LangChain Tutorial

Practical guides of LangChain.

Chapters

• T00: LLM
• T01: Prompt
• T02: Memory
• ...

Run Locally

git clone https://github.com/xleven/langchain-tutorial.git

cd langchain-tutorial
python3 -m venv .venv && source .venv/bin/activate
pip install -U "langchain-cli[serve]"
for dir in packages/t*; do pip install -e "$dir"; done

# set OpenAI API key
export OPENAI_API_KEY=<your-api-key>

# serve all chapters
langchain serve

# or serve specific chapter
cd packages/t00-llm && langchain serve

Now go to http://localhost:8000/docs or http://localhost:8000/redoc to see all the available API. Those ended with playground can be used to play with the API.