Installation Basics
Getting started with LangChain is as simple as a pip or npm install. In Python, you use pip install langchain. However, to get the full power of the framework, you'll also need to install specific integration packages like langchain-openai or langchain-community. This modular approach keeps your environment lean and focused.
Environment Configuration
Configuration is primarily handled through environment variables. You'll need API keys for your model providers (e.g., OPENAI_API_KEY) and any tools you plan to use (e.g., SERPAPI_API_KEY for web search). We recommend using a .env file to manage these keys securely and avoid hardcoding sensitive information into your scripts.
Conclusion
A clean and well-configured environment is the foundation of successful development. With LangChain installed, you are ready to begin building your first autonomous agent.