Create a static Pix charge (reusable QR code tied to a merchant Pix key). Returns EMV copy-paste payload and QR code image. Use for points-of-sale or donations where the same QR is shown to many payers.
AI agents use create_pix_charge_static 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 moves money or commits financial obligations by creating payment charges. Even though it generates a static QR code (reusable), the core function is to establish a financial instrument that collects payments from payers. Misuse by an AI agent could lead to unauthorized payment collection, fraud, or redirection of funds.
From the tool's definition Tool creates a Pix charge, which is a financial transaction mechanism. Description explicitly states it creates a 'charge' and 'QR code' for payment collection. Pix is Brazil's instant payment system. The tool enables merchants to accept money directly.
Documented attack patterns abuse exactly the kind of access create_pix_charge_static 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 create_pix_charge_static:
{
"version": "1",
"default": "deny",
"tools": {
"create_pix_charge_static": {
"deny_if": [
{
"conditions": [],
"on_deny": "Requires human approval."
}
]
}
}
}Any call to create_pix_charge_static is blocked until a human approves it. The rest of the server keeps working.
Free to start. No card required.
Create a static Pix charge (reusable QR code tied to a merchant Pix key). Returns EMV copy-paste payload and QR code image. Use for points-of-sale or donations where the same QR is shown to many payers. 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 create_pix_charge_static: 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.
create_pix_charge_static 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 create_pix_charge_static 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 create_pix_charge_static. 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.
create_pix_charge_static 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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