send-a-new-message

THE RISK

High Risk

Why send-a-new-message needs a policy

Sending a message triggers an external communication operation (SMS, email, or other channel) to a real recipient. This is not merely writing data to a database — it executes an outbound action with real-world effects (contacting people). The blast radius is high because an AI agent could spam or harass contacts at scale if misused.

From the tool's definition 'send a new message' and 'Post the necessary fields for the API to send a new message'

Documented attack patterns abuse exactly the kind of access send-a-new-message gives an agent:

POLICY

How to control send-a-new-message

PolicyLayer is an MCP gateway — it sits between your AI agents and GoHighLevel MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for send-a-new-message:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "send-a-new-message": {
      "limits": [
        {
          "counter": "send-a-new-message_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

send-a-new-message 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.

Create a free account and register GoHighLevel MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

High-risk tools in GoHighLevel MCP Server → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about send-a-new-message

What does the send-a-new-message tool do? +

Post the necessary fields for the API to send a new message. It is categorised as a Execute tool in the GoHighLevel 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 send-a-new-message? +

Register the GoHighLevel MCP Server MCP server in PolicyLayer and add a rule for send-a-new-message: 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 GoHighLevel MCP Server. Nothing to install.

What risk level is send-a-new-message? +

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

Can I rate-limit send-a-new-message? +

Yes. Add a rate_limit block to the send-a-new-message 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 send-a-new-message completely? +

Set action: deny in the PolicyLayer policy for send-a-new-message. 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 send-a-new-message? +

send-a-new-message is provided by the GoHighLevel MCP Server MCP server (drausal/gohighlevel-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every GoHighLevel MCP Server tool call.

Start from GoHighLevel MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →