# Wirtual Plugins Llama Index
Agent Framework plugin for using Llama Index. Currently supports [Query Engine](https://docs.llamaindex.ai/en/stable/module_guides/deploying/query_engine/) and [Chat Engine](https://docs.llamaindex.ai/en/stable/module_guides/deploying/chat_engines/).
## Install
```bash
pip install wirtual-plugins-llama-index
```
## Query Engine
Query Engine is primarily used for RAG. See [example voice agent](https://github.com/wirtualdev/wirtual-agents/blob/main/examples/voice-pipeline-agent/llamaindex-rag/query_engine.py)
## Chat Engine
Chat Engine can be used as an LLM within the framework.
```python
# load the existing index
storage_context = StorageContext.from_defaults(persist_dir=<mydir>)
index = load_index_from_storage(storage_context)
async def entrypoint(ctx: JobContext):
...
chat_engine = index.as_chat_engine(chat_mode=ChatMode.CONTEXT)
assistant = VoicePipelineAgent(
vad=silero.VAD.load(),
stt=deepgram.STT(),
llm=llama_index.LLM(chat_engine=chat_engine),
tts=openai.TTS(),
chat_ctx=initial_ctx,
)
```
full example [here](https://github.com/wirtualdev/wirtual-agents/blob/main/examples/voice-pipeline-agent/llamaindex-rag/chat_engine.py)
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"description": "# Wirtual Plugins Llama Index\n\nAgent Framework plugin for using Llama Index. Currently supports [Query Engine](https://docs.llamaindex.ai/en/stable/module_guides/deploying/query_engine/) and [Chat Engine](https://docs.llamaindex.ai/en/stable/module_guides/deploying/chat_engines/).\n\n## Install\n\n```bash\npip install wirtual-plugins-llama-index\n```\n\n## Query Engine\n\nQuery Engine is primarily used for RAG. See [example voice agent](https://github.com/wirtualdev/wirtual-agents/blob/main/examples/voice-pipeline-agent/llamaindex-rag/query_engine.py)\n\n## Chat Engine\n\nChat Engine can be used as an LLM within the framework.\n\n```python\n# load the existing index\nstorage_context = StorageContext.from_defaults(persist_dir=<mydir>)\nindex = load_index_from_storage(storage_context)\n\nasync def entrypoint(ctx: JobContext):\n ...\n chat_engine = index.as_chat_engine(chat_mode=ChatMode.CONTEXT)\n assistant = VoicePipelineAgent(\n vad=silero.VAD.load(),\n stt=deepgram.STT(),\n llm=llama_index.LLM(chat_engine=chat_engine),\n tts=openai.TTS(),\n chat_ctx=initial_ctx,\n )\n```\n\nfull example [here](https://github.com/wirtualdev/wirtual-agents/blob/main/examples/voice-pipeline-agent/llamaindex-rag/chat_engine.py)\n",
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