Claude TypeScript SDK

クイックスタート

npm install @anthropic-ai/sdk
export ANTHROPIC_API_KEY='your-key'

import Anthropic from '@anthropic-ai/sdk';

const client = new Anthropic();
const message = await client.messages.create({
  model: 'claude-opus-4-5-20251101',
  max_tokens: 1024,
  messages: [{ role: 'user', content: 'Hello!' }],
});

コアパターン

基本的なメッセージ

const message = await client.messages.create({
  model: 'claude-opus-4-5-20251101',
  max_tokens: 1024,
  messages: [{ role: 'user', content: 'Your prompt' }],
});
console.log(message.conten

...