slack_lists_items_list

A read tool on the Slack MCP server.

SERVERSlack SOURCEkarbassi/slack-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/karbassi-slack-mcp/slack-lists-items-list.md

WHAT IT DOES

What slack_lists_items_list does on Slack

AI agents call slack_lists_items_list to retrieve information from Slack without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why slack_lists_items_list is rated Low

This tool retrieves items from Slack lists without modifying or deleting them. It is a Read operation. Severity is medium because Slack lists may contain sensitive business information, team decisions, or task data that could be misused if accessed by a compromised agent, but the operation itself is non-destructive.

From the tool's definition Tool name 'slack_lists_items_list' indicates a list/retrieval operation. Server description confirms it provides access to Slack 'lists' among other data types.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs slack_lists_items_list safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Slack, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For slack_lists_items_list, this is the rule to start with:

slack_lists_items_list Allowed

slack_lists_items_list is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "slack_lists_items_list": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Slack, apply this rule, and every slack_lists_items_list call is checked against it from then on.

FAQ

Questions about slack_lists_items_list

What does the slack_lists_items_list tool do? +

slack_lists_items_list is a read tool on the Slack MCP server. It is categorised as a Read tool in the Slack MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on slack_lists_items_list? +

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

slack_lists_items_list is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit slack_lists_items_list? +

Yes. Add a rate_limit block to the slack_lists_items_list 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_lists_items_list completely? +

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

slack_lists_items_list 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.

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