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langchain-ai / langchain Public

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Back to pull request #34055

feat(langchain): support `SystemMessage` in `create_agent`'s `system_prompt` #49473

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feat(langchain): support `SystemMessage` in `create_agent`'s `system_prompt`

feat(langchain): support `SystemMessage` in `create_agent`'s `system_prompt` #49473

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test-pydantic (libs/langchain_v1, 2.8.0, 3.12) / Pydantic ~=2.8.0

test-pydantic (libs/langchain_v1, 2.8.0, 3.12) / Pydantic ~=2.8.0

succeeded Nov 24, 2025 in 29s

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