bookmarks_edit · Slack MCP: Risk & Policy

WHAT IT DOES

What bookmarks_edit does on Slack

AI agents use bookmarks_edit 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 bookmarks_edit needs a policy

The 'edit' verb indicates reversible modification of bookmarks within Slack. Without a detailed description, confidence is moderate. Severity is medium because bookmark edits affect channel organization and user workspace state, but impact is typically scoped to individual users/channels and reversible.

From the tool's definition Tool name 'bookmarks_edit' indicates modification of bookmark data. Description is empty, limiting certainty. Context from sibling tools (manifest_create, manifest_delete, manifest_update) suggests this server enables data mutation across Slack resources.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

bookmarks_edit Rate-limited

bookmarks_edit 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": {
    "bookmarks_edit": {
      "limits": [
        {
          "counter": "bookmarks_edit_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 bookmarks_edit

What does the bookmarks_edit tool do? +

bookmarks_edit. 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 bookmarks_edit? +

Register the Slack MCP server in PolicyLayer and add a rule for bookmarks_edit: 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 bookmarks_edit? +

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

Can I rate-limit bookmarks_edit? +

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

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

bookmarks_edit 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.