AI agents call get_refund to retrieve information from Mcp Afip without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries existing refund information without modifying, deleting, or creating any data. It has no side effects and does not execute external operations or move money. While it relates to financial data in an AFIP (Argentine tax authority) context, the tool itself only performs a lookup/read operation, not a financial transaction. Therefore, it is classified as Read with low severity.
From the tool's definition Tool name 'get_refund' and description 'Get refund details by ID' indicate a retrieval operation. The verb 'Get' and the pattern of querying by ID are characteristic of read-only data access.
Documented attack patterns abuse exactly the kind of access get_refund gives an agent:
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_refund:
{
"version": "1",
"default": "deny",
"tools": {
"get_refund": {}
}
} get_refund is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get refund details by ID. It is categorised as a Read tool in the Mcp Afip MCP Server, which means it retrieves data without modifying state.
Register the Mcp Afip MCP server in PolicyLayer and add a rule for get_refund: 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.
get_refund is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_refund 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.
Set action: deny in the PolicyLayer policy for get_refund. 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.
get_refund 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.
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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1300 Mcp Afip tools catalogued and risk-classified — across an index of 43,000+ MCP servers.