CALL THIS AFTER GENERATING EVERY ANDROID CODE BLOCK. This is the Level 3 loop-back gate: validates AI-generated Kotlin, XML, and Gradle code against 24 Android-specific rules before the user sees it. Detects removed APIs (AsyncTask, TestCoroutineDispatcher), deprecated patterns (ContextualFlowRow...
Risk signalsAccepts freeform code/query input (code) · Bulk/mass operation — affects multiple targets
Part of the AndroJack MCP server.
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AI agents invoke android_code_validator 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_code_validator 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_code_validator": {
"limits": [
{
"counter": "android_code_validator_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_code_validator 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.
CALL THIS AFTER GENERATING EVERY ANDROID CODE BLOCK. This is the Level 3 loop-back gate: validates AI-generated Kotlin, XML, and Gradle code against 24 Android-specific rules before the user sees it. Detects removed APIs (AsyncTask, TestCoroutineDispatcher), deprecated patterns (ContextualFlowRow, NavController in new code, SharedPreferences), Android 16 violations (orientation locks, resizeableActivity=false), and structural issues (GlobalScope.launch, runBlocking in UI). Returns: verdict (PASS/WARN/FAIL), line-level violations with replacements and doc URLs, and explicit next-step instructions. If verdict is FAIL: fix all errors and re-run before returning code to the user. Inputs: code (required), language ('kotlin'|'xml'|'gradle', auto-detected if omitted), minSdk and targetSdk for context-aware API level checks.. 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_code_validator: 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_code_validator 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_code_validator 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_code_validator. 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_code_validator 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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