get_registration_certificate

THE RISK

Low Risk

Why get_registration_certificate needs a policy

This tool retrieves a registration certificate document for a given CUIT (Argentine tax ID). It is a read-only operation that queries and returns data with no side effects, no financial commitments, and no ability to modify or delete records. Despite the financial/payment context of the AP2 server, this specific tool performs document retrieval only.

From the tool's definition Tool name is 'get_registration_certificate' and description states 'Get constancia de inscripción (registration certificate)' — uses 'Get' verb indicating retrieval without modification or deletion.

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

POLICY

How to control get_registration_certificate

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for get_registration_certificate:

policy.json

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

get_registration_certificate 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 Ap2 — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Mcp Ap2 tools

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All 1300 Mcp Ap2 tools →

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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_registration_certificate

What does the get_registration_certificate tool do? +

Get constancia de inscripción (registration certificate) for a CUIT. It is categorised as a Read tool in the Mcp Ap2 MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_registration_certificate? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for get_registration_certificate: 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 Ap2. Nothing to install.

What risk level is get_registration_certificate? +

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

Can I rate-limit get_registration_certificate? +

Yes. Add a rate_limit block to the get_registration_certificate 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_registration_certificate completely? +

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

get_registration_certificate is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Ap2 tool call.

Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →