AI agents call dnd_team_info to retrieve information from Slack without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves status information about Do Not Disturb settings for team members. It performs a query operation that reads existing data without creating, modifying, deleting, or executing any actions. The blast radius of misuse is minimal—an attacker gains only visibility into user status information, which poses a low security risk.
From the tool's definition Tool name 'dnd_team_info' and description 'Retrieve the Do Not Disturb status for users on a team' indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Retrieve the Do Not Disturb status for users on a team. It is categorised as a Read tool in the Slack MCP Server, which means it retrieves data without modifying state.
Register the Slack MCP server in PolicyLayer and add a rule for dnd_team_info: 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.
dnd_team_info is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the dnd_team_info 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.
Set action: deny in the PolicyLayer policy for dnd_team_info. 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.
dnd_team_info 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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