open_invoice · Eduframe MCP: Risk & Policy

WHAT IT DOES

What open_invoice does on Eduframe

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

WHY IT NEEDS A POLICY

Why open_invoice needs a policy

The tool modifies invoice state irreversibly from 'concept' to 'open' and assigns an invoice number, which is a write operation that affects financial records. While it doesn't delete data or move money directly, it commits an invoice to active status with permanent state changes.

From the tool's definition Tool description states it 'Changes the state from concept to open' and 'will assign the actual invoice number'. This modifies invoice records, transitioning them to an active billing state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

open_invoice Rate-limited

open_invoice 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": {
    "open_invoice": {
      "limits": [
        {
          "counter": "open_invoice_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 Eduframe, so you can run agents against it safely.

FAQ

Questions about open_invoice

What does the open_invoice tool do? +

Changes the state from concept to open.\nThis will assign the actual invoice number so it. It is categorised as a Write tool in the Eduframe MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on open_invoice? +

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

What risk level is open_invoice? +

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

Can I rate-limit open_invoice? +

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

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

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