diff --git a/oxrlib/__main__.py b/oxrlib/__main__.py
new file mode 100644
index 0000000000000000000000000000000000000000..b3ef26c72ad7eed52d3d521f6f2f65a9fc7bc4c9
--- /dev/null
+++ b/oxrlib/__main__.py
@@ -0,0 +1,22 @@
+import decimal
+import importlib
+import sys
+
+import oxrlib.config
+
+def decimal_context(base=decimal.BasicContext):
+    context = base.copy()
+    context.rounding = decimal.ROUND_HALF_EVEN
+    context.traps[decimal.Inexact] = False
+    context.traps[decimal.Rounded] = False
+    return context
+
+def main(arglist=None, stdout=sys.stdout, stderr=sys.stderr):
+    config = oxrlib.config.Configuration(arglist)
+    subcmd_module = importlib.import_module('.commands.' + config.args.command, 'oxrlib')
+    with decimal.localcontext(decimal_context()):
+        subcmd_module.run(config, stdout, stderr)
+    return 0
+
+if __name__ == '__main__':
+    exit(main())