AI agents call list_invoices 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 and displays invoice data without creating, modifying, deleting, or executing any operations. It is a straightforward read operation that queries existing invoices. The low severity reflects that listing invoices poses minimal risk even if accessed by an unauthorized agent, as it only exposes financial information without enabling transactions or modifications.
From the tool's definition Tool name is 'list_invoices' with description 'List all invoices' - the verb 'list' indicates a retrieval/query operation with no modification of data.
Documented attack patterns abuse exactly the kind of access list_invoices 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 list_invoices:
{
"version": "1",
"default": "deny",
"tools": {
"list_invoices": {}
}
}list_invoices is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all invoices. 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 list_invoices: 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.
list_invoices 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 list_invoices 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 list_invoices. 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.
list_invoices is provided by the GoHighLevel MCP Server MCP server (mastanley13/gohighlevel-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 255 GoHighLevel MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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255 GoHighLevel MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.