# OpenAI Functions Agent This template creates an agent that uses OpenAI function calling to communicate its decisions of what actions to take. This example creates an agent that can optionally look up things on the internet using Tavily's search engine. ## LLM This template will use `OpenAI` by default. Be sure that `OPENAI_API_KEY` is set in your environment. ## Tools This template will use `Tavily` by default. Be sure that `TAVILY_API_KEY` is set in your environment.