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fix(langchain): fix docs on LLMToolSelectorMiddleware #1415

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Nov 14, 2025
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fix(langchain): fix docs on LLMToolSelectorMiddleware #1415

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12 changes: 8 additions & 4 deletions src/oss/langchain/middleware/built-in.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -1124,11 +1124,11 @@ const agent = createAgent({
</ParamField>

<ParamField body="max_tools" type="number">
Maximum number of tools to select. Defaults to no limit.
Maximum number of tools to select. If the model selects more, only the first max_tools will be used. No limit if not specified.
</ParamField>

<ParamField body="always_include" type="list[string]">
List of tool names to always include in the selection
Tool names to always include regardless of selection. These do not count against the max_tools limit.
</ParamField>
:::

Expand All @@ -1137,12 +1137,16 @@ const agent = createAgent({
Model for tool selection. Can be a model identifier string (e.g., `'openai:gpt-4o-mini'`) or a `BaseChatModel` instance. Defaults to the agent's main model.
</ParamField>

<ParamField body="systemPrompt" type="string">
Instructions for the selection model. Uses built-in prompt if not specified.
</ParamField>

<ParamField body="maxTools" type="number">
Maximum number of tools to select. Defaults to no limit.
Maximum number of tools to select. If the model selects more, only the first maxTools will be used. No limit if not specified.
</ParamField>

<ParamField body="alwaysInclude" type="string[]">
Array of tool names to always include in the selection
Tool names to always include regardless of selection. These do not count against the maxTools limit.
</ParamField>
:::

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