#setup" do
+    let(:endpoint) { instance_spy TRMNL::API::Endpoints::Setup }
+
+    it "messages endpoint" do
+      client = described_class.new endpoint_setup: endpoint
+      expect(client.setup(id: "abc")).to have_received(:call).with(id: "abc")
+    end
+  end
+end