AIエージェントは、LLMを使って自律的にタスクを実行するシステムです——単一のプロンプトに応答するだけでなく、計画を立て、ツールを使い、行動を起こして目標を達成します。これらは、より能力が高く自律的なAIアプリケーションへの進化を表しています。
AIエージェントとは
AI AGENT → an LLM-powered system that autonomously works toward a GOAL:
→ REASONS/plans → breaks a goal into steps
→ uses TOOLS → calls functions, APIs, searches, runs code, accesses data
→ takes ACTIONS and observes results → iterates (a loop of think → act → observe)
→ works toward the goal with some AUTONOMY (multi-step, not a single response)
→ beyond single Q&A → an LLM that can DO things over multiple steps
エージェントの仕組み
→ the LLM is the 'brain' → decides what to do next based on the goal and observations
→ TOOLS extend its abilities → web search, code execution, APIs, databases, file access
→ a LOOP → the agent plans, acts (uses a tool), observes the result, and continues until
the goal is met
→ patterns: ReAct (reason+act), tool-calling/function-calling, planning, memory
