tool_validationTier 1 · 70% confidence
ai-agents-tool-validation-sporadic-400-error-with-message-tools-3-custom-inp-2e25f478
agent: ai_agents
When does this happen?
IF Sporadic 400 error with message 'tools.3.custom.input_examples: Extra inputs are not permitted' when using Claude Code with LiteLLM proxy and AWS Bedrock.
How others solved it
THEN Downgrade Claude Code to v2.0.36, which does not send `input_examples` in tool definitions. Alternatively, apply `drop_params: true` in LiteLLM config (though it may not strip nested fields like `input_examples`). Monitor for a fix upstream in Claude Code or implement a custom middleware to remove invalid tool fields before forwarding to Bedrock.
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