# summarize-anthropic This template uses Anthropic's `claude-3-sonnet-20240229` to summarize long documents. It leverages a large context window of 100k tokens, allowing for summarization of documents over 100 pages. You can see the summarization prompt in `chain.py`. ## Environment Setup Set the `ANTHROPIC_API_KEY` environment variable to access the Anthropic models. ## 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 summarize-anthropic ``` If you want to add this to an existing project, you can just run: ```shell langchain app add summarize-anthropic ``` And add the following code to your `server.py` file: ```python from summarize_anthropic import chain as summarize_anthropic_chain add_routes(app, summarize_anthropic_chain, path="/summarize-anthropic") ``` (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= export LANGCHAIN_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/summarize-anthropic/playground](http://127.0.0.1:8000/summarize-anthropic/playground) We can access the template from code with: ```python from langserve.client import RemoteRunnable runnable = RemoteRunnable("http://localhost:8000/summarize-anthropic") ```