commands_list

List available slash commands (legacy undocumented).

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/commands-list.md

WHAT IT DOES

What commands_list does on Slack

AI agents call commands_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 commands_list is rated Low

This tool retrieves and enumerates available slash commands in a Slack workspace. It is a read-only operation that fetches metadata about commands without modifying, executing, or deleting any data. The 'list' operation is inherently non-destructive and informational.

From the tool's definition Tool name 'commands_list' and description 'List available slash commands' indicate a query/retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs commands_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 commands_list, this is the rule to start with:

commands_list Allowed

commands_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": {
    "commands_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 commands_list call is checked against it from then on.

FAQ

Questions about commands_list

What does the commands_list tool do? +

List available slash commands (legacy undocumented). 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 commands_list? +

Register the Slack MCP server in PolicyLayer and add a rule for commands_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 commands_list? +

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

Can I rate-limit commands_list? +

Yes. Add a rate_limit block to the commands_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 commands_list completely? +

Set action: deny in the PolicyLayer policy for commands_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 commands_list? +

commands_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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