// MCP TOOL REFERENCE

lookup_3ds

Step 1 of 3DS2 — submit device-data-collection (DDC) output to Worldpay to determine whether a challenge is required. Returns either a frictionless result or a challenge lookup reference.

ServerMcp Afip
CategoryExecute

How to control lookup_3ds ↓

WHAT IT DOES

What lookup_3ds does on Mcp Afip

AI agents invoke lookup_3ds to trigger actions in Mcp Afip. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

THE RISK

High Risk

Why lookup_3ds needs a policy

This tool submits data to an external payment authentication provider (Worldpay) and triggers a remote operation that influences payment flow. It is not merely reading data; it initiates an authentication challenge lookup step in a payment process. While it doesn't directly move money, it is a critical step in a financial transaction pipeline, and misuse could manipulate authentication outcomes.

From the tool's definition 'submit device-data-collection (DDC) output to Worldpay to determine whether a challenge is required' — triggers an external operation against Worldpay's 3DS2 authentication service

Documented attack patterns abuse exactly the kind of access lookup_3ds gives an agent:

POLICY

How to control lookup_3ds

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 lookup_3ds:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "lookup_3ds": {
      "limits": [
        {
          "counter": "lookup_3ds_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

lookup_3ds stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. 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.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

High-risk tools in Mcp Afip → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about lookup_3ds

What does the lookup_3ds tool do? +

Step 1 of 3DS2 — submit device-data-collection (DDC) output to Worldpay to determine whether a challenge is required. Returns either a frictionless result or a challenge lookup reference. It is categorised as a Execute tool in the Mcp Afip MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on lookup_3ds? +

Register the Mcp Afip MCP server in PolicyLayer and add a rule for lookup_3ds: 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 lookup_3ds? +

lookup_3ds is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit lookup_3ds? +

Yes. Add a rate_limit block to the lookup_3ds 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 lookup_3ds completely? +

Set action: deny in the PolicyLayer policy for lookup_3ds. 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 lookup_3ds? +

lookup_3ds 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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1300 Mcp Afip tools catalogued and risk-classified — across an index of 43,000+ MCP servers.