langchain/templates/retrieval-agent/README.md
Erick Friis 51c8ef6af4
templates: fix azure params in retrieval agent (#16257)
- FIX templates/retrieval-agent/retireval-agent/chain.py to use the new
Syntax for Azure env params
- cr

---------

Co-authored-by: braun-viathan <p.braun@viathan.de>
Co-authored-by: Braun-viathan <121631422+braun-viathan@users.noreply.github.com>
2024-01-23 14:58:06 -07:00

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# retrieval-agent
This package uses Azure OpenAI to do retrieval using an agent architecture.
By default, this does retrieval over Arxiv.
## Environment Setup
Since we are using Azure OpenAI, we will need to set the following environment variables:
```shell
export AZURE_OPENAI_ENDPOINT=...
export AZURE_OPENAI_API_VERSION=...
export AZURE_OPENAI_API_KEY=...
```
## Usage
To use this package, you should first have the LangChain CLI installed:
```shell
pip install -U langchain-cli
```
To create a new LangChain project and install this as the only package, you can do:
```shell
langchain app new my-app --package retrieval-agent
```
If you want to add this to an existing project, you can just run:
```shell
langchain app add retrieval-agent
```
And add the following code to your `server.py` file:
```python
from retrieval_agent import chain as retrieval_agent_chain
add_routes(app, retrieval_agent_chain, path="/retrieval-agent")
```
(Optional) Let's now configure LangSmith.
LangSmith will help us trace, monitor and debug LangChain applications.
LangSmith is currently in private beta, you can sign up [here](https://smith.langchain.com/).
If you don't have access, you can skip this section
```shell
export LANGCHAIN_TRACING_V2=true
export LANGCHAIN_API_KEY=<your-api-key>
export LANGCHAIN_PROJECT=<your-project> # if not specified, defaults to "default"
```
If you are inside this directory, then you can spin up a LangServe instance directly by:
```shell
langchain serve
```
This will start the FastAPI app with a server is running locally at
[http://localhost:8000](http://localhost:8000)
We can see all templates at [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs)
We can access the playground at [http://127.0.0.1:8000/retrieval-agent/playground](http://127.0.0.1:8000/retrieval-agent/playground)
We can access the template from code with:
```python
from langserve.client import RemoteRunnable
runnable = RemoteRunnable("http://localhost:8000/retrieval-agent")
```