email · Brevo MCP Server MCP: Risk & Policy

WHAT IT DOES

What email does on Brevo MCP Server

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

WHY IT NEEDS A POLICY

Why email needs a policy

This tool performs email sending, which is a Write operation (creates and modifies email data). It does not delete or destroy data (Destructive), nor does it move money (Financial). While email sending could have significant business impact if misused at scale (spam, incorrect recipients, sensitive data), the primary action is data creation/modification rather than code execution or deletion.

From the tool's definition Transactional email operations - send emails, manage templates, track events. The tool explicitly performs 'send emails' which creates and transmits data (email messages). Managing templates modifies stored email content.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

email Rate-limited

email 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": {
    "email": {
      "limits": [
        {
          "counter": "email_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Brevo MCP Server, so you can run agents against it safely.

FAQ

Questions about email

What does the email tool do? +

Transactional email operations - send emails, manage templates, track events. It is categorised as a Write tool in the Brevo MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on email? +

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

What risk level is email? +

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

Can I rate-limit email? +

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

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

email is provided by the Brevo MCP Server MCP server (samihalawa/brevo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.