⭐ PREFERRED FOR FILE OVERVIEW: Get file structure (exports, functions, classes, imports) without reading full content. Use this INSTEAD OF Read when you need to understand what\
AI agents call get_file_summary to retrieve information from MCP Context Manager without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves structural metadata about code files—a classic read operation. It has no side effects, creates no modifications, executes no external operations, and deletes nothing. The entire purpose is to enable efficient data retrieval to reduce token usage. Severity is low because reading file metadata presents minimal risk even if misused by an AI agent.
From the tool's definition Tool name is 'get_file_summary' and description states it retrieves 'file structure (exports, functions, classes, imports) without reading full content.' The verb 'Get' and context 'PREFERRED FOR FILE OVERVIEW' indicate data retrieval with no modifications.
Documented attack patterns abuse exactly the kind of access get_file_summary gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Context Manager, and nothing reaches the server without passing your rules. This is the rule we recommend for get_file_summary:
{
"version": "1",
"default": "deny",
"tools": {
"get_file_summary": {}
}
}get_file_summary is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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⭐ PREFERRED FOR FILE OVERVIEW: Get file structure (exports, functions, classes, imports) without reading full content. Use this INSTEAD OF Read when you need to understand what\. It is categorised as a Read tool in the MCP Context Manager MCP Server, which means it retrieves data without modifying state.
Register the MCP Context Manager MCP server in PolicyLayer and add a rule for get_file_summary: 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 MCP Context Manager. Nothing to install.
get_file_summary 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 get_file_summary 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 get_file_summary. 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.
get_file_summary is provided by the MCP Context Manager MCP server (transparentlyok/mcp-context-manager). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Context Manager, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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21 MCP Context Manager tools catalogued and risk-classified — across an index of 43,000+ MCP servers.