list_invoices

List all invoices for the authenticated ${persona}. Use query params to filter by archived status.

SERVERBusinys SOURCE@businys/mcp-server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/app-businys-mcp-server/list-invoices.md

WHAT IT DOES

What list_invoices does on Businys

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

RISK

Why list_invoices is rated Low

This tool queries and retrieves existing invoice records with optional filtering by archived status. It performs no write, delete, or execute operations. The blast radius of misuse is minimal—an attacker gains read-only access to invoices belonging to an authenticated user, which is a confidentiality concern but not integrity or availability threat. Classification as Read is appropriate.

From the tool's definition Tool name 'list_invoices' and description 'List all invoices for the authenticated ${persona}' indicates data retrieval with filtering. No side effects or modifications occur.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_invoices safely

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

list_invoices Allowed

list_invoices 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": {
    "list_invoices": {}
  }
}

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

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

FAQ

Questions about list_invoices

What does the list_invoices tool do? +

List all invoices for the authenticated ${persona}. Use query params to filter by archived status. It is categorised as a Read tool in the Businys MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_invoices? +

Register the Businys 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 Businys. Nothing to install.

What risk level is list_invoices? +

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

Can I rate-limit list_invoices? +

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.

How do I block list_invoices completely? +

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.

What MCP server provides list_invoices? +

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

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