Vercel AI Gateway Security: The Routing Layer It Gives You and the Authorization Layer It Leaves Behind
Vercel AI Gateway gives a team one OpenAI-compatible endpoint in front of hundreds of models, with a single API key, automatic provider failover, spend limits, and per-request observability. Those features route and meter the traffic. They stop at the question of whether the authenticated caller behind a request is permitted to send this particular prompt, carrying this data classification, to this model. This piece walks the controls Vercel ships, marks where they stop, and shows the identity-aware authorization layer that closes the post-authentication gap on AI gateway traffic.