diff --git a/pyproject.toml b/pyproject.toml
index 8ca18f8..4c82850 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,13 +16,18 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
 ]
-dependencies = []     # add all the dependencies here
+dependencies = [
+    "typer",
+]     # add all the dependencies here
 dynamic = ["readme", "version"]
 
 [project.urls]
 Changelog = "https://github.com/bo4e/BO4E-CLI/releases"
 Homepage = "https://github.com/bo4e/BO4E-CLI"
 
+[project.scripts]
+bo4e = "bo4e_cli.__main__"
+
 [tool.black]
 line-length = 120
 target_version = ["py311", "py312"]
diff --git a/src/bo4e_cli/__main__.py b/src/bo4e_cli/__main__.py
new file mode 100644
index 0000000..c7797a4
--- /dev/null
+++ b/src/bo4e_cli/__main__.py
@@ -0,0 +1,4 @@
+from bo4e_cli.commands.entry import app
+
+if __name__ == "__main__":
+    app()
diff --git a/src/bo4e_cli/commands/__init__.py b/src/bo4e_cli/commands/__init__.py
new file mode 100644
index 0000000..2e2d53f
--- /dev/null
+++ b/src/bo4e_cli/commands/__init__.py
@@ -0,0 +1,7 @@
+from .diff import sub_app_diff
+from .edit import edit
+from .entry import app
+from .generate import generate
+from .pull import pull
+
+app.add_typer(sub_app_diff, name="diff")
diff --git a/src/bo4e_cli/commands/diff.py b/src/bo4e_cli/commands/diff.py
new file mode 100644
index 0000000..5e7455b
--- /dev/null
+++ b/src/bo4e_cli/commands/diff.py
@@ -0,0 +1,21 @@
+from pathlib import Path
+from typing import Annotated, Optional
+
+import typer
+
+sub_app_diff = typer.Typer()
+
+
+@sub_app_diff.command("schemas")
+def diff_schemas(
+    *,
+    input_dir_base: Annotated[Path, typer.Argument()],
+    input_dir_comp: Annotated[Path, typer.Argument()],
+    output_file: Annotated[Path, typer.Option(help="The JSON-file to save the differences to.", show_default=False)],
+):
+    """
+    Compare the JSON-schemas in the two input directories and save the differences to the output file.
+    The output file will contain the differences in JSON-format. It will also contain information about the
+    compared versions.
+    """
+    pass
diff --git a/src/bo4e_cli/commands/edit.py b/src/bo4e_cli/commands/edit.py
new file mode 100644
index 0000000..0721aad
--- /dev/null
+++ b/src/bo4e_cli/commands/edit.py
@@ -0,0 +1,34 @@
+from pathlib import Path
+from typing import Annotated, Optional
+
+import typer
+
+from bo4e_cli.commands.entry import app
+
+
+@app.command()
+def edit(
+    *,
+    input_dir: Annotated[Path, typer.Option(help="The directory to read the JSON-schemas from.", show_default=False)],
+    output_dir: Annotated[
+        Path, typer.Option(help="The directory to save the edited JSON-schemas to.", show_default=False)
+    ],
+    config: Annotated[
+        Optional[Path], typer.Option(help="The configuration file to use for editing the JSON-schemas.")
+    ] = None,
+    set_default_version: Annotated[
+        bool,
+        typer.Option(
+            help="Automatically set or overrides the default version for '_version' fields with the version from "
+            ".version file. This is especially useful if you want to define additional models which should "
+            "always have the correct version."
+        ),
+    ] = True,
+    clear_output: Annotated[bool, typer.Option(help="Clear the output directory before saving the schemas.")] = True,
+):
+    """
+    Edit the JSON-schemas in the input directory and save the edited schemas to the output directory.
+    The schemas in the input directory won't be changed. If no configuration file is provided, the schemas will be
+    copied to the output directory unchanged.
+    """
+    pass
diff --git a/src/bo4e_cli/commands/entry.py b/src/bo4e_cli/commands/entry.py
new file mode 100644
index 0000000..e5ac6c0
--- /dev/null
+++ b/src/bo4e_cli/commands/entry.py
@@ -0,0 +1,3 @@
+import typer
+
+app = typer.Typer()
diff --git a/src/bo4e_cli/commands/generate.py b/src/bo4e_cli/commands/generate.py
new file mode 100644
index 0000000..91eec77
--- /dev/null
+++ b/src/bo4e_cli/commands/generate.py
@@ -0,0 +1,34 @@
+from enum import StrEnum
+from pathlib import Path
+from typing import Annotated, Optional
+
+import typer
+
+from bo4e_cli.commands.entry import app
+
+
+class GenerateType(StrEnum):
+    """
+    A custom type for the generate command.
+    """
+
+    PYTHON_PYDANTIC_V1 = "python-pydantic-v1"
+    PYTHON_PYDANTIC_V2 = "python-pydantic-v2"
+    PYTHON_SQL_MODEL = "python-sql-model"
+
+
+@app.command()
+def generate(
+    *,
+    input_dir: Annotated[Path, typer.Option(help="The directory to read the JSON-schemas from.", show_default=False)],
+    output_dir: Annotated[Path, typer.Option(help="The directory to save the generated code to.", show_default=False)],
+    output_type: Annotated[GenerateType, typer.Option(help="The type of code to generate.", show_default=False)],
+    clear_output: Annotated[
+        bool, typer.Option(help="Clear the output directory before saving the generated code.")
+    ] = True,
+):
+    """
+    Generate the BO4E models from the JSON-schemas in the input directory and save them in the output directory.
+    Several output types are available, see --output-type.
+    """
+    pass
diff --git a/src/bo4e_cli/commands/pull.py b/src/bo4e_cli/commands/pull.py
new file mode 100644
index 0000000..07dbc86
--- /dev/null
+++ b/src/bo4e_cli/commands/pull.py
@@ -0,0 +1,43 @@
+from pathlib import Path
+from typing import Annotated, Optional
+
+import typer
+
+from bo4e_cli.commands.entry import app
+
+
+@app.command()
+def pull(
+    *,
+    output_dir: Annotated[Path, typer.Option(help="The directory to save the JSON-schemas to.", show_default=False)],
+    version_tag: Annotated[
+        str,
+        typer.Option(
+            help="The BO4E-version tag to pull the data for. "
+            "They will be pulled from https://github.com/bo4e/BO4E-Schemas."
+        ),
+    ] = "latest",
+    update_refs: Annotated[
+        bool,
+        typer.Option(
+            help="Automatically update the references in the schemas. "
+            "Online references to BO4E-schemas will be replaced by relative paths."
+        ),
+    ] = True,
+    clear_output: Annotated[bool, typer.Option(help="Clear the output directory before saving the schemas.")] = True,
+    token: Annotated[
+        Optional[str],
+        typer.Option(
+            help="A GitHub Access token to authenticate with the GitHub API. "
+            "Use this if you have problems with the rate limit. "
+            "Alternatively, you can set the environment variable GITHUB_ACCESS_TOKEN.",
+            envvar="GITHUB_ACCESS_TOKEN",
+        ),
+    ] = None,
+):
+    """
+    Pull all BO4E-JSON-schemas of a specific version.
+    Beside the json-files a .version file will be created in utf-8 format at root of the output directory.
+    This file is needed for other commands.
+    """
+    pass