Tool
langchain
langchain-ai/langchain
What it is
A Python framework for building agents and LLM applications from interchangeable components and integrations. The README points to related packages for planning agents (Deep Agents) and graph workflows (LangGraph).
Who it might suit
Python developers wanting a common interface across model providers, vector stores and tools.
What to check first
LangSmith and LangSmith Deployment are named in the README as separate products for evaluation, observability and hosted deployment. Check which parts of an agent setup would depend on them.
How it runs
Python library
Written