// MCP TOOL REFERENCE

create_sale_3ds

ServerMcp Ap2
CategoryFinancial

WHAT IT DOES

What create_sale_3ds does on Mcp Ap2

AI agents use create_sale_3ds to commit financial operations through Mcp Ap2 — usually the final step of a payment, billing, or trading workflow. A call moves real money.

THE RISK

Critical Risk

Why create_sale_3ds needs a policy

This tool creates a credit card sale transaction, directly committing a financial charge. It processes real payment card data with 3DS authentication details and posts to a sales endpoint, constituting a financial transaction with immediate monetary consequences. Misuse could result in unauthorized charges to cardholders.

From the tool's definition Create a 3DS-authenticated credit sale (POST /sales)... CreditCard object carries ExternalAuthentication... Use when the merchant already ran Braspag

Documented attack patterns abuse exactly the kind of access create_sale_3ds gives an agent:

POLICY

How to control create_sale_3ds

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for create_sale_3ds:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_sale_3ds": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to create_sale_3ds is blocked until a human approves it. The rest of the server keeps working.

Create a free account and register Mcp Ap2 — nothing to install.
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Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

Related tools and policies

More Mcp Ap2 tools

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All 1300 Mcp Ap2 tools →

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Go deeper

Critical-risk tools in Mcp Ap2 → 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_sale_3ds

What does the create_sale_3ds tool do? +

Create a 3DS-authenticated credit sale (POST /sales). Same endpoint as create_sale but the CreditCard object carries ExternalAuthentication (Cavv, Xid/Eci, Version, ReferenceId) produced by a prior 3DS 2.0 flow. Use when the merchant already ran Braspag. It is categorised as a Financial tool in the Mcp Ap2 MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on create_sale_3ds? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for create_sale_3ds: 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 Ap2. Nothing to install.

What risk level is create_sale_3ds? +

create_sale_3ds 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_sale_3ds? +

Yes. Add a rate_limit block to the create_sale_3ds 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_sale_3ds completely? +

Set action: deny in the PolicyLayer policy for create_sale_3ds. 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_sale_3ds? +

create_sale_3ds is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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