views_publish · Slack MCP: Risk & Policy

WHAT IT DOES

What views_publish does on Slack

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

WHY IT NEEDS A POLICY

Why views_publish needs a policy

Without an explicit description, classification relies on the tool name and context. 'Publish' indicates a write operation that creates or modifies Slack views/content. This is reversible (views can be updated or unpublished), placing it in Write rather than Destructive. Severity is high because a compromised agent could publish misleading, phishing, or spam content to users' Slack workspaces, affecting many users.

From the tool's definition Tool name 'views_publish' suggests publishing or posting content to Slack views (likely modal dialogs, home tabs, or other UI surfaces).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

views_publish Rate-limited

views_publish 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": {
    "views_publish": {
      "limits": [
        {
          "counter": "views_publish_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, so you can run agents against it safely.

FAQ

Questions about views_publish

What does the views_publish tool do? +

views_publish. It is categorised as a Write tool in the 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 views_publish? +

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

What risk level is views_publish? +

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

Can I rate-limit views_publish? +

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

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

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