Webhookウェイク

{ "mode": "webhook", "url": "https://api2.cursor.sh/automations/webhook/<routine-id>", "token": "<token>" }

{ "mode": "webhook", "url": "https://api.anthropic.com/v1/claude_code/routines/<trigger-id>/fire", "token": "<token>" }

import { createHmac, timingSafeEqual } from 'node:crypto';

const TOLERANCE_SECONDS = 300;

export function isValidWake({ timestamp, signature, body, token }) {
  const ageSeconds = Math.abs(Date.now() / 1000 - Number(timestamp));
  if (!(ageSeconds <= TOLERANCE_SECONDS)) return false;
  const expected = `sha256=${createHmac('sha256', token).update(`${timestamp}.${body}`).digest('hex')}`;
  const received = Buffer.from(signature);
  const wanted = Buffer.from(expected);
  return received.length === wanted.length && timingSafeEqual(received, wanted);
}