slack_create_channel · Mcp Gmail MCP: Risk & Policy

WHAT IT DOES

What slack_create_channel does on Mcp Gmail

AI agents use slack_create_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_create_channel needs a policy

Creating a Slack channel is a write operation that adds a new resource to a workspace. It is reversible (channels can be deleted) and does not directly access financial systems or execute arbitrary code. Severity is medium because channel creation could be abused to spam, impersonate, or organize unauthorized communications, but the blast radius is limited to workspace-level impacts.

From the tool's definition Tool name 'slack_create_channel' indicates creation of a Slack channel. Description is empty, limiting evidence, but the 'create_' prefix and context of a communication/collaboration tool suggests data creation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

slack_create_channel Rate-limited

slack_create_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_create_channel": {
      "limits": [
        {
          "counter": "slack_create_channel_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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_create_channel

What does the slack_create_channel tool do? +

slack_create_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_create_channel? +

Register the Mcp Gmail MCP server in PolicyLayer and add a rule for slack_create_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_create_channel? +

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

Can I rate-limit slack_create_channel? +

Yes. Add a rate_limit block to the slack_create_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_create_channel completely? +

Set action: deny in the PolicyLayer policy for slack_create_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_create_channel? +

slack_create_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.