invoices_void_invoice

Void invoice

SERVERGhl SOURCE@aiwerk/mcp-server-ghl

Low RISK CLASS

Category Read

Parameters 31 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aiwerk-mcp-server-ghl/invoices-void-invoice.md

WHAT IT DOES

What invoices_void_invoice does on Ghl

AI agents call invoices_void_invoice to retrieve information from Ghl without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`altId`	string	—	location Id / company Id based on altType Defaults to GHL_LOCATION_ID when omitted.
`altType`	string	—	Alt Type Defaults to GHL_LOCATION_ID when omitted.
`invoiceId`	string	Yes	Invoice Id

Parameters from the server's own tool schema.

RISK

Why invoices_void_invoice is rated Low

Even though invoices_void_invoice only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs invoices_void_invoice safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Ghl, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For invoices_void_invoice, this is the rule to start with:

invoices_void_invoice Allowed

invoices_void_invoice is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "invoices_void_invoice": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ghl, apply this rule, and every invoices_void_invoice call is checked against it from then on.

FAQ

Questions about invoices_void_invoice

What does the invoices_void_invoice tool do? +

Void invoice. It is categorised as a Read tool in the Ghl MCP Server, which means it retrieves data without modifying state.

What parameters does invoices_void_invoice accept? +

invoices_void_invoice accepts 3 parameters: altId, altType, invoiceId. Required: invoiceId. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on invoices_void_invoice? +

Register the Ghl MCP server in PolicyLayer and add a rule for invoices_void_invoice: 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 Ghl. Nothing to install.

What risk level is invoices_void_invoice? +

invoices_void_invoice is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit invoices_void_invoice? +

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

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

invoices_void_invoice is provided by the Ghl MCP server (@aiwerk/mcp-server-ghl). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Ghl, and thousands of servers like it.

This server

All 569 Ghl tools →

Across the catalogue

The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →