unpublish · Yadisk MCP: Risk & Policy

WHAT IT DOES

What unpublish does on Yadisk

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

WHY IT NEEDS A POLICY

Why unpublish needs a policy

Unpublishing revokes public access, which modifies the sharing/visibility settings of a resource. This is a reversible write operation (access can be re-granted by publishing again). It does not delete data, execute code, or involve finances.

From the tool's definition Revoke public access to a file or folder

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

unpublish Rate-limited

unpublish 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": {
    "unpublish": {
      "limits": [
        {
          "counter": "unpublish_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 Yadisk, so you can run agents against it safely.

FAQ

Questions about unpublish

What does the unpublish tool do? +

Revoke public access to a file or folder. It is categorised as a Write tool in the Yadisk MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on unpublish? +

Register the Yadisk MCP server in PolicyLayer and add a rule for unpublish: 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 Yadisk. Nothing to install.

What risk level is unpublish? +

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

Can I rate-limit unpublish? +

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

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

unpublish is provided by the Yadisk MCP server (patr56/yadisk-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.