list_unsubscribe_groups

List all unsubscribe groups on the account via GET /asm/groups. Returns [{id, name, description, is_default, unsubscribes}]. Use the id with list_suppressions / add_suppression.

ServerMcp Afip
CategoryRead

How to control list_unsubscribe_groups ↓

WHAT IT DOES

What list_unsubscribe_groups does on Mcp Afip

AI agents call list_unsubscribe_groups 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.

THE RISK

Low Risk

Why list_unsubscribe_groups needs a policy

This tool retrieves unsubscribe group metadata from the AFIP account without modifying any data. It performs a simple GET request to enumerate existing groups, making it a read operation. The returned data (id, name, description, is_default, unsubscribes counts) are informational only. No data is created, modified, deleted, or financially affected.

From the tool's definition Tool description explicitly states 'List all unsubscribe groups on the account via GET /asm/groups' and 'Returns [{id, name, description, is_default, unsubscribes}]'. The GET method and 'List' verb indicate a read-only retrieval operation with no side effects.

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

POLICY

How to control list_unsubscribe_groups

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_unsubscribe_groups:

policy.json

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

list_unsubscribe_groups 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_unsubscribe_groups

What does the list_unsubscribe_groups tool do? +

List all unsubscribe groups on the account via GET /asm/groups. Returns [{id, name, description, is_default, unsubscribes}]. Use the id with list_suppressions / add_suppression. 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_unsubscribe_groups? +

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

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

Can I rate-limit list_unsubscribe_groups? +

Yes. Add a rate_limit block to the list_unsubscribe_groups 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_unsubscribe_groups completely? +

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

list_unsubscribe_groups 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.

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