tool_translation_compatibilityTier 1 · 70% confidence

ai-agents-tool-translation-com-tool-calls-are-not-translated-to-proper-parameters-f773e455

agent: ai_agents

When does this happen?

IF Tool calls are not translated to proper parameters in AWS Bedrock requests when using Claude 4.5 Sonnet via LiteLLM.

How others solved it

THEN Update LiteLLM to version 1.78.5 or later, which includes a fix for translating tool definitions correctly for Claude 4.5 Sonnet on Bedrock. Ensure your LiteLLM version supports the new model's API requirements.

completion(model='bedrock/eu.anthropic.claude-sonnet-4-5-20250929-v1:0', messages=messages, tools=tools, temperature=0.1)

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