Claude 原生协议

export API_ROOT_URL="https://gateway.example.com"
export API_MODEL="YOUR_MODEL_ID"
# API_KEY must already be set in the process environment.

const { API_ROOT_URL, API_KEY, API_MODEL } = process.env;
if (!API_ROOT_URL || !API_KEY || !API_MODEL) {
  throw new Error('Set API_ROOT_URL, API_KEY, and API_MODEL first.');
}

try {
  const response = await fetch(`${API_ROOT_URL.replace(/\/+$/, '')}/v1/messages`, {
    method: 'POST', redirect: 'error', signal: AbortSignal.timeout(60_000),
    headers: { 'Content-Type': 'application/json', 'x-api-key': API_KEY, 'anthropic-version': '2023-06-01' },
    body: JSON.stringify({
      model: API_MODEL, max_tokens: 256,
      system: 'Answer briefly in plain text.',
      messages: [{ role: 'user', content: 'Say hello in one short sentence.' }],
    }),
  });
  if (!response.ok) {
    console.error(`Request failed (HTTP ${response.status}). No automatic retry.`);
    process.exitCode = 1;
  } else {
    const result = await response.json();
    if (result.type !== 'message' || result.role !== 'assistant' || result.stop_reason !== 'end_turn'
      || !Array.isArray(result.content) || result.content.length === 0) {
      throw new Error('No complete text response.');
    }
    const text = result.content.map((block: { type?: string; text?: string }) => {
      if (!block || block.type !== 'text' || typeof block.text !== 'string') {
        throw new Error('Unsupported content block.');
      }
      return block.text;
    }).join('');
    if (!text.trim()) throw new Error('Empty text response.');
    console.log(text);
  }
} catch {
  console.error('Claude request failed or did not produce complete plain text. No automatic retry.');
  process.exitCode = 1;
}
export {};