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ReAct (Reason+Act) パターンを TypeScript だけで実装する

https://zenn.dev/kt3k/articles/74785af8436b1e

April 2, 2026 at 03:14 PM JST•The archive page, viewer, and downloads use this saved version.

April 2, 2026 at 03:14 PM JST·zenn.dev

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ReAct (Reason+Act) パターンを TypeScript だけで実装する

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Original URLhttps://zenn.dev/kt3k/articles/74785af8436b1e

StartedApril 2, 2026 at 03:14 PM JST

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About this pageAI generated

This page explains how to implement the ReAct (Reason+Act) pattern from scratch using only TypeScript, without any frameworks. ReAct is an AI agent pattern where LLMs alternate between 'reasoning' and 'acting' steps to solve problems progressively. The article demonstrates this through a practical example of an npm package selection agent using two tools: search and get_info. It illustrates how the Reason→Action→Observation loop works by showing actual code implementation.

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