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135 agents · capability hub

AI agents with tool use2026

外部ツール、API、関数を呼び出して実際にアクションを実行するエージェント。エージェントをチャットボットと区別する基盤となる機能です。

Want the technical definition? Read the tool use glossary entry →

The 135 agents that ship tool use

Frequently asked

What is tool use in AI agents?+

LLMが構造化された関数呼び出しを通じて外部システム(API、データベース、ファイルシステム、ブラウザ)を呼び出す能力。

Which AI agents support tool use?+

135 agents in our index ship tool use. The list above is sorted by community interest; GitHub Copilot, Windsurf, OpenAI Operator are the most-researched in 2026.

How do I evaluate tool use in an AI agent?+

Look for: (1) reliability across edge cases, not just demo videos; (2) how the agent recovers when tool use fails mid-task; (3) whether tool use is the default mode or an opt-in feature. Production-ready agents publish tool use benchmarks; demos and screenshots aren't enough.

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AI agents with tool use in 2026: 135 compared · AI Agent Rank