Low Risk

get_pix_charge_due

Retrieve a due-dated Pix charge (BCB GET /cobv/{txid}).

How to control get_pix_charge_due ↓

What get_pix_charge_due does on Mcp Ap2

AI agents call get_pix_charge_due to retrieve information from Mcp Ap2 without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

Why get_pix_charge_due needs a policy

The tool performs a GET operation to retrieve/read a Pix charge record. It has no side effects — it only fetches existing data. Despite being on a financial MCP server, this specific tool only reads charge information and does not move money or modify any records.

From the tool's definition Retrieve a due-dated Pix charge (BCB GET /cobv/{txid})

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

How to control get_pix_charge_due

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 get_pix_charge_due:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_pix_charge_due": {}
  }
}

get_pix_charge_due is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  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 get_pix_charge_due

What does the get_pix_charge_due tool do? +

Retrieve a due-dated Pix charge (BCB GET /cobv/{txid}). It is categorised as a Read tool in the Mcp Ap2 MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_pix_charge_due? +

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

get_pix_charge_due is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_pix_charge_due? +

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

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

get_pix_charge_due 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.

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