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

let client: Anthropic | null = null;

export function getClaudeClient(): Anthropic {
  if (!client) {
    const apiKey = process.env.ANTHROPIC_API_KEY;
    if (!apiKey) throw new Error('ANTHROPIC_API_KEY is not set');
    client = new Anthropic({ apiKey });
  }
  return client;
}

export const CLAUDE_MODEL = 'claude-sonnet-4-20250514';