Fix BadRequestError

✅ Solution

BadRequestError in Langchain often stems from improperly formatted requests sent to external services like OpenAI or Anthropic, typically due to incorrect serialization of data structures in prompts or tool outputs. To fix this, carefully review the Langchain agent's prompt formatting, tool input/output schemas, and how data is being serialized, ensuring they adhere to the API's expected format, and utilize debugging tools to inspect the exact request being sent. Validate that all required fields are provided, types match the schema and optional parameters are handled correctly.