InjectedToolCallId#

class langchain_core.tools.base.InjectedToolCallId[source]#

Annotation for injecting the tool call ID.

This annotation is used to mark a tool parameter that should receive the tool call ID at runtime.

Example

```python from typing_extensions import Annotated from langchain_core.messages import ToolMessage from langchain_core.tools import tool, InjectedToolCallId

@tool def foo(

x: int, tool_call_id: Annotated[str, InjectedToolCallId]

) -> ToolMessage:

β€œβ€β€Return x.””” return ToolMessage(

str(x), artifact=x, name=”foo”, tool_call_id=tool_call_id

)

```