slack_unarchive_channel · Mcp Gmail MCP: Risk & Policy

WHAT IT DOES

What slack_unarchive_channel does on Mcp Gmail

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

WHY IT NEEDS A POLICY

Why slack_unarchive_channel needs a policy

Unarchiving a channel modifies channel state reversibly—the channel becomes active again but can be re-archived. This is a Write operation (state modification) rather than Destructive since the action is reversible. The medium severity reflects the potential to restore channels that users or administrators intended to keep archived, which could restore access to unwanted content or cause organizational confusion.

From the tool's definition Tool name 'slack_unarchive_channel' indicates it restores an archived Slack channel to active state. The empty description provides no additional clarification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

slack_unarchive_channel Rate-limited

slack_unarchive_channel 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": {
    "slack_unarchive_channel": {
      "limits": [
        {
          "counter": "slack_unarchive_channel_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 Mcp Gmail, so you can run agents against it safely.

FAQ

Questions about slack_unarchive_channel

What does the slack_unarchive_channel tool do? +

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

How do I enforce a policy on slack_unarchive_channel? +

Register the Mcp Gmail MCP server in PolicyLayer and add a rule for slack_unarchive_channel: 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 Mcp Gmail. Nothing to install.

What risk level is slack_unarchive_channel? +

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

Can I rate-limit slack_unarchive_channel? +

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

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

slack_unarchive_channel is provided by the Mcp Gmail MCP server (@monsoft/mcp-gmail). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.