send_interactive_flow

THE RISK

Medium Risk

Why send_interactive_flow needs a policy

Sending interactive WhatsApp messages is a write operation—it creates new message records and modifies communication state. It is not a read operation (no data retrieval), not execute (no arbitrary code/command execution beyond message dispatch), not destructive (messages can be retracted or communication can be discontinued), and not financial (no direct monetary transactions).

From the tool's definition Tool name 'send_interactive_flow' and description indicate it sends WhatsApp Flow messages, which creates/modifies communication state by dispatching messages to recipients.

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

POLICY

How to control send_interactive_flow

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 send_interactive_flow:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "send_interactive_flow": {
      "limits": [
        {
          "counter": "send_interactive_flow_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

send_interactive_flow stays usable, but capped — an agent stuck in a loop can't make hundreds of changes 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.

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EXPLORE

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Write tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about send_interactive_flow

What does the send_interactive_flow tool do? +

Send a WhatsApp Flow message. Flows are Meta. It is categorised as a Write tool in the Mcp Afip MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on send_interactive_flow? +

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

send_interactive_flow is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit send_interactive_flow? +

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

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

send_interactive_flow 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.

CHECK YOUR STACK →