oakvar_new_module · OakVar MCP Server MCP: Risk & Policy

WHAT IT DOES

What oakvar_new_module does on OakVar MCP Server

AI agents use oakvar_new_module to create or update resources in OakVar MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your OakVar MCP Server environment.

WHY IT NEEDS A POLICY

Why oakvar_new_module needs a policy

This tool creates a new module template, which is a write operation that generates new files/data on the system. It's reversible (the created template can be deleted), so it doesn't qualify as Destructive. Severity is medium as it creates new modules that could potentially affect the genomic analysis pipeline if misconfigured.

From the tool's definition Create a new OakVar module template

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

oakvar_new_module Rate-limited

oakvar_new_module 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": {
    "oakvar_new_module": {
      "limits": [
        {
          "counter": "oakvar_new_module_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 OakVar MCP Server, so you can run agents against it safely.

FAQ

Questions about oakvar_new_module

What does the oakvar_new_module tool do? +

Create a new OakVar module template. It is categorised as a Write tool in the OakVar 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 oakvar_new_module? +

Register the OakVar MCP Server MCP server in PolicyLayer and add a rule for oakvar_new_module: 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 OakVar MCP Server. Nothing to install.

What risk level is oakvar_new_module? +

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

Can I rate-limit oakvar_new_module? +

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

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

oakvar_new_module is provided by the OakVar MCP Server MCP server (miliyarsh/oakvar-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.