sync_channel_permissions · Discord MCP: Risk & Policy

WHAT IT DOES

What sync_channel_permissions does on Discord

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

WHY IT NEEDS A POLICY

Why sync_channel_permissions needs a policy

Syncing channel permissions typically means applying the parent category's permissions to a channel, overwriting any custom permission overwrites. This is a Write operation (reversible configuration change). It could affect who can access or interact with a channel, giving it medium severity. Confidence is reduced due to the truncated description.

From the tool's definition 'sync_channel_permissions' - the description is truncated ('Sync a channel\') and provides minimal information, but the name implies synchronizing permission settings for a channel, which is a reversible modification of channel configuration.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sync_channel_permissions Rate-limited

sync_channel_permissions 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": {
    "sync_channel_permissions": {
      "limits": [
        {
          "counter": "sync_channel_permissions_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 Discord, so you can run agents against it safely.

FAQ

Questions about sync_channel_permissions

What does the sync_channel_permissions tool do? +

Sync a channel\. It is categorised as a Write tool in the Discord MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on sync_channel_permissions? +

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

What risk level is sync_channel_permissions? +

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

Can I rate-limit sync_channel_permissions? +

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

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

sync_channel_permissions is provided by the Discord MCP server (scarecr0w12/discord-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.