list_payment_events

THE RISK

Low Risk

Why list_payment_events needs a policy

This tool retrieves historical payment data for reporting and audit purposes. It does not move money, execute commands, modify data, or delete records. While it operates in a financial context (AFIP tax authority, payment events), the action is purely read-only data access.

From the tool's definition Tool name 'list_payment_events' and description 'List recent payment events' indicates a retrieval operation. The phrase 'Useful for transaction reports and reconciliation' confirms read-only, informational use with no data modification or financial movement.

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

POLICY

How to control list_payment_events

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_payment_events:

policy.json

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

list_payment_events 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 list_payment_events

What does the list_payment_events tool do? +

List recent payment events for the configured merchant entity. Useful for transaction reports and reconciliation. 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_payment_events? +

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

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

Can I rate-limit list_payment_events? +

Yes. Add a rate_limit block to the list_payment_events 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_payment_events completely? +

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

list_payment_events 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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