Tool Calling
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LangChain with Ollama: Local Setup, Tools, and RAG
This guide explains how LangChain connects to Ollama for local chat, streaming, tool calling, structured output, embeddings, and RAG.
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LangChain Agent Errors: Loops, Tools, Parsing
Why LangChain agents loop forever, skip tools, pass bad arguments or fail to parse output, and the configuration changes that fix each symptom.
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LangChain vs LangGraph: Agents, State and Control Flow
Compare LangChain vs LangGraph for agent loops, state, checkpoints and human approval, with guidance on when to use create_agent or a custom graph.