siigo_create_voucher · Siigo MCP Server MCP: Risk & Policy

WHAT IT DOES

What siigo_create_voucher does on Siigo MCP Server

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

WHY IT NEEDS A POLICY

Why siigo_create_voucher needs a policy

This tool creates new financial vouchers/cash receipts in an accounting system, which modifies financial records reversibly. While it involves financial data, it is categorized as Write rather than Financial because the tool creates accounting documentation records rather than directly moving money or committing financial obligations.

From the tool's definition Tool name 'siigo_create_voucher' and description 'Create a new voucher / cash receipt' indicate data creation. Context shows this is a Colombian accounting software managing financial records including payment receipts and cash transactions.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

siigo_create_voucher Rate-limited

siigo_create_voucher 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": {
    "siigo_create_voucher": {
      "limits": [
        {
          "counter": "siigo_create_voucher_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about siigo_create_voucher

What does the siigo_create_voucher tool do? +

Create a new voucher / cash receipt (recibo de caja). Supports DebtPayment, AdvancePayment, and MiscIncome types. It is categorised as a Write tool in the Siigo 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 siigo_create_voucher? +

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

What risk level is siigo_create_voucher? +

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

Can I rate-limit siigo_create_voucher? +

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

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

siigo_create_voucher is provided by the Siigo MCP Server MCP server (jdlar1/siigo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.