get_pix_payment

THE RISK

Low Risk

Why get_pix_payment needs a policy

The tool retrieves or queries payment data using a specific identifier (endToEndId). The verb 'Retrieve' and lack of any modification language (create, update, delete, execute) confirm this is a Read operation. While the context involves financial data, the tool itself performs no financial transaction, movement of funds, or commitment—it only fetches existing payment information.

From the tool's definition Tool name 'get_pix_payment' and description 'Retrieve an outbound Pix payment by endToEndId' indicate a retrieval operation with no modifications.

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

POLICY

How to control get_pix_payment

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 get_pix_payment:

policy.json

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

get_pix_payment 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

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

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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 get_pix_payment

What does the get_pix_payment tool do? +

Retrieve an outbound Pix payment by endToEndId. 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 get_pix_payment? +

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

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

Can I rate-limit get_pix_payment? +

Yes. Add a rate_limit block to the get_pix_payment 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_payment completely? +

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

get_pix_payment 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 →