sigmodx_log_invoice_decision · Sigmodx MCP: Risk & Policy

WHAT IT DOES

What sigmodx_log_invoice_decision does on Sigmodx

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

WHY IT NEEDS A POLICY

Why sigmodx_log_invoice_decision needs a policy

This tool writes/creates audit log entries for invoice approval decisions. While it doesn't directly move money, logging invoice approvals is closely tied to financial workflows and could have significant downstream financial consequences if misused (e.g., falsely logging approvals).

From the tool's definition 'Log an invoice approval decision to Sigmodx' — creates an audit log record for invoice approval decisions

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sigmodx_log_invoice_decision Rate-limited

sigmodx_log_invoice_decision 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": {
    "sigmodx_log_invoice_decision": {
      "limits": [
        {
          "counter": "sigmodx_log_invoice_decision_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 Sigmodx, so you can run agents against it safely.

FAQ

Questions about sigmodx_log_invoice_decision

What does the sigmodx_log_invoice_decision tool do? +

Log an invoice approval decision to Sigmodx for. It is categorised as a Write tool in the Sigmodx MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on sigmodx_log_invoice_decision? +

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

What risk level is sigmodx_log_invoice_decision? +

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

Can I rate-limit sigmodx_log_invoice_decision? +

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

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

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