Critical Risk →

capture_order

Capture payment for an approved order via POST /v2/checkout/orders/{id}/capture. Use after the buyer approves an order with intent=CAPTURE. Returns the captured payment details.

How to control capture_order ↓

What capture_order does on Mcp Ap2

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

Critical Risk

Why capture_order needs a policy

This tool directly captures (collects) payment from a buyer, committing a financial transaction. Misuse could result in unauthorized charges or double-captures, making it a critical financial risk.

From the tool's definition 'Capture payment for an approved order via POST /v2/checkout/orders/{id}/capture' and 'Returns the captured payment details'

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

How to control capture_order

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 capture_order:

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

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

  1. Create a free account and register Mcp Ap2 — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about capture_order

What does the capture_order tool do? +

Capture payment for an approved order via POST /v2/checkout/orders/{id}/capture. Use after the buyer approves an order with intent=CAPTURE. Returns the captured payment details. 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 capture_order? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for capture_order: 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 capture_order? +

capture_order 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 capture_order? +

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

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

capture_order 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.

Enforce policy on every Mcp Ap2 tool call.

Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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