search_by_file_path
AI agents call search_by_file_path to retrieve information from Understand-Anything MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries data from a codebase Knowledge Graph indexed by file path. It has no side effects—it reads information to enable code understanding. The empty description and consistent naming pattern with other read-only query tools on the server support classification as Read. Severity is low because querying a static Knowledge Graph of a codebase poses minimal risk even if misused.
From the tool's definition Tool name 'search_by_file_path' indicates a search/query operation; no description provided but consistent with sibling tools ('find_entry_points', 'find_impact', 'find_path', 'get_class_hierarchy', etc.) which are all read-only graph queries.
Attacks that exploit this kind of access
search_by_file_path. It is categorised as a Read tool in the Understand-Anything MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Understand-Anything MCP Server MCP server in PolicyLayer and add a rule for search_by_file_path: 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 Understand-Anything MCP Server. Nothing to install.
search_by_file_path 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_by_file_path 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_by_file_path. 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_by_file_path is provided by the Understand-Anything MCP Server MCP server (viethoangnguyenle/understand-anything-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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