note_complexity

THE RISK

Low Risk

Why note_complexity needs a policy

This tool reads and analyzes a note to compute complexity and readability metrics. It performs no writes, executions, or destructive actions — it is purely a read/analysis operation with minimal blast radius.

From the tool's definition Analyze note complexity and readability

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

POLICY

How to control note_complexity

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 note_complexity:

policy.json

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

note_complexity 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

More Obsidian MCP Server tools

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All 120 Obsidian MCP Server tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

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 note_complexity

What does the note_complexity tool do? +

Analyze note complexity and readability. 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 note_complexity? +

Register the Obsidian MCP Server MCP server in PolicyLayer and add a rule for note_complexity: 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 note_complexity? +

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

Can I rate-limit note_complexity? +

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

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

note_complexity 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 →