diff --git a/spcd/__init__.py b/spcd/__init__.py
index c2bf4b0..ad58e1d 100644
--- a/spcd/__init__.py
+++ b/spcd/__init__.py
@@ -10,7 +10,7 @@ from rwx import fs
 from rwx.log import stream as log
 from rwx.ps import run
 
-from spcd import cmd
+from spcd import act, cmd
 from spcd.ci import project, projects
 from spcd.shell import env
 from spcd.util import browse, cat, split, step
@@ -131,12 +131,17 @@ def main(main_file: Path) -> None:
     path, *arguments = sys.argv
     name = Path(path).name
     if name == "__main__.py":
-        list_environment_variables()
-        clone_project_branch()
-        set_ssh()
-        install_actions(main_file)
-        install_commands(main_file)
-        install_python_packages()
+        if arguments:
+            name, *arguments = arguments
+            f = getattr(act, name)
+            f(*arguments)
+        else:
+            list_environment_variables()
+            clone_project_branch()
+            set_ssh()
+            install_actions(main_file)
+            install_commands(main_file)
+            install_python_packages()
     else:
         f = getattr(cmd, name.replace("-", "_"))
         f(*arguments)
diff --git a/spcd/act.py b/spcd/act.py
new file mode 100644
index 0000000..87e9fe1
--- /dev/null
+++ b/spcd/act.py
@@ -0,0 +1,38 @@
+"""Actions available for workflows."""
+
+import os
+from pathlib import Path
+
+from rwx import ps
+
+from spcd.ci import project, projects
+from spcd.shell import env
+
+
+def synchronize(
+    source: str | None = None, target: str | None = None
+) -> None:
+    """Synchronize output towards a target.
+
+    :param source: where to deploy from
+    :type source: str | None
+    :param target: where to deploy to
+    :type target: str | None
+    """
+    if not target:
+        user = "cd"
+        host = env.SPCD_PROJECT_PATH
+        root = (
+            Path(os.sep) / user / projects.group / project.name / project.branch
+        )
+        target = f"{user}@{host}:{root}"
+    if not source:
+        source = "out"
+    ps.run(
+        "rsync",
+        "--archive",
+        "--delete-before",
+        "--verbose",
+        f"{source}/",
+        f"{target}/",
+    )
diff --git a/spcd/actions/synchronize/action.yaml b/spcd/actions/synchronize/action.yaml
index 15aaf68..46526be 100644
--- a/spcd/actions/synchronize/action.yaml
+++ b/spcd/actions/synchronize/action.yaml
@@ -5,4 +5,4 @@ inputs:
 runs:
   using: composite
   steps:
-  - run: echo "synchronize"
+  - run: python3 -m "spcd" "synchronize"