diff --git a/src/zona/cli.py b/src/zona/cli.py
index bbfc612..3d583f0 100644
--- a/src/zona/cli.py
+++ b/src/zona/cli.py
@@ -8,53 +8,6 @@ from zona.log import setup_logging
 
 app = typer.Typer()
 
-setup_logging("DEBUG")
-
-
-@app.command()
-def build(
-    root: Annotated[
-        Path | None,
-        typer.Argument(
-            help="Directory containing config.yml",
-        ),
-    ] = None,
-    output: Annotated[
-        Path | None,
-        typer.Argument(help="Location to write built website"),
-    ] = None,
-):
-    """
-    Build the website.
-
-    Optionally specify the ROOT and OUTPUT directories.
-    """
-    builder = ZonaBuilder(root, output)
-    builder.build()
-
-
-@app.command()
-def serve(
-    root: Annotated[
-        Path | None,
-        typer.Argument(
-            help="Directory containing config.yml",
-        ),
-    ] = None,
-    output: Annotated[
-        Path | None,
-        typer.Argument(help="Location to write built website"),
-    ] = None,
-):
-    """
-    Build the website and start a live preview server.
-
-    The website is rebuilt when the source is modified.
-
-    Optionally specify the ROOT and OUTPUT directories.
-    """
-    server.serve(root, output)
-
 
 @app.command()
 def init(
@@ -76,5 +29,73 @@ def init(
     initialize_site(root)
 
 
+@app.command()
+def build(
+    root: Annotated[
+        Path | None,
+        typer.Argument(
+            help="Directory containing config.yml",
+        ),
+    ] = None,
+    output: Annotated[
+        Path | None,
+        typer.Option(
+            "--output", "-o", help="Location to write built website"
+        ),
+    ] = None,
+):
+    """
+    Build the website.
+
+    Optionally specify the ROOT and OUTPUT directories.
+    """
+    builder = ZonaBuilder(root, output)
+    builder.build()
+
+
+@app.command()
+def serve(
+    root: Annotated[
+        Path | None,
+        typer.Argument(
+            help="Directory containing config.yml",
+        ),
+    ] = None,
+    output: Annotated[
+        Path | None,
+        typer.Option(
+            "--output", "-o", help="Location to write built website"
+        ),
+    ] = None,
+):
+    """
+    Build the website and start a live preview server.
+
+    The website is rebuilt when the source is modified.
+
+    Optionally specify the ROOT and OUTPUT directories.
+    """
+    server.serve(root, output)
+
+
+@app.callback()
+def main_entry(
+    verbosity: Annotated[
+        str,
+        typer.Option(
+            "--verbosity",
+            "-v",
+            help="Logging verbosity. One of INFO, DEBUG, WARN, ERROR.",
+        ),
+    ] = "info",
+) -> None:
+    """
+    Opinionated static site generator.
+
+    Supply --help after any subcommand for more details.
+    """
+    setup_logging(verbosity)
+
+
 def main():
     app()
diff --git a/src/zona/log.py b/src/zona/log.py
index f3a3f25..129a36c 100644
--- a/src/zona/log.py
+++ b/src/zona/log.py
@@ -6,7 +6,7 @@ _LOGGER_NAME = "zona"
 
 
 def setup_logging(
-    level: Literal["INFO", "DEBUG", "WARN", "ERROR"] = "INFO",
+    level: str = "INFO",
 ):
     logger = logging.getLogger(_LOGGER_NAME)
     logger.setLevel(level.upper())