suggest_links

THE RISK

Low Risk

Why suggest_links needs a policy

The tool suggests links rather than creating or modifying them. Suggestions are read-only recommendations; no data is written, deleted, or executed. The word 'suggest' implies returning proposed links for user review, not applying them automatically.

From the tool's definition AI-powered suggestions for internal links

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

POLICY

How to control suggest_links

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 suggest_links:

policy.json

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

suggest_links 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

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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 suggest_links

What does the suggest_links tool do? +

AI-powered suggestions for internal links. 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 suggest_links? +

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

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

Can I rate-limit suggest_links? +

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

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

suggest_links 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 →