mcp_list_indexes

What mcp_list_indexes does on Mongo-MCP

AI agents call mcp_list_indexes to retrieve information from Mongo-MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Why mcp_list_indexes is rated Low

This tool retrieves metadata about indexes on a MongoDB collection or database. Listing indexes is a read-only operation with no side effects—it queries existing index definitions without modifying data or structure. Even in the context of a server with destructive capabilities (mcp_delete_document, mcp_drop_collection), index listing remains a safe informational query.

From the tool's definition Tool name 'mcp_list_indexes' indicates a listing/retrieval operation. The 'list' verb aligns with Read category operations (search, list, get, fetch). No description provided, but the naming pattern is consistent with non-mutating MongoDB introspection.

The rule that runs mcp_list_indexes safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mongo-MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For mcp_list_indexes, this is the rule to start with:

{
  "version": "1",
  "default": "deny",
  "tools": {
    "mcp_list_indexes": {}
  }
}

Questions about mcp_list_indexes