ServerToolCallChunk Class — langchain Architecture
Architecture documentation for the ServerToolCallChunk class in content.py from the langchain codebase.
Entity Profile
Dependency Diagram
graph TD 728c0c3c_9660_ccca_89a4_33d3c3babaf7["ServerToolCallChunk"] c7f11daf_e104_efbe_7225_f1d6da8e8630["content.py"] 728c0c3c_9660_ccca_89a4_33d3c3babaf7 -->|defined in| c7f11daf_e104_efbe_7225_f1d6da8e8630
Relationship Graph
Source Code
libs/core/langchain_core/messages/content.py lines 397–422
class ServerToolCallChunk(TypedDict):
"""A chunk of a server-side tool call (yielded when streaming)."""
type: Literal["server_tool_call_chunk"]
"""Used for discrimination."""
name: NotRequired[str]
"""The name of the tool to be called."""
args: NotRequired[str]
"""JSON substring of the arguments to the tool call."""
id: NotRequired[str]
"""Unique identifier for this server tool call chunk.
Either:
- Generated by the provider
- Generated by LangChain upon creation (`UUID4` prefixed with `'lc_'`))
"""
index: NotRequired[int | str]
"""Index of block in aggregate response. Used during streaming."""
extras: NotRequired[dict[str, Any]]
"""Provider-specific metadata."""Defined In
Source
Frequently Asked Questions
What is the ServerToolCallChunk class?
ServerToolCallChunk is a class in the langchain codebase, defined in libs/core/langchain_core/messages/content.py.
Where is ServerToolCallChunk defined?
ServerToolCallChunk is defined in libs/core/langchain_core/messages/content.py at line 397.
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