LangChain Agent Starter Kit

It answers two questions that every project must resolve upfront:

1. Which framework should I use? — LangChain, LangGraph, or Deep Agents
2. What do I need to install? — packages, versions, and environment setup

Load this skill first. Once you've made these decisions, invoke the framework-specific skill for implementation details.

Step 1 — Pick Your Framework

The three frameworks are layered, not competing. Each builds on the one below: