diff --git a/.formatter.exs b/.formatter.exs
index ef8840c..9f4639b 100644
--- a/.formatter.exs
+++ b/.formatter.exs
@@ -2,5 +2,9 @@
   import_deps: [:ecto, :ecto_sql, :phoenix],
   subdirectories: ["priv/*/migrations"],
   plugins: [Phoenix.LiveView.HTMLFormatter],
-  inputs: ["*.{heex,ex,exs}", "{config,lib,test}/**/*.{heex,ex,exs}", "priv/*/seeds.exs"]
+  inputs: [
+    "*.{heex,ex,exs}",
+    "{core,extensions,config,lib,test}/**/*.{heex,ex,exs}",
+    "priv/*/seeds.exs"
+  ]
 ]
diff --git a/config/config.exs b/config/config.exs
index 87faebb..f8e9757 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -9,7 +9,8 @@ import Config
 
 config :phoenix_extensions,
   ecto_repos: [PhoenixExtensions.Repo],
-  generators: [timestamp_type: :utc_datetime]
+  generators: [timestamp_type: :utc_datetime],
+  extensions: [PhoenixExtensions.Extensions.TelegramBot]
 
 # Configures the endpoint
 config :phoenix_extensions, PhoenixExtensionsWeb.Endpoint,
@@ -64,3 +65,8 @@ config :phoenix, :json_library, Jason
 # Import environment specific config. This must remain at the bottom
 # of this file so it overrides the configuration defined above.
 import_config "#{config_env()}.exs"
+
+# Import Telegram Bot Extension Config
+import_config ["extensions", "telegram_bot", "config", "#{config_env()}.exs"]
+              |> Path.join()
+              |> Path.expand()
diff --git a/core/.formatter.exs b/core/.formatter.exs
new file mode 100644
index 0000000..d2cda26
--- /dev/null
+++ b/core/.formatter.exs
@@ -0,0 +1,4 @@
+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]
diff --git a/core/.gitignore b/core/.gitignore
new file mode 100644
index 0000000..17ce19a
--- /dev/null
+++ b/core/.gitignore
@@ -0,0 +1,23 @@
+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where third-party dependencies like ExDoc output generated docs.
+/doc/
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+core-*.tar
+
+# Temporary files, for example, from tests.
+/tmp/
diff --git a/core/lib/core.ex b/core/lib/core.ex
new file mode 100644
index 0000000..1c53942
--- /dev/null
+++ b/core/lib/core.ex
@@ -0,0 +1,18 @@
+defmodule Core do
+  @moduledoc """
+  Documentation for `Core`.
+  """
+
+  @doc """
+  Hello world.
+
+  ## Examples
+
+      iex> Core.hello()
+      :world
+
+  """
+  def hello do
+    :world
+  end
+end
diff --git a/core/mix.exs b/core/mix.exs
new file mode 100644
index 0000000..9c748e1
--- /dev/null
+++ b/core/mix.exs
@@ -0,0 +1,28 @@
+defmodule Core.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :phoenix_extensions_core,
+      version: "0.1.0",
+      elixir: "~> 1.18",
+      start_permanent: Mix.env() == :prod,
+      deps: deps()
+    ]
+  end
+
+  # Run "mix help compile.app" to learn about applications.
+  def application do
+    [
+      extra_applications: [:logger]
+    ]
+  end
+
+  # Run "mix help deps" to learn about dependencies.
+  defp deps do
+    [
+      # {:dep_from_hexpm, "~> 0.3.0"},
+      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
+    ]
+  end
+end
diff --git a/core/test/core_test.exs b/core/test/core_test.exs
new file mode 100644
index 0000000..661aff1
--- /dev/null
+++ b/core/test/core_test.exs
@@ -0,0 +1,8 @@
+defmodule CoreTest do
+  use ExUnit.Case
+  doctest Core
+
+  test "greets the world" do
+    assert Core.hello() == :world
+  end
+end
diff --git a/core/test/test_helper.exs b/core/test/test_helper.exs
new file mode 100644
index 0000000..869559e
--- /dev/null
+++ b/core/test/test_helper.exs
@@ -0,0 +1 @@
+ExUnit.start()
diff --git a/extensions/telegram_bot/.formatter.exs b/extensions/telegram_bot/.formatter.exs
new file mode 100644
index 0000000..d2cda26
--- /dev/null
+++ b/extensions/telegram_bot/.formatter.exs
@@ -0,0 +1,4 @@
+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]
diff --git a/extensions/telegram_bot/.gitignore b/extensions/telegram_bot/.gitignore
new file mode 100644
index 0000000..40c6054
--- /dev/null
+++ b/extensions/telegram_bot/.gitignore
@@ -0,0 +1,23 @@
+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where third-party dependencies like ExDoc output generated docs.
+/doc/
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+extension_telegram_bot-*.tar
+
+# Temporary files, for example, from tests.
+/tmp/
diff --git a/extensions/telegram_bot/README.md b/extensions/telegram_bot/README.md
new file mode 100644
index 0000000..04e54fc
--- /dev/null
+++ b/extensions/telegram_bot/README.md
@@ -0,0 +1,21 @@
+# ExtensionTelegramBot
+
+**TODO: Add description**
+
+## Installation
+
+If [available in Hex](https://hex.pm/docs/publish), the package can be installed
+by adding `extension_telegram_bot` to your list of dependencies in `mix.exs`:
+
+```elixir
+def deps do
+  [
+    {:extension_telegram_bot, "~> 0.1.0"}
+  ]
+end
+```
+
+Documentation can be generated with [ExDoc](https://github.com/elixir-lang/ex_doc)
+and published on [HexDocs](https://hexdocs.pm). Once published, the docs can
+be found at <https://hexdocs.pm/extension_telegram_bot>.
+
diff --git a/extensions/telegram_bot/config/dev.exs b/extensions/telegram_bot/config/dev.exs
new file mode 100644
index 0000000..e69de29
diff --git a/extensions/telegram_bot/config/prod.exs b/extensions/telegram_bot/config/prod.exs
new file mode 100644
index 0000000..e69de29
diff --git a/extensions/telegram_bot/config/test.exs b/extensions/telegram_bot/config/test.exs
new file mode 100644
index 0000000..e69de29
diff --git a/extensions/telegram_bot/lib/extension.ex b/extensions/telegram_bot/lib/extension.ex
new file mode 100644
index 0000000..e3c9c5f
--- /dev/null
+++ b/extensions/telegram_bot/lib/extension.ex
@@ -0,0 +1,10 @@
+defmodule PhoenixExtensions.Extensions.TelegramBot do
+  @moduledoc false
+
+  require Logger
+
+  def init() do
+    Logger.info("Telegram Bot Extension Initialized")
+    :ok
+  end
+end
diff --git a/extensions/telegram_bot/lib/web/controllers/controller.ex b/extensions/telegram_bot/lib/web/controllers/controller.ex
new file mode 100644
index 0000000..e69de29
diff --git a/extensions/telegram_bot/lib/web/router.ex b/extensions/telegram_bot/lib/web/router.ex
new file mode 100644
index 0000000..e69de29
diff --git a/extensions/telegram_bot/mix.exs b/extensions/telegram_bot/mix.exs
new file mode 100644
index 0000000..bd0065f
--- /dev/null
+++ b/extensions/telegram_bot/mix.exs
@@ -0,0 +1,30 @@
+defmodule PhoenixExtensions.Extensions.TelegramBot.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :extension_telegram_bot,
+      version: "0.1.0",
+      elixir: "~> 1.18",
+      start_permanent: Mix.env() == :prod,
+      deps: deps()
+    ]
+  end
+
+  # Run "mix help compile.app" to learn about applications.
+  def application do
+    [
+      extra_applications: [:logger]
+    ]
+  end
+
+  # Run "mix help deps" to learn about dependencies.
+  defp deps do
+    [
+      {:phoenix_extensions_core, path: Path.expand(Path.join(["..", "..", "core"]))},
+      {:phoenix, "~> 1.7.18"}
+      # {:dep_from_hexpm, "~> 0.3.0"},
+      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
+    ]
+  end
+end
diff --git a/extensions/telegram_bot/test/telegram_bot_test.exs b/extensions/telegram_bot/test/telegram_bot_test.exs
new file mode 100644
index 0000000..4578924
--- /dev/null
+++ b/extensions/telegram_bot/test/telegram_bot_test.exs
@@ -0,0 +1,8 @@
+defmodule PhoenixExtensions.Extensions.TelegramBotTest do
+  use ExUnit.Case
+  doctest ExtensionTelegramBot
+
+  test "greets the world" do
+    assert ExtensionTelegramBot.hello() == :world
+  end
+end
diff --git a/extensions/telegram_bot/test/test_helper.exs b/extensions/telegram_bot/test/test_helper.exs
new file mode 100644
index 0000000..869559e
--- /dev/null
+++ b/extensions/telegram_bot/test/test_helper.exs
@@ -0,0 +1 @@
+ExUnit.start()
diff --git a/lib/phoenix_extensions/application.ex b/lib/phoenix_extensions/application.ex
index 3a2d6ac..591a441 100644
--- a/lib/phoenix_extensions/application.ex
+++ b/lib/phoenix_extensions/application.ex
@@ -11,9 +11,9 @@ defmodule PhoenixExtensions.Application do
       PhoenixExtensionsWeb.Telemetry,
       PhoenixExtensions.Repo,
       {Ecto.Migrator,
-        repos: Application.fetch_env!(:phoenix_extensions, :ecto_repos),
-        skip: skip_migrations?()},
-      {DNSCluster, query: Application.get_env(:phoenix_extensions, :dns_cluster_query) || :ignore},
+       repos: Application.fetch_env!(:phoenix_extensions, :ecto_repos), skip: skip_migrations?()},
+      {DNSCluster,
+       query: Application.get_env(:phoenix_extensions, :dns_cluster_query) || :ignore},
       {Phoenix.PubSub, name: PhoenixExtensions.PubSub},
       # Start the Finch HTTP client for sending emails
       {Finch, name: PhoenixExtensions.Finch},
@@ -23,6 +23,11 @@ defmodule PhoenixExtensions.Application do
       PhoenixExtensionsWeb.Endpoint
     ]
 
+    # Initialize extensions
+    Enum.each(Application.get_env(:phoenix_extensions, :extensions, []), fn extension ->
+      extension.init()
+    end)
+
     # See https://hexdocs.pm/elixir/Supervisor.html
     # for other strategies and supported options
     opts = [strategy: :one_for_one, name: PhoenixExtensions.Supervisor]
diff --git a/mix.exs b/mix.exs
index dd2acc3..95d94c4 100644
--- a/mix.exs
+++ b/mix.exs
@@ -27,6 +27,13 @@ defmodule PhoenixExtensions.MixProject do
   defp elixirc_paths(:test), do: ["lib", "test/support"]
   defp elixirc_paths(_), do: ["lib"]
 
+  # Specifies your project extensions.
+  defp extensions do
+    [
+      {:extension_telegram_bot, path: Path.join(["extensions", "telegram_bot"])}
+    ]
+  end
+
   # Specifies your project dependencies.
   #
   # Type `mix help deps` for examples and options.
@@ -58,7 +65,7 @@ defmodule PhoenixExtensions.MixProject do
       {:jason, "~> 1.2"},
       {:dns_cluster, "~> 0.1.1"},
       {:bandit, "~> 1.5"}
-    ]
+    ] ++ extensions()
   end
 
   # Aliases are shortcuts or tasks specific to the current project.
diff --git a/test/phoenix_extensions_web/controllers/error_html_test.exs b/test/phoenix_extensions_web/controllers/error_html_test.exs
index 2fcc5f0..6f23286 100644
--- a/test/phoenix_extensions_web/controllers/error_html_test.exs
+++ b/test/phoenix_extensions_web/controllers/error_html_test.exs
@@ -9,6 +9,7 @@ defmodule PhoenixExtensionsWeb.ErrorHTMLTest do
   end
 
   test "renders 500.html" do
-    assert render_to_string(PhoenixExtensionsWeb.ErrorHTML, "500", "html", []) == "Internal Server Error"
+    assert render_to_string(PhoenixExtensionsWeb.ErrorHTML, "500", "html", []) ==
+             "Internal Server Error"
   end
 end
diff --git a/test/phoenix_extensions_web/controllers/error_json_test.exs b/test/phoenix_extensions_web/controllers/error_json_test.exs
index 0d6beac..6d21e04 100644
--- a/test/phoenix_extensions_web/controllers/error_json_test.exs
+++ b/test/phoenix_extensions_web/controllers/error_json_test.exs
@@ -2,7 +2,9 @@ defmodule PhoenixExtensionsWeb.ErrorJSONTest do
   use PhoenixExtensionsWeb.ConnCase, async: true
 
   test "renders 404" do
-    assert PhoenixExtensionsWeb.ErrorJSON.render("404.json", %{}) == %{errors: %{detail: "Not Found"}}
+    assert PhoenixExtensionsWeb.ErrorJSON.render("404.json", %{}) == %{
+             errors: %{detail: "Not Found"}
+           }
   end
 
   test "renders 500" do