owui_create_knowledge · ML Lab MCP: Risk & Policy

WHAT IT DOES

What owui_create_knowledge does on ML Lab MCP

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

WHY IT NEEDS A POLICY

Why owui_create_knowledge needs a policy

This tool creates a new knowledge base, which is a reversible write operation. It modifies the state of the Open WebUI system by adding a new resource, but does not execute arbitrary code, delete data, or commit financial transactions. The severity is medium because a malicious actor could create unwanted knowledge bases consuming resources, but this is not as severe as Execute or Destructive operations.

From the tool's definition Tool name includes 'create' and description states 'Create a knowledge base in Open WebUI', which is a data creation operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

owui_create_knowledge Rate-limited

owui_create_knowledge 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": {
    "owui_create_knowledge": {
      "limits": [
        {
          "counter": "owui_create_knowledge_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 ML Lab MCP, so you can run agents against it safely.

FAQ

Questions about owui_create_knowledge

What does the owui_create_knowledge tool do? +

Create a knowledge base in Open WebUI. It is categorised as a Write tool in the ML Lab MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on owui_create_knowledge? +

Register the ML Lab MCP server in PolicyLayer and add a rule for owui_create_knowledge: 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 ML Lab MCP. Nothing to install.

What risk level is owui_create_knowledge? +

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

Can I rate-limit owui_create_knowledge? +

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

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

owui_create_knowledge is provided by the ML Lab MCP server (pushpullcommitpush/ml-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.