diff --git a/docs/docs/concepts/low_level.md b/docs/docs/concepts/low_level.md
index b3df3c882..1d059568b 100644
--- a/docs/docs/concepts/low_level.md
+++ b/docs/docs/concepts/low_level.md
@@ -344,9 +344,9 @@ def my_node(state: State) -> Command[Literal["my_other_node"]]:
| Property | Description |
| --- | --- |
| `graph` | Graph to send the command to. Supported values:
- `None`: the current graph (default)
- `Command.PARENT`: closest parent graph |
-| `update` | State update to apply to the graph's state at the current superstep |
-| `resume` | Value to resume execution with. Will be used when `interrupt()` is called |
-| `goto` | Can be one of the following:
- name of the node to navigate to next (any node that belongs to the specified `graph`)
- list of node names to navigate to next
- `Send` object
- sequence of `Send` objects
If `goto` is not specified and there are no other tasks left in the graph, the graph will halt after executing the current superstep. |
+| `update` | Update to apply to the graph's state. |
+| `resume` | Value to resume execution with. To be used together with [`interrupt()`][langgraph.types.interrupt]. |
+| `goto` | Can be one of the following:
- name of the node to navigate to next (any node that belongs to the specified `graph`)
- sequence of node names to navigate to next
- `Send` object (to execute a node with the input provided)
- sequence of `Send` objects
If `goto` is not specified and there are no other tasks left in the graph, the graph will halt after executing the current superstep. |
```python
from langgraph.graph import StateGraph, START
@@ -373,13 +373,15 @@ graph = builder.compile()
With `Command` you can also achieve dynamic control flow behavior (identical to [conditional edges](#conditional-edges)):
```python
-def my_node(state: State) -> Command[Literal["my_other_node", "__end__"]]:
+def my_node(state: State) -> Command[Literal["my_other_node"]]:
if state["foo"] == "bar":
return Command(update={"foo": "baz"}, goto="my_other_node")
- else:
- return Command(goto="__end__")
```
+!!! important
+
+ When returning `Command` in your node functions, you must add return type annotations with the list of node names the node is routing to, e.g. `Command[Literal["node_b", "node_c"]]`. This is necessary for the graph compilation and rendering, and tells LangGraph that `node_a` can navigate to `node_b` and `node_c`.
+
Check out this [how-to guide](../how-tos/command.ipynb) for an end-to-end example of how to use `Command`.
## Persistence
diff --git a/docs/docs/reference/types.md b/docs/docs/reference/types.md
index 98b1ef137..b42b11f35 100644
--- a/docs/docs/reference/types.md
+++ b/docs/docs/reference/types.md
@@ -14,3 +14,4 @@
- StateSnapshot
- Send
- Command
+ - interrupt
diff --git a/libs/langgraph/langgraph/types.py b/libs/langgraph/langgraph/types.py
index 1780c0a7f..d4fb5ab55 100644
--- a/libs/langgraph/langgraph/types.py
+++ b/libs/langgraph/langgraph/types.py
@@ -249,13 +249,15 @@ class Command(Generic[N]):
Args:
graph: graph to send the command to. Supported values are:
+
- None: the current graph (default)
- GraphCommand.PARENT: closest parent graph
update: update to apply to the graph's state.
- resume: value to resume execution with. To be used together with `interrupt()`.
+ resume: value to resume execution with. To be used together with [`interrupt()`][langgraph.types.interrupt].
goto: can be one of the following:
+
- name of the node to navigate to next (any node that belongs to the specified `graph`)
- - list of node names to navigate to next
+ - sequence of node names to navigate to next
- `Send` object (to execute a node with the input provided)
- sequence of `Send` objects
"""