financial_data

THE RISK

Low Risk

Why financial_data needs a policy

Although this tool accesses sensitive financial information that could be exploited (high severity due to sensitive PII and financial data exposure risk), the core function is Read—it queries and retrieves existing data without side effects. It does not create, modify, delete, execute code, or commit financial transactions.

From the tool's definition Tool retrieves 'Credit + financial profile for a CPF/CNPJ — income, score, declared assets, banking, default history' via POST /v1/datasets/persons.

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

POLICY

How to control financial_data

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 financial_data:

policy.json

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

financial_data 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 →

Free to start. No card required.

EXPLORE

Related tools and policies

More Mcp Afip tools

Financial authorize_transaction Authorize a transaction (reserve funds without capturing) via Braintree GraphQL authorizeP Financial cancel_collection Cancel a scheduled collection request Financial cancel_credit Cancel an authorized-but-uncaptured credit payment. Financial cancel_payment Attempt to cancel a payment that has not yet settled. Iniciador endpoint: POST /payments/{ Financial cancel_payment_intent Cancel a payment intent that has not yet been captured. Fails on already-captured intents; Financial cancel_recurrence Cancel an active recurrence. Future charges will stop; already-charged cycles are untouche Financial cancel_subscription Cancel a subscription by ID Financial revoke_token Revoke an issued access_token or refresh_token at POST /v1/token/revoke. Use to terminate

All 1300 Mcp Afip tools →

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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 financial_data

What does the financial_data tool do? +

Credit + financial profile for a CPF/CNPJ — income, score, declared assets, banking, default history. POST /v1/datasets/persons. 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 financial_data? +

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

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

Can I rate-limit financial_data? +

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

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

financial_data 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 →