I Tested 18 MCP Servers Against a Sandbox. Here's What Happened.
14 pass, 2 conditional, 2 fail — the full compatibility matrix for running real-world MCP servers under Warden, with pinned policies and honest failure classifications.
By Prof-bilal
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How Warden works under the hood: policy enforcement, sandboxing backends, and platform internals.
Windows Sandboxing Is 10x Harder Than Linux
Bubblewrap just works. AppContainer + WFP + ETW + Job Objects do not — two DLL binding bugs, caught only by real Windows CI, and what they teach about cross-platform security tools.
By Prof-bilal
How Warden Enforces Policies
A walkthrough of the Warden enforcement path: how a policy.yaml becomes OS-level sandbox rules, how deny-by-default checks run, and what happens on failure.
By Prof-bilal
Warden backends: bubblewrap, Seatbelt, AppContainer
How Warden maps one deny-by-default policy onto three different OS sandbox mechanismsLinux bubblewrap, macOS Seatbelt, and Windows AppContainer with WFP and Job Objects.
By Prof-bilal