ops_broadcast_prepare · Slack Max API MCP: Risk & Policy

WHAT IT DOES

What ops_broadcast_prepare does on Slack Max API MCP

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

WHY IT NEEDS A POLICY

Why ops_broadcast_prepare needs a policy

This tool creates a broadcast draft—a data structure that is written to Slack's system and tracked. While the action is reversible (the draft can be discarded), it modifies workspace state by introducing a new tracked object. Severity is high because a malicious agent could create numerous broadcast drafts targeting many channels, cluttering the workspace or preparing for spam/phishing campaigns at scale.

From the tool's definition "Create a tracked broadcast draft" indicates the tool creates a new message artifact (broadcast draft) that is stored and tracked, which is a reversible write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ops_broadcast_prepare Rate-limited

ops_broadcast_prepare 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": {
    "ops_broadcast_prepare": {
      "limits": [
        {
          "counter": "ops_broadcast_prepare_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 Slack Max API MCP, so you can run agents against it safely.

FAQ

Questions about ops_broadcast_prepare

What does the ops_broadcast_prepare tool do? +

Create a tracked broadcast draft before sending it to one or more channels. It is categorised as a Write tool in the Slack Max API MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on ops_broadcast_prepare? +

Register the Slack Max API MCP server in PolicyLayer and add a rule for ops_broadcast_prepare: 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 Slack Max API MCP. Nothing to install.

What risk level is ops_broadcast_prepare? +

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

Can I rate-limit ops_broadcast_prepare? +

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

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

ops_broadcast_prepare is provided by the Slack Max API MCP server (jeongwoobin335/slack-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.