AI agents call get_phone_numbers to retrieve information from GoHighLevel MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves stored phone number data associated with a location within the GoHighLevel CRM. It has no side effects, does not execute code or commands, does not modify or delete data, and does not involve financial transactions. The blast radius of misuse is limited to unauthorized data access (information disclosure), which is typical for Read operations in CRM systems.
From the tool's definition Tool name and description indicate retrieval only: 'Get all phone numbers for a location' — a query operation with no modification, deletion, or execution of commands.
Documented attack patterns abuse exactly the kind of access get_phone_numbers gives an agent:
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 get_phone_numbers:
{
"version": "1",
"default": "deny",
"tools": {
"get_phone_numbers": {}
}
}get_phone_numbers is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get all phone numbers for a location. It is categorised as a Read tool in the GoHighLevel MCP Server MCP Server, which means it retrieves data without modifying state.
Register the GoHighLevel MCP Server MCP server in PolicyLayer and add a rule for get_phone_numbers: 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.
get_phone_numbers is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_phone_numbers 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.
Set action: deny in the PolicyLayer policy for get_phone_numbers. 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.
get_phone_numbers 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.
Deterministic rules across all 566 GoHighLevel MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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566 GoHighLevel MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.