Search for class names that contain the given query string (case-insensitive).
AI agents call search_class_by_name to retrieve information from Jadx MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only searches and lists classes; it has no side effects, cannot modify data, and cannot execute code. It is purely a read operation that returns decompiled class information based on a search pattern, similar to listing or filtering operations.
From the tool's definition Tool performs a search query ('Search for class names that contain the given query string') which retrieves/queries data without modifying anything. The operation is passive and informational—it returns matching class names from the decompiled codebase.
Documented attack patterns abuse exactly the kind of access search_class_by_name gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Jadx MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_class_by_name:
{
"version": "1",
"default": "deny",
"tools": {
"search_class_by_name": {}
}
}search_class_by_name is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search for class names that contain the given query string (case-insensitive). It is categorised as a Read tool in the Jadx MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Jadx MCP Server MCP server in PolicyLayer and add a rule for search_class_by_name: 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 Jadx MCP Server. Nothing to install.
search_class_by_name is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the search_class_by_name 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 search_class_by_name. 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.
search_class_by_name is provided by the Jadx MCP Server MCP server (mobilehackinglab/jadx-mcp-plugin). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Jadx MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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13 Jadx MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.