fetch_group_invite_code

THE RISK

Low Risk

Why fetch_group_invite_code needs a policy

This tool retrieves an existing WhatsApp group invite code/link. It does not create, modify, delete, or execute operations—it only queries and returns data. The blast radius of misuse is minimal: an attacker could obtain a group invite code, but this does not grant unauthorized access beyond what the group owner intended to share, nor does it compromise financial, security, or operational systems.

From the tool's definition Tool name 'fetch_group_invite_code' and description 'Fetch the invite code/link for a WhatsApp group' indicate a retrieval operation with no modifications or side effects. 'Fetch' is explicitly a read operation.

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

POLICY

How to control fetch_group_invite_code

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 fetch_group_invite_code:

policy.json

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

fetch_group_invite_code 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.
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FAQ

Questions about fetch_group_invite_code

What does the fetch_group_invite_code tool do? +

Fetch the invite code/link for a WhatsApp group. 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 fetch_group_invite_code? +

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

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

Can I rate-limit fetch_group_invite_code? +

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

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

fetch_group_invite_code 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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