purchase_phone_number

THE RISK

Critical Risk

Purchasing a phone number involves a financial commitment (recurring or one-time charge) to acquire a telephony resource. This is a Financial category action as it directly incurs costs and cannot typically be reversed without potential loss of fees. Misuse by an AI agent could result in unintended financial charges.

From the tool's definition 'Purchase a phone number' — the word 'purchase' explicitly indicates a financial transaction that commits monetary obligations

Documented attack patterns abuse exactly the kind of access purchase_phone_number gives an agent:

HOW TO CONTROL PURCHASE_PHONE_NUMBER

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 purchase_phone_number:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "purchase_phone_number": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to purchase_phone_number is blocked until a human approves it. The rest of the server keeps working.

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.

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EXPLORE

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All 566 GoHighLevel MCP Server tools →

Financial tools on other servers

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Go deeper

Critical-risk tools in GoHighLevel MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-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.
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Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

What does the purchase_phone_number tool do? +

Purchase a phone number. It is categorised as a Financial tool in the GoHighLevel MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on purchase_phone_number? +

Register the GoHighLevel MCP Server MCP server in PolicyLayer and add a rule for purchase_phone_number: 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 purchase_phone_number? +

purchase_phone_number is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit purchase_phone_number? +

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

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

purchase_phone_number is provided by the GoHighLevel MCP Server MCP server (busybee3333/go-high-level-mcp-2026-complete). 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.

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// WHAT PURCHASE_PHONE_NUMBER ON GOHIGHLEVEL MCP SERVER DOES

// THE RISK

// HOW TO CONTROL PURCHASE_PHONE_NUMBER

// EXPLORE