# OpenAI Agents on Vercel: own the Queue and Sandbox hosting seam

On September 10, 2026, Vercel published a changelog for building with the OpenAI Agents API on Vercel. The split is blunt: OpenAI manages the agent loop and session state; Vercel hosts the application; each session connects to Vercel Sandbox for code and file work. Signed OpenAI webhooks plus Vercel Queues create or reconnect that Sandbox. You get an isolated environment per session, a persistent workspace across follow-ups, and scale-to-zero without an always-on worker.

This post is the **Vercel hosting seam**. It is not the [harness ownership post](/blog/openai-agents-api-owned-repo), which covers what you still own when OpenAI hosts the Codex-style Agents API harness itself.

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*This is an excerpt. Read the full post at [otf-kit.dev/blog/vercel-openai-agents-sandbox](https://otf-kit.dev/blog/vercel-openai-agents-sandbox) — full-stack kits your AI coding agent can actually ship to production. [Browse the kits →](https://otf-kit.dev)*