fix: upgrade litellm to >=1.81.0 to fix Claude Code tool call compatibility#86
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fix: upgrade litellm to >=1.81.0 to fix Claude Code tool call compatibility#86
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The code previously only converted tool_calls to tool_use blocks for Claude models (starting with 'claude-'). Other models would have their tool calls converted to plain text, causing Claude Code to not recognize them as actual tool calls. This fix ensures all models properly return tool_use blocks when they have tool_calls in their response.
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Summary
Problem
Claude Code tool calls were failing with error "each tool_use must have a single result. Found multiple tool_result blocks". This is a known incompatibility issue between older LiteLLM versions and Claude Code's tool result format.
Solution
LiteLLM v1.81.0+ includes the fix for this issue (PR #17632). Upgrading resolves the tool call failures.
Reference