create_base · Graph Rag Obsidian MCP: Risk & Policy

WHAT IT DOES

What create_base does on Graph Rag Obsidian

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

WHY IT NEEDS A POLICY

Why create_base needs a policy

The naming convention 'create_base' indicates a Write operation that creates or initializes a new database/knowledge base object. This is reversible (can be deleted or overwritten), making it Write rather than Destructive. Severity is medium because creating a new base could consume storage resources or affect system organization, but the impact is localized and reversible.

From the tool's definition Tool name is 'create_base' with no description provided. Sibling tools include 'create_note', 'create_folder', and 'archive_note', suggesting this tool performs data creation operations within the Obsidian vault knowledge base system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_base Rate-limited

create_base 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": {
    "create_base": {
      "limits": [
        {
          "counter": "create_base_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 Graph Rag Obsidian, so you can run agents against it safely.

FAQ

Questions about create_base

What does the create_base tool do? +

create_base. It is categorised as a Write tool in the Graph Rag 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 create_base? +

Register the Graph Rag Obsidian MCP server in PolicyLayer and add a rule for create_base: 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 Graph Rag Obsidian. Nothing to install.

What risk level is create_base? +

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

Can I rate-limit create_base? +

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

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

create_base is provided by the Graph Rag Obsidian MCP server (nickshffer/graph-rag-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.