Android XR SDK reference (Developer Preview 3, December 2025). Samsung Galaxy XR launched October 2025. 5+ XR devices expected in 2026. Standard Compose apps run as 2D panels on XR headsets — no SDK required. XR SDK adds spatial APIs: SpatialPanel (3D positioned UI), UserSubspace (follows user), ...
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AI agents invoke android_xr_guide to trigger processes or run actions in AndroJack MCP. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
android_xr_guide can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. PolicyLayer enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
{
"version": "1",
"default": "deny",
"tools": {
"android_xr_guide": {
"limits": [
{
"counter": "android_xr_guide_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}See the full AndroJack MCP policy for all 22 tools.
These attack patterns abuse exactly the kind of access android_xr_guide gives an agent. Each links to the full case and the policy that stops it:
Other execute tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Android XR SDK reference (Developer Preview 3, December 2025). Samsung Galaxy XR launched October 2025. 5+ XR devices expected in 2026. Standard Compose apps run as 2D panels on XR headsets — no SDK required. XR SDK adds spatial APIs: SpatialPanel (3D positioned UI), UserSubspace (follows user), Orbiter (floating toolbar that orbits a panel), SubspaceModifier (size as fraction of field of view). Material 3 components automatically become spatial in XR — TopAppBar → Orbiter, etc. AI tools generate phone Compose code for XR — technically works but misses all spatial value. Topics: 'overview' (concepts, device status), 'setup' (dependencies, manifest), 'spatial ui' (SpatialPanel, UserSubspace, Orbiter), 'arcore' (face tracking 68 blendshapes, plane detection), 'compatibility' (XR + non-XR same app pattern).. It is categorised as a Execute tool in the AndroJack MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the AndroJack MCP server in PolicyLayer and add a rule for android_xr_guide: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches AndroJack MCP. Nothing to install.
android_xr_guide is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the android_xr_guide rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for android_xr_guide. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
android_xr_guide is provided by the AndroJack MCP server (VIKAS9793/androjack-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 22 AndroJack MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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