How Notion Workers run untrusted code at scale with Vercel Sandbox (opens in new tab)

**Published:** March 12, 2026 | **Authors:** Karson Seeley, Harpreet Arora | **Category:** Customer stories --- Notion Workers let you write and deploy code to give Custom Agents new powers: sync external data, trigger automations, call any API. With Workers, developers can build agents that sync CRM data on a schedule, open issues when error rates spike, and turn Slack threads into formatted content. Under the hood, every Worker runs on Vercel Sandbox. ## **The problem: safely running co...