download_boleto_pdf

THE RISK

Low Risk

Why download_boleto_pdf needs a policy

This tool retrieves an already-rendered PDF document of a boleto (payment slip) for viewing or attachment purposes. It performs a read operation with no side effects, reversible actions, code execution, data destruction, or financial transactions. The only capability is fetching and returning data.

From the tool's definition Tool name 'download_boleto_pdf' and description 'Fetch the rendered boleto PDF' indicate retrieval of an existing document. The phrase 'Returns the PDF URL (or base64 bytes)' confirms no data modification occurs.

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

POLICY

How to control download_boleto_pdf

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Afip, and nothing reaches the server without passing your rules. This is the rule we recommend for download_boleto_pdf:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "download_boleto_pdf": {}
  }
}

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

Create a free account and register Mcp Afip — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about download_boleto_pdf

What does the download_boleto_pdf tool do? +

Fetch the rendered boleto PDF for an issued boleto. Returns the PDF URL (or base64 bytes) so it can be attached to an invoice or email. It is categorised as a Read tool in the Mcp Afip MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on download_boleto_pdf? +

Register the Mcp Afip MCP server in PolicyLayer and add a rule for download_boleto_pdf: 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 Afip. Nothing to install.

What risk level is download_boleto_pdf? +

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

Can I rate-limit download_boleto_pdf? +

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

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

download_boleto_pdf is provided by the Mcp Afip MCP server (codespar/mcp-dev-latam). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Afip tool call.

Start from Mcp Afip, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →