add_invoice_line · Dolibarr MCP Server MCP: Risk & Policy

WHAT IT DOES

What add_invoice_line does on Dolibarr MCP Server

AI agents use add_invoice_line to create or update resources in Dolibarr MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Dolibarr MCP Server environment.

WHY IT NEEDS A POLICY

Why add_invoice_line needs a policy

This tool creates or modifies invoice data by adding a line item. While invoices have financial implications, the tool itself does not move money or commit financial obligations—it only modifies invoice structure. This is a Write operation (create/modify data reversibly).

From the tool's definition Tool name 'add_invoice_line' and description 'Add line to invoice' indicate creation of a new line item within an invoice, which modifies invoice data reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_invoice_line Rate-limited

add_invoice_line stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "add_invoice_line": {
      "limits": [
        {
          "counter": "add_invoice_line_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Dolibarr MCP Server, so you can run agents against it safely.

FAQ

Questions about add_invoice_line

What does the add_invoice_line tool do? +

Add line to invoice. It is categorised as a Write tool in the Dolibarr MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_invoice_line? +

Register the Dolibarr MCP Server MCP server in PolicyLayer and add a rule for add_invoice_line: 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 Dolibarr MCP Server. Nothing to install.

What risk level is add_invoice_line? +

add_invoice_line is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit add_invoice_line? +

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

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

add_invoice_line is provided by the Dolibarr MCP Server MCP server (marioser/dolibarr-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.