most_connected_notes

THE RISK

Low Risk

Why most_connected_notes needs a policy

This tool queries and retrieves graph/link data about notes in the vault, identifying which notes have the most connections. It is a read-only analytical operation with no side effects.

From the tool's definition Find notes with the most connections

Documented attack patterns abuse exactly the kind of access most_connected_notes gives an agent:

POLICY

How to control most_connected_notes

PolicyLayer is an MCP gateway — it sits between your AI agents and Obsidian MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for most_connected_notes:

policy.json

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

most_connected_notes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Obsidian MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about most_connected_notes

What does the most_connected_notes tool do? +

Find notes with the most connections. It is categorised as a Read tool in the Obsidian MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on most_connected_notes? +

Register the Obsidian MCP Server MCP server in PolicyLayer and add a rule for most_connected_notes: 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.

What risk level is most_connected_notes? +

most_connected_notes is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit most_connected_notes? +

Yes. Add a rate_limit block to the most_connected_notes 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 most_connected_notes completely? +

Set action: deny in the PolicyLayer policy for most_connected_notes. 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 most_connected_notes? +

most_connected_notes is provided by the Obsidian MCP Server MCP server (kynlos/obsidian-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Obsidian MCP Server tool call.

Start from Obsidian MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →