send_image

THE RISK

Medium Risk

Why send_image needs a policy

This tool performs a Write operation—it creates and sends a message, which is reversible (messages can be deleted or unsent on WhatsApp). It does not read data, execute code, destroy data, or move money. The medium severity reflects potential misuse such as sending unsolicited messages, sensitive documents, or spam, but the impact is limited compared to financial or destructive operations.

From the tool's definition Tool description explicitly states 'Send an image message via WhatsApp', which creates and transmits data (an image message) to a third party via WhatsApp platform.

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

POLICY

How to control send_image

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_image:

policy.json

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

send_image 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.

LIMIT THIS TOOL →

Free to start. No card required.

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_image

What does the send_image tool do? +

Send an image message via WhatsApp. 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_image? +

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

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

Can I rate-limit send_image? +

Yes. Add a rate_limit block to the send_image 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_image completely? +

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

send_image 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 →