// MCP TOOL REFERENCE

webpay_mall_create_transaction

ServerMcp Afip
CategoryFinancial

How to control webpay_mall_create_transaction ↓

WHAT IT DOES

What webpay_mall_create_transaction does on Mcp Afip

AI agents use webpay_mall_create_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 webpay_mall_create_transaction needs a policy

This tool initiates a financial payment transaction that splits charges across multiple seller commerce codes, directly committing financial obligations. Misuse could result in unauthorized charges across multiple merchants simultaneously, making it critical severity.

From the tool's definition Create a Webpay Mall transaction — one parent buy_order split across several seller commerce codes... Each details entry is a child charge with its own commerce_code, buy_order, and amount.

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

POLICY

How to control webpay_mall_create_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 webpay_mall_create_transaction:

policy.json

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

Any call to webpay_mall_create_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

Related tools and policies

More Mcp Afip tools

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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 webpay_mall_create_transaction

What does the webpay_mall_create_transaction tool do? +

Create a Webpay Mall transaction — one parent buy_order split across several seller commerce codes. Returns { token, url } exactly like Webpay Plus. Each details entry is a child charge with its own commerce_code, buy_order, and amount. 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 webpay_mall_create_transaction? +

Register the Mcp Afip MCP server in PolicyLayer and add a rule for webpay_mall_create_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 webpay_mall_create_transaction? +

webpay_mall_create_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 webpay_mall_create_transaction? +

Yes. Add a rate_limit block to the webpay_mall_create_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 webpay_mall_create_transaction completely? +

Set action: deny in the PolicyLayer policy for webpay_mall_create_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 webpay_mall_create_transaction? +

webpay_mall_create_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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