generate_tax_declaration · FacturaHub MCP Server MCP

WHAT IT DOES

What generate_tax_declaration does on FacturaHub MCP Server

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

WHY IT NEEDS A POLICY

Why generate_tax_declaration needs a policy

This tool creates a new tax declaration document which represents a reversible write operation—the declaration can be modified or re-generated if errors are discovered before final submission. However, the high severity reflects that tax declarations are critical business documents with legal and financial implications. Misuse could lead to incorrect tax filings, penalties, or regulatory issues.

From the tool's definition Tool generates a tax declaration document for a period, creating a formal government filing artifact. Description explicitly states it supports tax declaration generation across multiple countries' tax systems (BTW, Modelo 303, ITBMS, IVA, etc.).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_tax_declaration Rate-limited

generate_tax_declaration 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": {
    "generate_tax_declaration": {
      "limits": [
        {
          "counter": "generate_tax_declaration_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 FacturaHub MCP Server, so you can run agents against it safely.

FAQ

Questions about generate_tax_declaration

What does the generate_tax_declaration tool do? +

[FacturaHub] Generate a tax declaration for a period. Supported countries: NL (BTW quarterly), ES (Modelo 303 quarterly), PA (ITBMS bimonthly), MX (IVA monthly), CO (IVA bimonthly). It is categorised as a Write tool in the FacturaHub 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 generate_tax_declaration? +

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

What risk level is generate_tax_declaration? +

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

Can I rate-limit generate_tax_declaration? +

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

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

generate_tax_declaration is provided by the FacturaHub MCP Server MCP server (santy1422/facturahub-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.