Update the NextPaymentDate on a recurrent payment (PUT /recurrentPayments/{recurrentPaymentId}/NextPaymentDate). Useful to skip a cycle or realign billing dates. Body carries the new date in YYYY-MM-DD.
AI agents use update_recurrent_next_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 modifies the scheduling of recurring financial payments. Altering billing dates can skip payment cycles, delay charges, or cause billing misalignment — all of which have direct financial consequences. It falls squarely in the Financial category as it manipulates payment obligations and timing.
From the tool's definition Update the NextPaymentDate on a recurrent payment... Useful to skip a cycle or realign billing dates
Documented attack patterns abuse exactly the kind of access update_recurrent_next_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 update_recurrent_next_payment:
{
"version": "1",
"default": "deny",
"tools": {
"update_recurrent_next_payment": {
"deny_if": [
{
"conditions": [],
"on_deny": "Requires human approval."
}
]
}
}
} Any call to update_recurrent_next_payment is blocked until a human approves it. The rest of the server keeps working.
Free to start. No card required.
Update the NextPaymentDate on a recurrent payment (PUT /recurrentPayments/{recurrentPaymentId}/NextPaymentDate). Useful to skip a cycle or realign billing dates. Body carries the new date in YYYY-MM-DD. 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 update_recurrent_next_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.
update_recurrent_next_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 update_recurrent_next_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 update_recurrent_next_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.
update_recurrent_next_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.
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