obsidian_remove_tag · Mcp Apple Obsidian MCP: Risk & Policy

WHAT IT DOES

What obsidian_remove_tag does on Mcp Apple Obsidian

AI agents use obsidian_remove_tag to create or update resources in Mcp Apple Obsidian — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Apple Obsidian environment.

WHY IT NEEDS A POLICY

Why obsidian_remove_tag needs a policy

Removing a tag modifies the note's metadata/content but does not delete the note itself. The operation is reversible (the tag can be re-added), so this falls under Write rather than Destructive. Misuse could result in loss of organizational structure across notes, hence medium severity.

From the tool's definition Remove a tag from a note

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

obsidian_remove_tag Rate-limited

obsidian_remove_tag stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "obsidian_remove_tag": {
      "limits": [
        {
          "counter": "obsidian_remove_tag_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Mcp Apple Obsidian, so you can run agents against it safely.

FAQ

Questions about obsidian_remove_tag

What does the obsidian_remove_tag tool do? +

Remove a tag from a note. It is categorised as a Write tool in the Mcp Apple Obsidian MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on obsidian_remove_tag? +

Register the Mcp Apple Obsidian MCP server in PolicyLayer and add a rule for obsidian_remove_tag: 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 Apple Obsidian. Nothing to install.

What risk level is obsidian_remove_tag? +

obsidian_remove_tag is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit obsidian_remove_tag? +

Yes. Add a rate_limit block to the obsidian_remove_tag 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.

How do I block obsidian_remove_tag completely? +

Set action: deny in the PolicyLayer policy for obsidian_remove_tag. 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.

What MCP server provides obsidian_remove_tag? +

obsidian_remove_tag is provided by the Mcp Apple Obsidian MCP server (rex/mcp-apple-obsidian). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.