🤖MediumLLM Agents & Tool UsePREMIUM

Function Calling & Tool Use

Understand how LLMs learn to call functions, parse structured output, and handle multi-step tool use chains.

What you'll master

Function/tool calling training data

Structured output generation (JSON mode)

Multi-step tool use with observation loops

Error handling and retries

Security considerations for tool execution

Constrained decoding (FSM/Trie)

Tool selection and routing (RAG for tools)

Parallel tool execution

ReAct pattern basics

Medium30 min readIncludes code examples, architecture diagrams, and expert-level follow-up questions.

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