arvan_notify_slack

Post a message to a Slack incoming webhook.

SERVERArvanCloud MCP Server SOURCEdwin-gharibi/arvancloud-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dwin-gharibi-arvancloud-mcp/arvan-notify-slack.md

WHAT IT DOES

What arvan_notify_slack does on ArvanCloud MCP Server

AI agents invoke arvan_notify_slack to trigger actions in ArvanCloud MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why arvan_notify_slack is rated High

This tool triggers an external operation by sending a message to Slack via a webhook. It doesn't merely read or write local data — it executes an outbound HTTP request to an external service (Slack), which constitutes triggering an external operation. Misuse could lead to spam, data exfiltration, or social engineering via Slack channels, hence medium severity.

From the tool's definition Post a message to a Slack incoming webhook

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs arvan_notify_slack safely

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

arvan_notify_slack Rate-limited

arvan_notify_slack stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "arvan_notify_slack": {
      "limits": [
        {
          "counter": "arvan_notify_slack_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about arvan_notify_slack

What does the arvan_notify_slack tool do? +

Post a message to a Slack incoming webhook. It is categorised as a Execute tool in the ArvanCloud MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on arvan_notify_slack? +

Register the ArvanCloud MCP Server MCP server in PolicyLayer and add a rule for arvan_notify_slack: 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 ArvanCloud MCP Server. Nothing to install.

What risk level is arvan_notify_slack? +

arvan_notify_slack is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit arvan_notify_slack? +

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

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

arvan_notify_slack is provided by the ArvanCloud MCP Server MCP server (dwin-gharibi/arvancloud-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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