list_tags_tool
AI agents call list_tags_tool to retrieve information from Obsidian 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 tag data from the Obsidian vault without modifying, creating, or deleting content. It has no side effects and minimal blast radius if misused by an AI agent—worst case being exposure of tag metadata that is already stored in the vault.
From the tool's definition Tool name 'list_tags_tool' indicates a retrieval operation that lists existing tags. The server context shows this is part of an Obsidian vault management suite where 'list' operations are read-only queries (similar pattern to 'find_broken_links_tool',…
Attacks that exploit this kind of access
list_tags_tool. It is categorised as a Read tool in the Obsidian MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Obsidian MCP Server MCP server in PolicyLayer and add a rule for list_tags_tool: 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 Obsidian MCP Server. Nothing to install.
list_tags_tool 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 list_tags_tool 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 list_tags_tool. 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.
list_tags_tool is provided by the Obsidian MCP Server MCP server (suhailnajeeb/obsidian-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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