set_default_channel · Cursor EOD MCP (Slack) MCP

WHAT IT DOES

What set_default_channel does on Cursor EOD MCP (Slack)

AI agents use set_default_channel to create or update resources in Cursor EOD MCP (Slack) — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Cursor EOD MCP (Slack) environment.

WHY IT NEEDS A POLICY

Why set_default_channel needs a policy

This is a Write operation because it creates or modifies data reversibly—specifically, the default channel configuration. While it doesn't directly send messages or delete data, it changes application state that affects downstream behavior (where EOD updates are sent).

From the tool's definition The tool 'set_default_channel' modifies configuration state by setting a default Slack channel for EOD status updates. The verb 'set' and description 'Set the default Slack channel' indicate a write operation that changes stored preferences or settings.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_default_channel Rate-limited

set_default_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": {
    "set_default_channel": {
      "limits": [
        {
          "counter": "set_default_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 Cursor EOD MCP (Slack), so you can run agents against it safely.

FAQ

Questions about set_default_channel

What does the set_default_channel tool do? +

Set the default Slack channel for EOD status updates. It is categorised as a Write tool in the Cursor EOD MCP (Slack) MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_default_channel? +

Register the Cursor EOD MCP (Slack) MCP server in PolicyLayer and add a rule for set_default_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 Cursor EOD MCP (Slack). Nothing to install.

What risk level is set_default_channel? +

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

Can I rate-limit set_default_channel? +

Yes. Add a rate_limit block to the set_default_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 set_default_channel completely? +

Set action: deny in the PolicyLayer policy for set_default_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 set_default_channel? +

set_default_channel is provided by the Cursor EOD MCP (Slack) MCP server (sackeydavid/cursor-eod-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.