Vercel Sandbox firewall now supports request proxying and filtering
Vercel's sandbox firewall just got proxy routing. Developers can now intercept, log, and transform AI agent requests in real time.
Why it matters
As AI agents become production workloads, infrastructure-layer visibility and control are becoming table stakes. Vercel's new proxy and filtering capabilities let teams observe and modify sandbox traffic without rebuilding their entire execution pipeline.
The key facts
11 to knowVercel Sandbox firewall now supports HTTP request forwarding to custom proxies
Matchers enable fine-grained filtering by path, method, query string, and headers
Credentials brokering limits sensitive data exposure to only requests that need it
Feature available in beta for Pro and Enterprise plans
Includes OIDC token authentication for proxy verification
Relevant for teams running agents, code execution, or multi-step AI workflows that need observability
Request proxying now available for HTTP forwarding to user-controlled servers
Matchers enable filtering by path, method, query string, and headers
Credentials brokering support for selective request transformation
Vercel-issued OIDC token support for proxy authentication
SDK: @vercel/sandbox@beta
Go to the source
Vercel Blogvercel.com
Publisher excerpt: The now supports forwarding specific HTTP requests to a proxy you control. You can also use matchers to filter forwarding and credentials brokering to only the requests that need it.Vercel Sandbox firewall You can now route outbound sandbox traffic through your own proxy for logging, debugging, or…