langchain

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Files

Mason Daugherty df24c21c14 fix(langchain): make write_todos calls tool-only to stop duplicated plan text

Add a boundary rule to the `TodoListMiddleware` default prompt and tool
description: when calling `write_todos`, the assistant message must be
tool-only. User-facing plan text, status updates, approval questions, and
final answers should not appear in the same message as the call — they are
sent once, after the tool result returns. This stops streaming consumers
from showing the same plan/question twice (before and after the call) while
preserving #37643's contract that the final answer lands after the call.

Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>

2026-06-13 06:40:59 +00:00

agents

fix(langchain): make write_todos calls tool-only to stop duplicated plan text

2026-06-13 06:40:59 +00:00

chat_models

fix(langchain): tighten structured output model fallbacks (#38042 )

2026-06-10 21:18:14 -04:00

embeddings

refactor(langchain): rename _SUPPORTED_PROVIDERS -> _BUILTIN_PROVIDERS (#35100 )

2026-02-09 15:26:01 -05:00

tools

chore: move ToolNode improvements back to langgraph (#33634 )