request_x402_payment

A financial tool on the Pop Pay MCP server.

SERVERPop Pay SOURCE100xpercent/pop-pay-python

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade B, identity unverified Pull the record →

This record as markdown: /tools/100xpercent-pop-pay-python/request-x402-payment.md

WHAT IT DOES

What request_x402_payment does on Pop Pay

AI agents use request_x402_payment to commit financial operations through Pop Pay, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why request_x402_payment is rated Critical

Despite the empty description, the tool name contains 'payment' and it exists on a server whose sole purpose is processing financial transactions for AI agents. The sibling tools (request_virtual_card, request_purchaser_info) further confirm this is a financial flow. Misuse could trigger real monetary transactions, making this Financial/critical. Confidence is slightly reduced due to the empty description.

From the tool's definition Tool name 'request_x402_payment' on a server explicitly described as handling 'financial transactions' and 'payment guardrail'; sibling tools include 'request_virtual_card' and 'request_purchaser_info', confirming financial context.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs request_x402_payment safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Pop Pay, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For request_x402_payment, this is the rule to start with:

request_x402_payment Approval-gated

Any call to request_x402_payment is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "request_x402_payment": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Pop Pay, apply this rule, and every request_x402_payment call is checked against it from then on.

FAQ

Questions about request_x402_payment

What does the request_x402_payment tool do? +

request_x402_payment is a financial tool on the Pop Pay MCP server. It is categorised as a Financial tool in the Pop Pay MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on request_x402_payment? +

Register the Pop Pay MCP server in PolicyLayer and add a rule for request_x402_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 Pop Pay. Nothing to install.

What risk level is request_x402_payment? +

request_x402_payment 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 request_x402_payment? +

Yes. Add a rate_limit block to the request_x402_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.

How do I block request_x402_payment completely? +

Set action: deny in the PolicyLayer policy for request_x402_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.

What MCP server provides request_x402_payment? +

request_x402_payment is provided by the Pop Pay MCP server (100xpercent/pop-pay-python). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Pop Pay, and thousands of servers like it.

This server

All 3 Pop Pay tools → Critical-risk tools on this server →

Across the catalogue

uber_request_ride on MCP Uber Server →x402_call on X402 Buyer →create_payment on Shopmonkey MCP Server →create_contract_payment on AdButler → All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern MCP payment tools →Human-in-the-loop →Tool call approval →