Integration Webhooks

Rule

Integration webhooks (Slack, Telegram, WhatsApp, email, Google Docs, etc.) must enqueue work to SQL and return 200 immediately, then process the work in a separate fresh function execution kicked off by a self-fired HTTP POST. A recurring retry job sweeps anything that gets stuck. This pattern works on every serverless host (Netlify, Vercel, Cloudflare Workers, Fly, Render, Node) without relying on platform-specific background-execution features.

Do not run agent loops inside the webhook handler itself. Do not rely on fire-and-forget Promises after returning from a serverless handler — they get killed when the function freezes.

Why