# Nebula

This page covers how to use [Nebula](https://symbl.ai/nebula), [Symbl.ai](https://symbl.ai/)'s LLM, ecosystem within LangChain.
It is broken into two parts: installation and setup, and then references to specific Nebula wrappers.

## Installation and Setup

- Get an Nebula API Key and set as environment variables (`SYMBLAI_NEBULA_SERVICE_URL`, `SYMBLAI_NEBULA_SERVICE_PATH`, `SYMBLAI_NEBULA_SERVICE_TOKEN`)
  - Sign up for a FREE Symbl.ai/Nebula Account: [https://nebula.symbl.ai/playground/](https://nebula.symbl.ai/playground/)
- Please see the [Nebula documentation](https://docs.symbl.ai/docs/nebula-llm-overview) for more details.
  - No time? Visit the [Nebula Quickstart Guide](https://docs.symbl.ai/docs/nebula-quickstart).

## Wrappers

### LLM

There exists an Nebula LLM wrapper, which you can access with 
```python
from langchain.llms import Nebula
```