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feat(docs): clarify ToolMessage contentfield usage

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Mason Daugherty
2025-08-08 13:02:59 -04:00
parent b7968c2b7d
commit 7f989d3c3b
1 changed files with 7 additions and 1 deletions
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8
libs/core/langchain_core/v1/messages.py
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@@ -797,7 +797,13 @@ class ToolMessage(ToolOutputMixin):
"""
content: list[types.ContentBlock]
"""Message content as a list of content blocks."""
"""Message content as a list of content blocks.
The tool's output should be included in the content, mapped to the appropriate
content block type (e.g., text, image, etc.). For instance, if the tool call returns
a string, it should be wrapped in a ``TextContentBlock``.
"""
type: Literal["tool"] = "tool"
"""The type of the message. Must be a string that is unique to the message type.