Abstract: A large language model (LLM) service for controlling LLM agents via an LLM may include obtaining, via a user interface, instructions for a first LLM, that is configured for agent evaluation, to evaluate inputs and outputs of LLM agents. The LLM service may obtain an input to an LLM agent. The LLM service may monitor the input to the LLM agent to evaluate whether the input to the LLM agent is in accordance with the instructions. The LLM service may output, to the LLM agent, the input based on evaluation of the input. The LLM service may obtain, from the LLM agent, an output in response to the input and monitor the output of the LLM agent to evaluate whether the output from the LLM agent is in accordance with the instructions. The LLM service may output the output from the LLM agent based on evaluation of the output.