list_funding_destinations

THE RISK

Low Risk

Why list_funding_destinations needs a policy

This tool performs a read-only query to retrieve destination details. Although it relates to financial accounts (CLABE is a Mexican banking standard), the tool itself merely retrieves and does not move money, create transactions, or make financial commitments. The blast radius of misuse is limited to information disclosure about funding destinations, not financial harm.

From the tool's definition Tool name 'list_funding_destinations' and description 'Get funding destination details (address/CLABE) for a given currency' indicate a retrieval operation that queries and returns information about funding destinations without modifying data.

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

POLICY

How to control list_funding_destinations

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 list_funding_destinations:

policy.json

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

list_funding_destinations 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.

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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 list_funding_destinations

What does the list_funding_destinations tool do? +

Get funding destination details (address/CLABE) for a given currency. 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 list_funding_destinations? +

Register the Mcp Afip MCP server in PolicyLayer and add a rule for list_funding_destinations: 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 list_funding_destinations? +

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

Can I rate-limit list_funding_destinations? +

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

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

list_funding_destinations 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.

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