# Petals This page covers how to use the Petals ecosystem within LangChain. It is broken into two parts: installation and setup, and then references to specific Petals wrappers. ## Installation and Setup - Install with `pip install petals` - Get a Hugging Face api key and set it as an environment variable (`HUGGINGFACE_API_KEY`) ## Wrappers ### LLM There exists an Petals LLM wrapper, which you can access with ```python from langchain.llms import Petals ```