AI agents call search_in_files to retrieve information from Xcode without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information by searching text content—a read-only operation with no side effects, reversible changes, code execution, data destruction, or financial impact. The low severity reflects minimal blast radius if misused by an AI agent; worst case would be unauthorized information disclosure of source code within the project.
From the tool's definition Tool name 'search_in_files' and description 'Searches for text content within files in a directory' indicate a query/search operation with no modification or execution capabilities.
Documented attack patterns abuse exactly the kind of access search_in_files gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Xcode, and nothing reaches the server without passing your rules. This is the rule we recommend for search_in_files:
{
"version": "1",
"default": "deny",
"tools": {
"search_in_files": {}
}
}search_in_files is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Searches for text content within files in a directory. It is categorised as a Read tool in the Xcode MCP Server, which means it retrieves data without modifying state.
Register the Xcode MCP server in PolicyLayer and add a rule for search_in_files: 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 Xcode. Nothing to install.
search_in_files 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_in_files 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_in_files. 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_in_files is provided by the Xcode MCP server (xcode-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 69 Xcode tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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69 Xcode tools catalogued and risk-classified — across an index of 42,500+ MCP servers.