Glossary

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The site search is in the navigation bar. Here are the terms themselves.

Term	Meaning in the course
Agent	A system that observes and chooses an action to move toward a goal
Fixed workflow	An order of steps set in advance
Tool	An action the code can perform after a check
Tool call	A name and arguments that the model, or the policy, requests
Schema	Which fields are allowed and which types
Permission	Whether the action is allowed, beyond a valid format
Observation	What came back from the tool or the environment
Context	What is sent to the model in this request
State	What the application remembers in the middle of the task
Stored memory	A note saved for next time, and only if it is loaded
RAG	Retrieving passages at question time, then writing an answer
Agentic RAG	The agent decides whether to retrieve, retrieve again, or answer
MCP	A protocol for discovering tools and calling them
Budget	A limit on steps or on calls
Guardrail	A check in code that blocks an action, not just a sentence in the instructions
Simulation	A policy written in advance. No model runs behind it