slack_invite_to_channel · Mcp Gmail MCP: Risk & Policy

WHAT IT DOES

What slack_invite_to_channel does on Mcp Gmail

AI agents use slack_invite_to_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_invite_to_channel needs a policy

The tool creates or modifies access/membership data by inviting users to a channel. This is reversible (users can be uninvited), so it falls under Write rather than Destructive. Severity is medium because misuse could grant inappropriate access to sensitive channels, but the blast radius is limited to channel membership.

From the tool's definition Tool name 'slack_invite_to_channel' indicates it adds users to Slack channels; the tool operates on the Mcp Gmail server but targets Slack integration. This is a Write operation as it modifies channel membership state (reversibly—users can be removed).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

slack_invite_to_channel Rate-limited

slack_invite_to_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_invite_to_channel": {
      "limits": [
        {
          "counter": "slack_invite_to_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_invite_to_channel

What does the slack_invite_to_channel tool do? +

slack_invite_to_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_invite_to_channel? +

Register the Mcp Gmail MCP server in PolicyLayer and add a rule for slack_invite_to_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_invite_to_channel? +

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

Can I rate-limit slack_invite_to_channel? +

Yes. Add a rate_limit block to the slack_invite_to_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_invite_to_channel completely? +

Set action: deny in the PolicyLayer policy for slack_invite_to_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_invite_to_channel? +

slack_invite_to_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.