// MCP TOOL REFERENCE

create_bank_transaction

Create a bank transaction (SPEND = money out, RECEIVE = money in) directly on a bank account — for transactions without a matching invoice/bill (fees, transfers, one-off expenses).

ServerMcp Afip
CategoryFinancial

How to control create_bank_transaction ↓

WHAT IT DOES

What create_bank_transaction does on Mcp Afip

AI agents use create_bank_transaction to commit financial operations through Mcp Afip — usually the final step of a payment, billing, or trading workflow. A call moves real money.

THE RISK

Critical Risk

Why create_bank_transaction needs a policy

This tool directly moves money in or out of a bank account. SPEND means money leaving the account, RECEIVE means money entering — both are financial transactions with real monetary consequences. Misuse could result in unauthorized fund movements, making this Financial/critical severity.

From the tool's definition Create a bank transaction (SPEND = money out, RECEIVE = money in) directly on a bank account

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

POLICY

How to control create_bank_transaction

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_bank_transaction:

policy.json

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

Any call to create_bank_transaction 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_bank_transaction

What does the create_bank_transaction tool do? +

Create a bank transaction (SPEND = money out, RECEIVE = money in) directly on a bank account — for transactions without a matching invoice/bill (fees, transfers, one-off expenses). 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_bank_transaction? +

Register the Mcp Afip MCP server in PolicyLayer and add a rule for create_bank_transaction: 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_bank_transaction? +

create_bank_transaction 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_bank_transaction? +

Yes. Add a rate_limit block to the create_bank_transaction 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_bank_transaction completely? +

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

create_bank_transaction 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.

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1300 Mcp Afip tools catalogued and risk-classified — across an index of 43,000+ MCP servers.