generate_obsidian_uri

THE RISK

Medium Risk

Why generate_obsidian_uri needs a policy

This tool creates URI references (reversible, non-destructive operations). It does not execute code, delete data, or move resources. Generating URIs is a write operation that modifies or creates link metadata/references. The severity is low because misuse would only create incorrect or unwanted links, which are easily corrected or ignored without data loss.

From the tool's definition Tool name 'generate_obsidian_uri' and description 'Create obsidian:// URI for deep linking' indicate generation/creation of URI strings that establish links within the Obsidian vault system.

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

POLICY

How to control generate_obsidian_uri

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 generate_obsidian_uri:

policy.json

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

generate_obsidian_uri 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.

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.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about generate_obsidian_uri

What does the generate_obsidian_uri tool do? +

Create obsidian:// URI for deep linking. It is categorised as a Write tool in the Obsidian MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_obsidian_uri? +

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

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

Can I rate-limit generate_obsidian_uri? +

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

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

generate_obsidian_uri 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 →