fix: ensure complete tool call sequences and prevent duplication in summarization#100
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Yashwanth (yash025) wants to merge 2 commits into
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fix: ensure complete tool call sequences and prevent duplication in summarization#100Yashwanth (yash025) wants to merge 2 commits into
Yashwanth (yash025) wants to merge 2 commits into
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July 17, 2025 09:14
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Feb 11, 2026
…ssages When the token cutoff in `_preprocess_messages` lands on a ToolMessage mid-sequence (rather than on the AIMessage itself), the existing handler at lines 204-207 never fires because it only checks whether the *last* message in `messages_to_summarize` is an AIMessage. This leaves subsequent tool results excluded from the summarization range, producing orphaned `tool_use` blocks that cause provider-level validation errors (Bedrock `ValidationException`, OpenAI `BadRequestError`). The fix replaces the single-message check with a loop over ALL AIMessages in the summarization range, appending any missing corresponding ToolMessages from the pre-built lookup dictionary. Fixes langchain-ai#126 Fixes langchain-ai#112 Supersedes langchain-ai#127 Supersedes langchain-ai#100
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I've submitted #141 which addresses this more comprehensively — it checks all |
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fix for issue: #98