langchain/templates/xml-agent/README.md
Leonid Ganeline 163ef35dd1
docs: templates updated titles (#25646)
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# XML - agent
This package creates an agent that uses `XML` syntax to communicate
its decisions of what actions to take.
It uses `Anthropic's Claude` models for writing XML syntax and
optionally looks up things on the internet using `DuckDuckGo`.
## Environment Setup
Two environment variables need to be set:
- `ANTHROPIC_API_KEY`: Required for using Anthropic
## 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 xml-agent
```
If you want to add this to an existing project, you can just run:
```shell
langchain app add xml-agent
```
And add the following code to your `server.py` file:
```python
from xml_agent import agent_executor as xml_agent_chain
add_routes(app, xml_agent_chain, path="/xml-agent")
```
(Optional) Let's now configure LangSmith.
LangSmith will help us trace, monitor and debug LangChain applications.
You can sign up for LangSmith [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/xml-agent/playground](http://127.0.0.1:8000/xml-agent/playground)
We can access the template from code with:
```python
from langserve.client import RemoteRunnable
runnable = RemoteRunnable("http://localhost:8000/xml-agent")
```