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docs: document LiteLLM tools=None bug workaround
Added documentation about the LiteLLM bug that causes TypeError when
Letta sends tools=null during summarization, and the fix using pinned
version v1.80.9.dev6.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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CLAUDE.md
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CLAUDE.md
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// Then update if exists, create if not
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```
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### LiteLLM tools=None Bug (Pinned Version)
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LiteLLM's `main-latest` image has a bug where `filter_web_search_deployments` throws a `TypeError` when Letta sends `tools=null` during summarization requests.
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**Symptom:** Agent crashes during memory compaction/summarization with:
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```
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TypeError: argument of type 'NoneType' is not iterable
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```
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**Fix:** Pin to version `v1.80.9.dev6` which includes the fix:
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```yaml
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# docker-compose.yml
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litellm:
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# Using specific version that includes fix for tools=None bug
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# https://github.com/BerriAI/litellm/commit/7c2e2111c0cc3372ca0ce911d0b6d45c22794d7f
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image: ghcr.io/berriai/litellm:litellm_embedding_header_forwarding-v1.80.9.dev6
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```
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**When to update:** Once LiteLLM releases a stable version with this fix merged, update to that version.
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---
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## Tiny Wins Tools