diff --git a/lib/trmnl/api/client.rb b/lib/trmnl/api/client.rb
new file mode 100644
index 0000000..e56c460
--- /dev/null
+++ b/lib/trmnl/api/client.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+require "dry/monads"
+require "http"
+
+module TRMNL
+  module API
+    # Provides a low level configurable and monadic API client.
+    # :reek:DataClump
+    class Client
+      include Dry::Monads[:result]
+
+      HEADERS = {}.freeze
+
+      def initialize settings: TRMNL::API::Configuration::Loader.new.call, http: HTTP
+        @settings = settings
+        @http = http
+
+        yield settings if block_given?
+      end
+
+      def get(path, headers: HEADERS, **params) = call(__method__, path, headers, params:)
+
+      def post(path, headers: HEADERS, **json) = call(__method__, path, headers, json:)
+
+      private
+
+      attr_reader :settings, :http
+
+      # rubocop:todo Metrics/ParameterLists
+      def call method, path, headers, **options
+        http.headers(settings.headers.merge(headers))
+            .public_send(method, "#{settings.uri}/#{path}", options)
+            .then { |response| response.status.success? ? Success(response) : Failure(response) }
+      end
+      # rubocop:enable Metrics/ParameterLists
+    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..70535fa
--- /dev/null
+++ b/spec/lib/trmnl/api/client_spec.rb
@@ -0,0 +1,108 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe TRMNL::API::Client do
+  using Refinements::Hash
+
+  subject(:client) { described_class.new http: }
+
+  describe "#initialize" do
+    it "initializes with block" do
+      client = described_class.new { |settings| settings.content_type = "application/xml" }
+      body = client.get("bogus").failure.to_s
+
+      expect(body).to include("Not Found")
+    end
+  end
+
+  describe "#get" do
+    context "with success" do
+      let :http do
+        HTTP::Fake::Client.new do
+          get "/api/current_screen" do
+            headers["Content-Type"] = "application/json"
+            status 200
+
+            <<~JSON
+              {
+                "status": 200,
+                "refresh_rate": 3200,
+                "image_url": "https://test.io/images/test.bmp",
+                "filename": "test.bmp",
+                "rendered_at": null
+              }
+            JSON
+          end
+        end
+      end
+
+      it "answers response" do
+        response = client.get "current_screen"
+        payload = response.fmap(&:parse).bind(&:symbolize_keys!)
+
+        expect(payload).to eq(
+          status: 200,
+          refresh_rate: 3200,
+          image_url: "https://test.io/images/test.bmp",
+          filename: "test.bmp",
+          rendered_at: nil
+        )
+      end
+    end
+
+    context "with custom header" do
+      let(:http) { class_spy HTTP, headers: HTTP }
+      let(:response) { instance_spy HTTP::Response }
+
+      it "includes custom header" do
+        client.get "current_screen", headers: {"ID" => "123"}
+
+        expect(http).to have_received(:headers).with(
+          "Content-Type" => "application/json",
+          "ID" => "123"
+        )
+      end
+    end
+
+    context "with failure" do
+      let :http do
+        HTTP::Fake::Client.new do
+          get "/api/current_screen" do
+            headers["Content-Type"] = "application/json"
+            status 404
+
+            <<~JSON
+              {
+                "message": "Danger!"
+              }
+            JSON
+          end
+        end
+      end
+
+      it "answers failure response" do
+        response = client.get "current_screen"
+        payload = response.alt_map { |result| result.parse.symbolize_keys! }
+
+        expect(payload).to be_failure(message: "Danger!")
+      end
+    end
+  end
+
+  describe "#post" do
+    let :http do
+      HTTP::Fake::Client.new do
+        post "/api/log" do
+          headers["Content-Type"] = "application/json"
+          status 204
+        end
+      end
+    end
+
+    it "answers response" do
+      result = client.post "log", log: {}
+      expect(result.success.status).to eq(204)
+    end
+  end
+end