patchplaylist · Revel Digital MCP Server MCP: Risk & Policy

WHAT IT DOES

What patchplaylist does on Revel Digital MCP Server

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

WHY IT NEEDS A POLICY

Why patchplaylist needs a policy

This tool modifies an existing playlist using JSON Patch for partial updates. It is a reversible write operation (the playlist still exists and can be patched again), so it falls under Write rather than Destructive. Misuse could corrupt playlist configurations affecting digital signage displays, giving it medium severity.

From the tool's definition Patch a playlist. Patch allows partial updates by targeting specific properties of the playlist.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

patchplaylist Rate-limited

patchplaylist 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": {
    "patchplaylist": {
      "limits": [
        {
          "counter": "patchplaylist_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 Revel Digital MCP Server, so you can run agents against it safely.

FAQ

Questions about patchplaylist

What does the patchplaylist tool do? +

Patch a playlist. Patch allows partial updates by targeting specific properties of the playlist. Uses the JSON Patch syntax (http://jsonpatch.com). It is categorised as a Write tool in the Revel Digital 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 patchplaylist? +

Register the Revel Digital MCP Server MCP server in PolicyLayer and add a rule for patchplaylist: 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 Revel Digital MCP Server. Nothing to install.

What risk level is patchplaylist? +

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

Can I rate-limit patchplaylist? +

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

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

patchplaylist is provided by the Revel Digital MCP Server MCP server (reveldigital/reveldigital-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.