create_terminal_session

THE RISK

Critical Risk

Why create_terminal_session needs a policy

This tool initiates a real financial payment transaction — a bank transfer checkout session. It directly facilitates the movement of money from a payer's bank account, placing it firmly in the Financial category with critical severity since misuse could trigger unauthorized payment flows or fraudulent POS transactions.

From the tool's definition Create a Khipu terminal session for in-person / POS bank-transfer checkout... payer scans at the point of sale to pay from their bank app

Documented attack patterns abuse exactly the kind of access create_terminal_session gives an agent:

POLICY

How to control create_terminal_session

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Afip, and nothing reaches the server without passing your rules. This is the rule we recommend for create_terminal_session:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_terminal_session": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to create_terminal_session is blocked until a human approves it. The rest of the server keeps working.

Create a free account and register Mcp Afip — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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Go deeper

Critical-risk tools in Mcp Afip → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Human-in-the-loop → When a tool call should wait for a person — and when policy can decide alone.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

Questions about create_terminal_session

What does the create_terminal_session tool do? +

Create a Khipu terminal session for in-person / POS bank-transfer checkout. Returns a QR/URL the payer scans at the point of sale to pay from their bank app. It is categorised as a Financial tool in the Mcp Afip MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on create_terminal_session? +

Register the Mcp Afip MCP server in PolicyLayer and add a rule for create_terminal_session: 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 Mcp Afip. Nothing to install.

What risk level is create_terminal_session? +

create_terminal_session is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit create_terminal_session? +

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

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

create_terminal_session is provided by the Mcp Afip MCP server (codespar/mcp-dev-latam). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Afip tool call.

Start from Mcp Afip, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →