search_by_regex_tool

What search_by_regex_tool does on Obsidian MCP Server

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

Why search_by_regex_tool is rated Low

Search operations retrieve data without modifying state or triggering side effects. Even though regex patterns could theoretically be complex, the tool's purpose is to find and return matching content from notes, not execute arbitrary code or modify data. This is a Read operation with low severity—misuse would return unwanted search results, not cause data loss or system compromise.

From the tool's definition Tool name contains 'search' and is described as part of a suite that provides 'regex support' for 'fast searches'. The broader server description emphasizes 'reading' and 'searching' capabilities.

The rule that runs search_by_regex_tool safely

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

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

Questions about search_by_regex_tool