Module capability 

The one place each host capability is decided. lx.supports(), the FFI capability bitmask, and the optional lx.* members all read these, so they cannot drift apart.

Modules

build

What the binary carries, independent of what an app declared. The native SDKs’ capability bitmask reports this.

Functions

app_use

Driving this product’s own windows and its command line. computerUse already contains it, so it answers for both — the same rule the local control surface enforces.

browser

Managed browser tabs and the browser shell.

browser_use

Driving the in-app browser’s tabs. capabilities.browser is the prerequisite — there is nothing to drive without the engine — so both have to be on. The declared flag alone would let lx.supports lie.

computer_use

Driving the whole machine: screenshots, synthetic input, the a11y tree.

media_capture

Realtime capture tracks declared by the host.

notifications

Host notifications.

proxy

The in-app browser’s HTTP proxy. capabilities.proxy declares it and capabilities.browser is its prerequisite — a proxy with nothing to proxy is not a capability — so both have to be on.