Glossary

Agent

An LLM-powered system that can use tools, observe results, manage state, and continue working toward a goal.

Agent Loop

The repeated cycle of observing input, reasoning, taking action, observing results, and deciding whether to continue.

Tool

A function, API, service, or capability exposed to a model so it can act outside pure text generation.

MCP

Model Context Protocol, a standard for connecting AI systems to tools and resources.

A2A

Agent2Agent protocol, a standard for communication between agents.

RAG

Retrieval-Augmented Generation, a pattern that retrieves external knowledge before generating an answer.