Notify Legiti of a payment-method-level event (authorization attempt, capture, refund, void). Distinct from track_sale, which is order-level. Use this when you process payments separately from sale state — e.g. multi-installment captures or refund flows.
AI agents use track_payment to commit financial operations through Mcp Ap2 — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool triggers financial events including authorizations, captures, refunds, and voids — all of which directly affect money movement or financial obligations. Misuse could initiate unauthorized refunds, void legitimate payments, or capture funds incorrectly, making this critical severity.
From the tool's definition payment-method-level event (authorization attempt, capture, refund, void)... multi-installment captures or refund flows
Documented attack patterns abuse exactly the kind of access track_payment gives an agent:
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 track_payment:
{
"version": "1",
"default": "deny",
"tools": {
"track_payment": {
"deny_if": [
{
"conditions": [],
"on_deny": "Requires human approval."
}
]
}
}
}Any call to track_payment is blocked until a human approves it. The rest of the server keeps working.
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Notify Legiti of a payment-method-level event (authorization attempt, capture, refund, void). Distinct from track_sale, which is order-level. Use this when you process payments separately from sale state — e.g. multi-installment captures or refund flows. 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.
Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for track_payment: 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.
track_payment is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the track_payment 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.
Set action: deny in the PolicyLayer policy for track_payment. 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.
track_payment 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.
Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
1300 Mcp Ap2 tools catalogued and risk-classified — across an index of 43,000+ MCP servers.