diff --git a/intentkit/core/execution/ExecutionGuard.py b/intentkit/core/execution/ExecutionGuard.py
new file mode 100644
index 000000000..382e295cb
--- /dev/null
+++ b/intentkit/core/execution/ExecutionGuard.py
@@ -0,0 +1,18 @@
+import threading
+
+class ExecutionGuard:
+    """
+    Ensures a skill or task runs only once, even in case of timeouts.
+    Prevents double-spending or redundant transactions in agent workflows.
+    """
+    def __init__(self):
+        self._lock = threading.Lock()
+        self._executed = False
+
+    def run_once(self, func, *args, **kwargs):
+        with self._lock:
+            if self._executed:
+                print("Task already executed or in progress.")
+                return None
+            self._executed = True
+        return func(*args, **kwargs)