diff --git a/minillmflow/__init__.py b/minillmflow/__init__.py
new file mode 100644
index 0000000..a76402d
--- /dev/null
+++ b/minillmflow/__init__.py
@@ -0,0 +1,117 @@
+import asyncio
+
+class BaseNode:
+    def __init__(self):
+        self.set_parameters({})  # immutable during processing; could be overwritten as node can be reused
+        self.successors = {}
+        
+    def set_parameters(self, parameters):
+        self.parameters = parameters.copy() if parameters else {}
+        
+    def add_successor(self, node, condition="default"):
+        self.successors[condition] = node
+        return node
+        
+    async def preprocess(self, shared_storage):
+        return None
+    
+    async def process_one(self, shared_storage, item):
+        return None
+    
+    async def process(self, shared_storage, preprocess_result):
+        return await self.process_one(shared_storage, preprocess_result)
+        
+    async def postprocess(self, shared_storage, preprocess_result, process_result):
+        return "default"
+        
+    async def run_one(self, shared_storage):
+        preprocess_result = await self.preprocess(shared_storage)
+        process_result = await self.process(shared_storage, preprocess_result)
+        condition = await self.postprocess(shared_storage, preprocess_result, process_result)
+        
+        if not self.successors:
+            return None
+        elif len(self.successors) == 1:
+            return next(iter(self.successors.values()))
+        return self.successors.get(condition)
+
+    def run(self, shared_storage=None):
+        return asyncio.run(self.run_async(shared_storage))
+
+    async def run_async(self, shared_storage=None):
+        shared_storage = shared_storage or {}
+        current_node = self
+        while current_node:
+            current_node = await current_node.run_one(shared_storage)
+        
+    def __rshift__(self, other):
+        return self.add_successor(other)
+    
+    def __gt__(self, other):
+        if isinstance(other, str):
+            return _ConditionalTransition(self, other)
+        elif isinstance(other, BaseNode):
+            return self.add_successor(other)
+        raise TypeError("Unsupported operand type")
+    
+    def __call__(self, condition):
+        return _ConditionalTransition(self, condition)
+
+class _ConditionalTransition:
+    def __init__(self, source_node, condition):
+        self.source_node = source_node
+        self.condition = condition
+    
+    def __gt__(self, target_node):
+        if not isinstance(target_node, BaseNode):
+            raise TypeError("Target must be a BaseNode")
+        return self.source_node.add_successor(target_node, self.condition)
+
+class BaseSuperNode(BaseNode):
+    def __init__(self, start_node=None):
+        super().__init__()
+        self.start_node = start_node
+            
+    async def process_one(self, shared_storage, item):
+        if self.start_node:
+            current_node = self.start_node
+            while current_node:
+                current_node.set_parameters(self.parameters)
+                current_node = await current_node.run_one(shared_storage or {})
+
+class BatchMixin:
+    async def process(self, shared_storage, items):
+        partial_results = []
+        for item in items:
+            r = await self.process_one(shared_storage, item)
+            partial_results.append(r)
+
+        return self.merge(shared_storage, partial_results)
+
+    def merge(self, shared_storage, partial_results):
+        return partial_results
+
+    async def preprocess(self, shared_storage):
+        return []
+    
+class BatchBaseNode(BatchMixin, BaseNode):
+    async def preprocess(self, shared_storage):
+        return []
+    
+    async def process_one(self, shared_storage, item):
+        return None
+
+class BatchSuperNode(BatchMixin, BaseSuperNode):
+    async def preprocess(self, shared_storage):
+        return []
+    
+    async def process_one(self, shared_storage, param_dict):
+        node_parameters = self.parameters.copy()
+        node_parameters.update(param_dict)
+
+        if self.start_node:
+            current_node = self.start_node
+            while current_node:
+                current_node.set_parameters(node_parameters)
+                current_node = await current_node.run_one(shared_storage or {})
+
diff --git a/minillmflow/__pycache__/__init__.cpython-39.pyc b/minillmflow/__pycache__/__init__.cpython-39.pyc
new file mode 100644
index 0000000..549c726
Binary files /dev/null and b/minillmflow/__pycache__/__init__.cpython-39.pyc differ