diff --git a/cli/src/zshell/subcommands/__pycache__/shell.cpython-314.pyc b/cli/src/zshell/subcommands/__pycache__/shell.cpython-314.pyc
index 7f6e764..a337671 100644
Binary files a/cli/src/zshell/subcommands/__pycache__/shell.cpython-314.pyc and b/cli/src/zshell/subcommands/__pycache__/shell.cpython-314.pyc differ
diff --git a/cli/src/zshell/subcommands/shell.py b/cli/src/zshell/subcommands/shell.py
index ae73d0b..d66ea57 100644
--- a/cli/src/zshell/subcommands/shell.py
+++ b/cli/src/zshell/subcommands/shell.py
@@ -1,5 +1,8 @@
 import subprocess
+import sys
 import time
+
+import click
 import typer
 
 args = ["qs", "-c", "zshell"]
@@ -9,40 +12,65 @@ app = typer.Typer()
 
 @app.command()
 def kill():
-    subprocess.run(args + ["kill"], check=False)
+    result = subprocess.run(args + ["kill"], capture_output=True)
+    if result.returncode != 0:
+        raise click.ClickException("No running instance to kill.")
+    sys.stderr.write(result.stderr.decode())
 
 
 @app.command()
 def start(no_daemon: bool = False):
-    subprocess.run(args + ["-n"] + ([] if no_daemon else ["-d"]), check=True)
+    check = subprocess.run(args + ["ipc"] + ["show"], capture_output=True)
+    if check.returncode == 0:
+        raise click.ClickException("An instance of this configuration is already running.")
+    result = subprocess.run(args + ["-n"] + ([] if no_daemon else ["-d"]), capture_output=True)
+    if result.returncode != 0:
+        raise click.ClickException(result.stderr.decode().strip())
+    sys.stderr.write(result.stderr.decode())
 
 
 @app.command()
 def restart(no_daemon: bool = False):
-    subprocess.run(args + ["kill"], check=False)
+    subprocess.run(args + ["kill"])
     for _ in range(50):
         result = subprocess.run(args + ["kill"], capture_output=True)
         if result.returncode == 255:
             break
         time.sleep(0.05)
-    subprocess.run(args + ["-n"] + ([] if no_daemon else ["-d"]), check=True)
+    result = subprocess.run(args + ["-n"] + ([] if no_daemon else ["-d"]), capture_output=True)
+    if result.returncode != 0:
+        raise click.ClickException(result.stderr.decode().strip())
+    sys.stderr.write(result.stderr.decode())
 
 
 @app.command()
 def show():
-    subprocess.run(args + ["ipc"] + ["show"], check=True)
+    result = subprocess.run(args + ["ipc"] + ["show"], capture_output=True)
+    if result.returncode != 0:
+        raise click.ClickException(result.stderr.decode().strip())
+    sys.stderr.write(result.stderr.decode())
 
 
 @app.command()
 def log():
-    subprocess.run(args + ["log"], check=True)
+    result = subprocess.run(args + ["log"], capture_output=True)
+    if result.returncode != 0:
+        raise click.ClickException(result.stderr.decode().strip())
+    sys.stdout.write(result.stdout.decode())
+    sys.stderr.write(result.stderr.decode())
 
 
 @app.command()
 def lock():
-    subprocess.run(args + ["ipc"] + ["call"] + ["lock"] + ["lock"], check=True)
+    result = subprocess.run(args + ["ipc"] + ["call"] + ["lock"] + ["lock"], capture_output=True)
+    if result.returncode != 0:
+        raise click.ClickException(result.stderr.decode().strip())
+    sys.stderr.write(result.stderr.decode())
 
 
 @app.command()
 def call(target: str, method: str, method_args: list[str] = typer.Argument(None)):
-    subprocess.run(args + ["ipc"] + ["call"] + [target] + [method] + (method_args or []), check=True)
+    result = subprocess.run(args + ["ipc"] + ["call"] + [target] + [method] + (method_args or []), capture_output=True)
+    if result.returncode != 0:
+        raise click.ClickException(result.stderr.decode().strip())
+    sys.stderr.write(result.stderr.decode())