slack_notify

Send a notification message to a Slack channel

SERVERFrontmcp SOURCEagentfront/frontmcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/frontmcp/slack-notify.md

WHAT IT DOES

What slack_notify does on Frontmcp

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

RISK

Why slack_notify is rated Medium

This tool creates new data (a message) in Slack, which is reversible (messages can be edited or deleted). It does not execute arbitrary code, delete data, or move money. The severity is medium because misuse could spam channels, disrupt workflows, or send sensitive information to unintended recipients, but the impact is containable and not system-critical.

From the tool's definition Tool description states 'Send a notification message to a Slack channel' — this creates/posts a message to an external system, modifying the state of Slack channels.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs slack_notify safely

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

slack_notify Rate-limited

slack_notify 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": {
    "slack_notify": {
      "limits": [
        {
          "counter": "slack_notify_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about slack_notify

What does the slack_notify tool do? +

Send a notification message to a Slack channel. It is categorised as a Write tool in the Frontmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on slack_notify? +

Register the Front MCP server in PolicyLayer and add a rule for slack_notify: 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 Frontmcp. Nothing to install.

What risk level is slack_notify? +

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

Can I rate-limit slack_notify? +

Yes. Add a rate_limit block to the slack_notify 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_notify completely? +

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

slack_notify is provided by the Front MCP server (agentfront/frontmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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