agents

Claude Skills are folder-based modules that extend Claude with scripts, instructions, and resources. Here's how they work and differ from MCP.

Pydantic AI explained: the type-safe Python framework for production LLM apps. Features, code examples, and how it compares to LangChain.

Function calling and tool use are the same concept under different names. Learn how LLMs invoke external tools, with examples from OpenAI, Anthropic, and Google.