A Generative AI Engineer is experimenting with using parameters to configure an agent in Mosaic...

In the Mosaic AI Agent Framework and underlying LangChain-based configurations, the " input_vars " or " input_variables " must be correctly mapped and referenced within the template. If the configuration dictionary identifies user_input as the variable but the logic executing the chain does not correctly " inject " the runtime value into the {user_input} placeholder, the LLM will receive a literal string (or an empty value) rather than the user ' s actual question. This results in the model failing to provide relevant information because it essentially doesn ' t know what the user asked. Engineering standards require ensuring that the key used in the input_vars list matches the key in the JSON payload sent to the model serving endpoint. If there is a mismatch or a failure to parse, the prompt remains static, leading to generic or irrelevant responses.